 |
A CASE STUDY IN RISK MANAGEMENT ISSUES: PERCHLORATE IN POTABLE WATER |
|
Risk management brings together many issues. While some of these are scientific in nature, many come down to policy and even emotion. As a result, striking a balance among competin...
|
|
|
A MIXTURE OF AMMONIUM PERCHLORATE AND SODIUM CHLORATE ENHANCES ALTERATIONS OF THE PITUITARY-THYROID AXIS CAUSED BY THE INDIVIDUAL CHEMICALS IN ADULT MALE F344 RATS |
|
Ammonium perchlorate (AP) and sodium chlorate (SC) have been detected in public drinking water supplies in many parts of the U.S. These chemicals cause perturbations in pituitary-t...
|
|
|
A SIMPLE MODEL FOR THE UPTAKE, TRANSLOCATION, AND ACCUMULATION OF PERCHLORATE IN TOBACCO PLANTS |
|
A simple mathematical model is being developed to describe the uptake, translocation, and accumulation of perchlorate in tobacco plants. The model defines a plant as a set of comp...
|
|
|
A STUDY ON THE ACCUMULATION OF PERCHLORATE IN YOUNG HEAD LETTUCE |
|
The overall objective of this study was to demonstrate in a greenhouse study the potential for incorporation of perchlorate from aqueous solutions of 10, 50, 100, 500, 1,000, 5,000...
|
|
|
A Simple Paper Describing the Analysis of Lake Water for Perchlorate and Responses to the Paper in Newspapers and Internet Websites. |
|
Analysis of Lake Water for Perchlorate and Responses....
|
|
|
ABILITY OF THE MALE RAT PUBERTAL ASSAY TO DETECT ENVIRONMENTAL CHEMICALS THAT ALTER THYROID HORMONE HOMEOSTASIS |
|
ABILITY OF THE MALE RAT PUBERTAL ASSAY TO DETECT ENVIRONMENTAL CHEMICALS THAT ALTER THYROID HORMONE HOMEOSTASIS
Stoker, Tammy E.1; Laws, Susan C.1; Ferrell, Janet M.1; Coope...
|
|
|
ACCUMULATION AND FATE OF PERCHLORATE IN PLANTS |
|
Perchlorate, a component of solid rocket fuels, has emerged as a potential threat to surface water and groundwater at several locations in the U.S. Perchlorate levels up to 16 ug/L...
|
|
|
ACCUMULATION OF PERCHLORATE IN TOBACCO PLANTS AND TOBACCO PRODUCTS |
|
Previous field and laboratory studies with vascular plants have shown that perchlorate is transported from perchlorate fortified soils and is accumulated in the plant tissues and o...
|
|
|
ACCUMULATION OF PERCHLORATE IN TOBACCO PLANTS: DEVELOPMENT OF A PLANT KINETIC MODEL |
|
Previous studies have shown that tobacco plants are tolerant of perchlorate and will accumulate perchlorate in plant tissues. This research determined the uptake, translocation, a...
|
|
|
ADSORPTION CHARACTERISTICS OF PERCHLORATE IN SOILS |
|
Perchlorate(CI04) is an oxyanion that originates as a contaminant in ground and surface waters from the dissolution of ammonium, potassium, magnesium or sodium salts. Perchlorate i...
|
|
|
ADVANCED REMOTE SENSING MONITORING OF MINE WASTE |
|
The OEI-EAD and NERL-ESD have been cooperating on development of monitoring technologies and research to better use remote sensor-derived information and to ultimately disseminate ...
|
|
|
ALTERNATIVE TECHNIQUES FOR MEASUREMENT OF PERCHLORATE IN FERTILIZER AND ENVIRONMENTAL SAMPLES |
|
The Perchlorate anion has been implicated as a potentially serious environmental pollutant, being found in drinking water and irrigated crops. Commercial fertilizers have recently ...
|
|
|
AN ADDITIVE EFFECT OF A MIXTURE OF AMMONIUM PERCHLORATE AND SODIUM CHLORATE ON PITUTARY-THYROID AXIS IN MALE F-344 RATS |
|
An Additive Effect of a Mixture of Ammonium Perchlorate
and Sodium Chlorate on Pitutary-Thyroid Axis in Male F-344 Rats
Moazzam A. Khan 1,2,, 3Suzanne E. Fenton. 2Adam ...
|
|
|
ANALYSIS OF HYDROPONIC FERTILIZER MATRIXES FOR PERCHLORATE: COMPARISON OF ANALYTICAL TECHNIQUES |
|
Seven retail hydroponic nitrate fertilizer products, two liquid and five solid, were comparatively analyzed for the perchlorate anion (ClO4-) by ion chromatography (IC) with suppre...
|
|
|
APPLICATION OF VASCULAR PLANTS FOR BIOREMEDIATION OF PERCHLORATE: UNRAVELING THE MYSTERIES |
|
There is no abstract available for this product. If further information is requested, please refer to the bibliographic citation and contact the person listed under Contact field....
|
|
|
ASSESSMENT OF NUTRIENTS AND SELECTED ORGANIC CONTAMINANTS IN SMALL STREAMS IN THE MIDWESTERN UNITED STATES, 2004 |
|
The U. S. Geological Survey (USGS), in cooperation with the U. S. Environmental Protection Agency (US EPA), collected water samples from 120 small streams (watersheds less than 200...
|
|
|
BIOLOGICAL PERCHLORATE REDUCTION IN A MEMBRANE IMMOBILIZED BIOFILM REACTOR. (R827622E03) |
|
The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoi...
|
|
|
BIOLOGICAL REDUCTION OF PERCHLORATE IN ION-EXCHANGE REGENERANT SOLUTIONS CONTAINING HIGH SALINITY AND HIGH AMMONIUM LEVELS. (R827622E03) |
|
The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoi...
|
|
|
COMBINING ION-EXCHANGE (IX) TECHNOLOGY AND BIOLOGICAL REDUCTION FOR PERCHLORATE REMOVAL. (R827622E03) |
|
The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoi...
|
|
|
COMMENT ON "PERCHLORATE IDENTIFICATION IN FERTILIZERS" AND THE SUBSEQUENT ADDITION/CORRECTION [LETTER TO EDITOR] |
|
Perchlorate contamination has been reported in several fertilizer materials and not just in mined Chile saltpeter, where it is a welo-known natural impurity. To survey fertilizers ...
|
|
|
COMPARISON AND EVALUATION OF LABORATORY PERFORMANCE ON A METHOD FOR THE DETERMINATION OF PERCHLORATE IN FERTILIZERS |
|
This report details the interlaboratory validation of a method for the determination of perchlorate in fertilizers. In this method (EPA/600/R-01/026), a solid sample of fertilizer ...
|
|
|
DEIODINASE TYPE I, II, AND III EXPRESSION IN AMPHIBIAN PITUITARY, THYROID, AND LIMB BUD AT KEY STAGES OF DEVELOPMENT AND AFTER EXPOSURE TO THE THYROID HORMONE SYNTHESIS MODULATORS: METHIMAZOLE, PERCHLORATE AND PROPYLTHIOURACIL |
|
This product describes molecular aspects of a multi-endpoint screening assay being developed by EPA in response to EDSTAC recommendations to examine potential interference with the...
|
|
|
DETERMINATION OF DRINKING WATER CONTAMINANTS BY ELECTROSPRAY MASS SPECTROMETRY OF STABLE ASSOCIATION COMPLEXES |
|
Two areas of focus in US EPA research for safe drinking water are disinfection by-product (DBPs) and Contaminant Candidate List (CCL) Compounds. DBPs are created during disinfecti...
|
|
|
DETERMINATION OF PERCHLORATE AT PARTS-PER-BILLION LEVELS IN PLANTS BY ION CHROMATOGRAPHY |
|
A method for the analysis of perchlorate in plants was developed, based on dry weight, and applied to the analysis of plant organs, foodstuffs, and plant products. The method reduc...
|
|
|
DETERMINATION OF PERCHLORATE AT PARTS-PER-BILLION LEVELS IN PLANTS BY ION CHROMATOGRAPHY |
|
A standardized method for the analysis of perchlorate in plants was developed, based on dry weight, and applied to the analysis of plant organs, foodstuffs, and plant products. The...
|
|
|
DETERMINATION OF PERCHLORATE AT TRACE LEVELS IN DRINKING WATER BY ION-PAIR EXTRACTION WITH ELECTROSPRAY IONIZATION MASS SPECTROMETRY. |
|
Perchlorate has been added to the U.S. Environmental Protection Agency,s Drinking Water Contaminant Candidate List (CCL). The present work describes the analysis of perchlorate in...
|
|
|
DETERMINATION OF PERCHLORATE BY ION CHROMATOGRAPHY, SUPPRESSED CONDUCTIVITY AND MASS SPECTROMETRIC DETECTION USING AN OXYGEN-18 ENRICHED ISOTROPIC INTERNAL STANDARD |
|
Perchlorate (ClO4 -) is a drinking water contaminant originating from the dissolution of the salts of ammonium, potassium, magnesium, or sodium in water. It is used primarily as...
|
|
|
DETERMINATION OF PERCHLORATE IN SOME FERTILIZERS AND PLANT TISSUE BY RAMAN SPECTROSCOPY |
|
We have successfully used Raman spectroscopy for the direct qualitative and quantitative analysis of perchlorate in fertilizer extracts without the need for chromatographic separat...
|
|
|
DETERMINATION OF PERCHLORATE IN TOBACCO PLANTS AND TOBACCO PRODUCTS |
|
Previous field and laboratory studies with vascular plants have shown that perchlorate is transported from perchlorate fortified soils and is accumulated in the plant tissues and o...
|
|
|
DEVELOPING ANALYTICAL METHODS FOR GATHERING NATIONWIDE OCCURRENCE DATA FOR CHEMICALS ON THE DRINKING WATER CONTAMINANT CANDIDATE LIST (CCL) |
|
Amendments to the Safe Drinking Water Act (SDWA) require the United States Environmental Protection Agency (USEPA) to publish a list of contaminants that are known or anticipated t...
|
|
|
DEVELOPMENT AND VALIDATION OF AN ION CHROMATOGRAPHIC METHOD FOR DETERMINING PERCHLORATE IN FERTILIZERS |
|
A method has been developed for the determination of perchlorate in fertilizers. Materials are leached with deionized water to dissolve any soluble perchlorate compounds. Ion chrom...
|
|
|
DEVELOPMENT OF A BETTER METHOD TO IDENTIFY AND MEASURE PERCHLORATE IN DRINKING WATER |
|
Perchlorate (ClO4 -) is an oxidant used primarily in solid propellant for rockets, missiles, pyrotechnics, as a component in air bag inflators, and in highway safety flares. Perch...
|
|
|
DEVELOPMENT OF AN AMPHIBIAN METAMORPHOSIS MODEL FOR DETECTING THYROID AXIS DISRUPTION |
|
Metamorphosis in Xenopus laevis represents an elaborate process of post-embryonic development which is thyroid hormone (TH) dependent. The development of a functional thyroid axis ...
|
|
|
DEVELOPMENT OF AN ELECTROSPRAY MASS SPECTROMETRIC METHOD FOR DETERMINING PERCHLORATE IN FERTILIZERS |
|
An electrospray mass spectrometric method has been developed for application to agricultural and horticultural fertilizers to determine perchlorate. After fertilizers are leached o...
|
|
|
DISINFECTION BY-PRODUCTS AND OTHER EMERGING CONTAMINANTS IN DRINKING WATER |
|
Although drinking water disinfection by-products (DBPs) have been studied for the last 30 years, significant, new concerns have arisen. These concerns include adverse reproductive...
|
|
|
DISTRIBUTION OF PERCHLORATE IN SAMPLES OF SODIUM NITRATE (CHILE SALTPETER) FERTILIZER DERIVED FROM NATURAL CALICHE |
|
Two lots of sodium nitrate fertilizer derived from Chilean caliche were analyzed to determine the distribution of perchlorate throughout the material. Although our samples represen...
|
|
|
DISTRIBUTION SYSTEM AND WATER QUALITY IMPACTS OF PERCHLORATE REMOVAL TECHNOLOGIES |
|
This paper will discuss the characteristics of perchlorate and the resulting treatment processes that hold promise for current or near-term use: ion exchange, anaerobic biological ...
|
|
|
Developmental exposure to perchlorate alters synaptic transmission in hippocampus of the adult rat. |
|
The Food Quality Protection Act and Safe Drinking Water Act mandate the EPA to identify potential health risks associated with chemicals that act on the endocrine system. Perchlora...
|
|
|
EFFECTS OF LOW DOSE MIXTURES OF PCB126 AND PERCHLORATE ON THE HYPTHALAMIC-PITUITARY-THYROID (HPT) AXIS IN THE MALE RAT. |
|
Perchlorate (ClO4) and 3,3',4,4',5-pentachlorobiphenyl (PCB126) are environmental contaminants known to disturb thyroid hormone homeostasis by well defined modes of action that lea...
|
|
|
ELECTROSPRAY MASS SPECTROMETRY OF STABLE ASSOCIATION COMPLEXES FOR THE DETERMINATION OF DRINKING WATER CONTAMINANTS |
|
Two areas of focus in US EPA research for safe drinking water are disinfection by-products (DBPs) and Contaminant Candidate List (CCL) Compounds. DBPs are created during disinfect...
|
|
|
EMERGING CONTAMINANTS IN THE ENVIRONMENT |
|
Much has been achieved in the way of environmental protection over the last 30 years. However, as we learn more, new concerns arise. This presentation will discuss chemical and mi...
|
|
|
EMERGING CONTAMINANTS IN WATER AND CURRENT HEALTH ISSUES |
|
This presentation presents emerging contaminants in water and potential health effects. Contaminants talked about include the following: DBPs; PFOA; pharmaceuticals; pesticide degr...
|
|
|
EMERGING CONTAMINANTS: WHAT ARE THE CURRENT HOT ENVIRONMENTAL POLLUTANTS AND WHAT IS NEXT? |
|
Much has been achieved in the way of environmental protection over the last 30 years. Laws have been passed that have improved the quality of our rivers and streams, the quality o...
|
|
|
EMERGING ENVIRONMENTAL CONTAMINANTS AND CURRENT ISSUES, MEETING IN SEATTLE, WA |
|
Much has been achieved in the way of environmental protection over the last 30 years. However, as we learn more, new concerns arise. This presentation will discuss chemical and mi...
|
|
|
EMERGING ENVIRONMENTAL CONTAMINANTS: ACHIEVEMENTS AND CHALLENGES WITH MASS SPECTROMETRY |
|
Much has been achieved in the way of environmental protection over the last 30 years. However, as we learn more, new concerns arise. This presentation will discuss emerging contami...
|
|
|
ENUMERATION, CHARACTERIZATION, AND IDENTIFICATION OF PERCHLORATE-REDUCING BACTERIA ISOLATED FROM CONTAMINATED SITES IN LAS VEGAS, NEVADA. (R827622E03) |
|
The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoi...
|
|
|
ENVIRONMENTAL CHEMISTRY: EMERGING CONTAMINANTS AND CURRENT ISSUES |
|
Much has been achieved in the way of environmental protection over the last 30 years. However, as we learn more, new concerns arise. This presentation will discuss chemical and mi...
|
|
|
ENVIRONMENTAL MASS SPECTROMETRY: EMERGING CONTAMINANTS AND CURRENT ISSUES |
|
Much has been achieved in the way of environmental protection over the last 30 years. However, as we learn more, new concerns arise. This presentation will discuss chemical and mi...
|
|
|
EVALUATION OF AMMONIUM PERCHLORATE IN THE ENDOCRINE DISRUPTOR SCREENING AND TESTING PROGRAM'S MALE PUBERTAL PROTOCOL: ABILITY TO DETECT EFFECTS OF THYROID ENDPOINTS. |
|
The U.S EPA Endocrine Disruptor Screening Program Tier 1 male pubertal protocol was designed to detect reproductive development and thyroid function. One purpose of this in vivo pr...
|
|
|
EXAMPLES OF THE ROLE OF ANALYTICAL CHEMISTRY IN ENVIRONMENTAL RISK MANAGEMENT RESEARCH |
|
Analytical chemistry is an important tier of environmental protection and has been traditionally linked to compliance and/or exposure monitoring activities for environmental contam...
|
|
|
GENE EXPRESSION OF THE AMPHIBIAN HPT-AXIS IN NORMAL DEVELOPMENT AND AFTER EXPOSURE TO THE MODULATORS METHIMAZOLE, PERCHLORATE, AND PROPYLTHIOURACIL |
|
This product describes molecular aspects of a multi-endpoint screening assay being developed by EPA in response to EDSTAC recommendations to examine potential interference with the...
|
|
|
HARMONIZED HEALTH RISK ASSESSMENT FOR PERCHLORATE BASED ON MAPPING ITS MODE OF ACTION |
|
There is no abstract available for this product. If further information is requested, please refer to the bibliographic citation and contact the person listed under Contact field....
|
|
|
IDENTIFICATION OF GENE EXPRESSION BIOMARKERS THAT RAPIDLY DETECT EXPOSURE TO THYROID HORMONES, METHIMAZOLE, PROPYLTHIOURACIL AND PERCHLORATE IN A XENOPUS LAEVIS METAMORPHOSIS SCREENING ASSAY. PART II: EFFECTS ON THE TAIL AND HINDLIMB |
|
Using a combination of cDNA array and real time quantitative polymerase chain reaction analyses, this study identifies molecular markers in tissues peripheral to the central thyroi...
|
|
|
INVESTIGATION OF AGRICULTURAL FERTILIZERS AND RELATED MATERIALS FOR PERCHLORATE |
|
The most comprehensive survey of fertilizers and other raw materials for perchlorate to date has been conducted to determine whether these could be significant contributors to envi...
|
|
|
ION CHROMATOGRAPHIC DETERMINATION OF PERCHLORATE ION: ANALYSIS OF FERTILIZERS AND RELATED MATERIALS |
|
A solid fertilizer sample is dissolved or leached to solutilize the perchlorate as the aqueous anion. If needed, the liquid is filtered or centrifuged. The rsulting solution is sub...
|
|
|
ION CHROMATOGRAPHIC DETERMINATION OF PERCHLORATE ION: ANALYSIS OF FERTILIZERS AND RELATED MATERIALS (EPA/600/R-01/026) |
|
A solid fertilizer sample is dissolved or leached to solubilize the perchlorate as the aqueous anion. If needed, the liquid is filtered or centrifuged. The resulting solution is su...
|
|
|
ISSUES IN MANAGING THE RISKS ASSOCIATED WITH PERCHLORATE IN DRINKING WATER |
|
Perchlorate (ClO4-) contamination of ground and surface waters has placed drinking water supplies at risk in communities throughout the US, especially in the ...
|
|
|
KINETICS OF PERCHLORATE REDUCTION BY NANOSCALE IRON PARTICLES. (R829625) |
|
The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoi...
|
|
|
LANDSCAPE INDICATORS FOR PESTICIDES, NUTRIENTS, EMERGING CONTAMINANTS, AND AQUATIC BIOLOGY IN MIDWESTERN CORN BELT STREAMS |
|
This study is part of a long-term cooperative national research project among the US EPA and the USGS to collect comparable water-quality data from small streams and to develop reg...
|
|
|
LOW-DOSE EFFECTS OF AMMONIUM PERCHLORATE ON THE HYPOTHALAMIC-PITUITARY-THYROID (HPT) AXIS OF ADULT MALE RATS PRETREATED WITH PCB126 |
|
The objective of this research was to characterize the disturbances in the hypothalamic-pituitary-thyroid (HPT) axis resulting from exposure to a binary mixture, 3,3',4',5-pentachl...
|
|
|
LOW-LEVEL DETERMINATION OF PERCHLORATE IN DRINKING WATER USING ION CHROMATOGRAPHY MASS SPECTROMETRY |
|
Perchlorate is a drinking water contaminant originating from the dissolution of the salts of ammonium, potassium, magnesium, or sodium in water. It is used primarily as an oxidant...
|
|
|
MARGINAL IODINE DEFICIENCY EXACERBATES PERCHLORATE THYROID TOXICITY. |
|
The environmental contaminant perchlorate disrupts thyroid homeostasis via inhibition of iodine uptake into the thyroid. This work tested whether iodine deficiency exacerbates the ...
|
|
|
MASS SPECTROMETRY OF DRINKING WATER CONTAMINANTS: DISINFECTION BY-PRODUCTS AND THE US EPA CONTAMINANT CANDIDATE LIST COMPOUNDS |
|
Disinfection by-products (DBPs) are the thousands of compounds created during the disinfection of drinking water. These compounds can create potential health risks, challenge drin...
|
|
|
MEASUREMENT OF PERCHLORATE IN WATER BY USE OF AN 18O-ENRICHED ISOTOPIC STANDARD AND ION CHROMATOGRAPHY WITH MASS SPECTROMETRIC DETECTION |
|
Perchlorate (ClO4-) is a drinking water contaminant originating from the dissolution of the salts of ammonium, potassium, magnesium, or sodium in water. It i...
|
|
|
MEASUREMENT OF PERCHLORATE IN WATER USING AN OXYGEN-18 ENRICHED ISOTOPE STANDARD AND ION CHROMATOGRAPHY MASS SPECTROMETRIC DETECTION |
|
Perchlorate (ClO4 -) is a drinking water contaminant originating from the dissolution of the salts of ammonium, potassium, magnesium, or sodium in water. It is used primarily as...
|
|
|
METAMORPHIC INHIBITION OF XENOPUS LAEVIS BY SODIUM PERCHLORATE: EFFECTS ON DEVELOPMENT AND THYROID HISTOLOGY |
|
The perchlorate anion inhibits thyroid hormone (TH) synthesis via inhibition of the sodium-iodide symporter. It is, therefore, a good model chemical to aid in the development of a ...
|
|
|
METHOD 332.0: DETERMINATION OF PERCHLORATE IN DRINKING WATER BY ION CHROMATOGRAPHY WITH SUPPRESSED CONDUCTIVITY AND ELECTROSPRAY IONIZATION MASS SPECTROMETRY |
|
This method is applicable to the identification and quantitation of perchlorate in raw and finished drinking waters. The approach used is ion chromatography with suppressed conduc...
|
|
|
METHOD FOR THE DETERMINATION OF PERCHLORATE ANION IN PLANT AND SOLID MATRICES BY ION CHROMATOGRAPHY |
|
A standardized method for the analysis of perchlorate in plants was developed, based on dry weight, and applied to the analysis of plant organs, foodstuffs, and plant products. Th...
|
|
|
METHODS DEVELOPMENT TO IMPROVE LOW-LEVEL PERCHLORATE DETECTION IN DRINKING WATER BY CONDUCTIVITY AND MASS SPECTROMETRY - ISSUES AND IMPACT |
|
The goal of this research is to develop a USEPA method for the determination of sub-ppb concentrations of the perchlorate anion in ground and surface drinking waters. To date, ion...
|
|
|
MICROSCALE EXTRACTION OF PERCHLORATE IN DRINKING WATER WITH LOW LEVEL DETECTION BY ELECTROSPRAY-MASS SPECTROMETRY. |
|
Improper treatment and disposal of perchlorate can be an environmental hazard in regions where solid rocket motors are used, tested, or stored. The solubility and mobility of perc...
|
|
|
Monitored Attenuation of Inorganic Contaminants in Ground Water Volume 2 – Assessment for Non-Radionuclides Including Arsenic, Cadmium, Chromium, Copper, Lead, Nickel, Nitrate, Perchlorate, and Selenium |
|
This document represents the second volume of a set of three volumes that address the technical basis and requirements for assessing the potential applicability of MNA as part of a...
|
|
|
NATIONAL ACADEMY OF SCIENCES (NAS) REVIEW OF THE " HEALTH IMPLICATIONS OF PERCHLORATE INGESTION" |
|
In the interest of resolving scientific questions, the EPA, the Department of Defense, the Department of Energy, and the National Aeronautics and Space Administration - members of ...
|
|
|
NEUROPHYSIOLOGICAL CONSEQUENCES IN HIPPOCAMPUS AS A FUNCTION OF DEVELOPMENTAL HYPOTHYROIDISM. |
|
Thyroid hormones are essential for maturation and function of the mammalian central nervous system. Severe congenital hypothyroidism results in irreversible structural damage and m...
|
|
|
OCCURRENCE OF PERCHLORATE ANION IN PLANT ORGANS: METHOD DEVELOPMENT AND RESULTS OF ANALYSIS OF SELECTED PLANTS |
|
Perchlorate has recently been detected in ground and surface waters in several western states. Perchlorate is a rnobile and persistent oxy anion of chlorine. Ongoing laboratory stu...
|
|
|
OVERVIEW OF A NEW EPA METHOD: DETERMINATION OF PERCHLORATE IN DRINKING WATER, GROUNDWATER AND HIGH SALINITY WATER BY ION CHROMATOGRAPHY, SUPPRESSED CONDUCTIVITY WITH ELECTROSPRAY IONIZATION MASS SPECTROMETRIC DETECTION |
|
In this presentation the analytical instrumentation and procedures necessary to qualitatively and quantitatively determine low levels of perchlorate (ClO4-) in drinking waters us...
|
|
|
OVERVIEW OF EMERGING CONTAMINANTS OF CONCERN IN DRINKING WATER |
|
Much has been achieved in the way of environmental protection over the last 30 years. However, as we learn more, new concerns arise. This presentation will discuss chemical and mic...
|
|
|
OVERVIEW OF PROPOSED EPA METHOD 330.0: DETERMINATION OF PERCHLORATE IN DRINKING WATER BY SUPPRESSED CONDUCTIVITY ION CHROMATOGRAPHY AND MASS SPECTROMETRIC DETECTION |
|
There is no abstract available for this product. If further information is requested, please refer to the bibliographic citation and contact the person listed under Contact field....
|
|
|
PERCHLORATE ACCUMULATION FROM FERTILIZER IN LEAFY VEGETATION |
|
Perchlorate contaminated water and soil has been identified in many areas of the United States. Previous studies indicated that the primary source of contamination was from industr...
|
|
|
PERCHLORATE AS AN ENVIRONMENTAL CONTAMINANT |
|
Perchlorate anion (C104) has been found in drinking water supplies throughout the southwestern United States. I t is primarily associated with releases of ammonium perdhlorate by...
|
|
|
PERCHLORATE BEHAVIOR IN A MUNICIPAL LAKE FOLLOWING FIREWORKS DISPLAYS |
|
Perchlorate salts of potassium and ammonium are the primary oxidants in pyrotechnic mixtures, yet insufficient information is available regarding the relationship between fireworks...
|
|
|
PERCHLORATE CROP INTERACTIONS VIA CONTAMINATED IRRIGATION WATER |
|
Perchlorate has contaminated water and sods at several locations in the United States. Perchlorate is water soluble, exceedingly mobile in aqueous systems, and can persist for many...
|
|
|
PERCHLORATE ENVIRONMENTAL CONTAMINATION: TOXICOLOGICAL REVIEW AND RISK CHARACTERIZATION (2002 EXTERNAL REVIEW DRAFT) |
|
Perchlorate (ClO4-) is an anion that originates as a contaminant in ground water and surface waters when the salts of ammonium, potassium, magnesium, or sodium dissolve in water. ...
|
|
|
PERCHLORATE ENVIRONMENTAL CONTAMINATION: TOXICOLOGICAL REVIEW AND RISK CHARACTERIZATION BASED ON EMERGING INFORMATION (EXTERNAL REVIEW DRAFT) |
|
Perchlorate (ClO4-) is an anion that originates as a contaminant in ground water and surface waters from the dissolution of ammonium, potassium, magnesium, or sodium salts. Because...
|
|
|
PERCHLORATE FACTS |
|
Perchlorate is an anion (negative ion) with the formula C1O 4-. Perchlorate salts are famous in inorganic chemistry on account of their high solubilities. As a result, they are v...
|
|
|
PERCHLORATE IDENTIFICATION IN FERTILIZERS |
|
Perchlorate has contaminated groundwater, drinking water, and soils at several locations in the United States. The primary source of contamination at sites that have been investiga...
|
|
|
PERCHLORATE IDENTIFICATION IN FERTILIZERS AND ACCUMULATION IN LETTUCE SEEDLINGS |
|
Perchlorate has contaminated groundwater, drinking water and soils at several locations in the U.S. The primary source of contamination at sites that have been investigated to date...
|
|
|
PERCHLORATE IN FERTILIZERS?: ANALYSIS BY RAMAN SPECTROSCOPY |
|
Recently, we and others found perchlorate at high levels (approximately 500 - 8000 mg/kg) in 90+% of 25+ fertilizers (primarily lawn-and-garden products) that are not identified as...
|
|
|
PERCHLORATE LEVELS IN SAMPLES OF SODIUM NITRATE FERTILIZER DERIVED FROM CHILEAN CALICHE |
|
Paleogeochemical deposits in northern Chile are a rich source of naturally occurring sodium nitrate. These caliche ores are mined and processed to isolate NaNO3 (16-0-0) for use i...
|
|
|
PERCHLORATE PHYTOREMEDIATION USING HARDWOOD TREES AND VASCULAR PLANTS |
|
Perchlorate has contaminated water and soils at several locations in the United States. Perchlorate is
water soluble, exceedingly mobile in aqueous systems, and can persist for ...
|
|
|
PERCHLORATE UPTAKE AND TRANSFORMATION IN AQUATIC PLANTS |
|
Ammonium Perchlorate (AP) is produced on a large scale by the chemical industry, for a wide range of applications for example, as a strong oxidizing agent in solid rocket fuel. AP ...
|
|
|
PERCHLORATE UPTAKE BY SALT CEDAR (TAMARIX RAMOSISSIMA) IN THE LAS VEGAS WASH RIPARIAN ECOSYSTEM |
|
Perchlorate ion (CIO4-) has been identified in samples of dormant salt cedar (Tamarix ramosissima) growing in the Las vegas Wash. Perchlorate is an oxidenat, but its reduction is ...
|
|
|
PERCHLORATE-CROP INTERACTIONS FROM CONTAMINATED IRRIGATION WATER AND FERTILIZER APPLICATIONS |
|
Perchlorate has contaminated water and soils at several locations in the United States. Perchlorate is water soluble, exceedingly mobile in aqueous systems, and can persist for man...
|
|
|
PERFORMANCE OF POLYVINYL ALCOHOL GEL COLUMNS ON THE ION CHROMATOGRAPHIC DETERMINATION OF PERCHLORATE IN FERTILIZERS |
|
Interest in possible sources of perchlorate (ClO4-) that could lead to environmental release has been heightened since the EPA placed this anion on its Contaminant Candidate List (...
|
|
|
PHYTOREMEDIATION OF PERCHLORATE |
|
Perchlorate is taken up from contaminated waters by a variety of plants under a wide range of conditions similar to those observed at contaminated sites....
|
|
|
PHYTOREMEDIATION OF PERCHLORATE BY TOBACCO PLANTS |
|
Previous studies have shown that tobacco plants are tolerant of perchlorate and will accumulate perchlorate in the plant tissues. The objective of this research was to determine t...
|
|
|
PHYTOTRANSFORMATION OF PERCHLORATE AND IDENTIFICATION OF METABOLIC PRODUCTS IN MYRIOPHYLLUM AQUATICUM |
|
There is no abstract available for this product. If further information is requested, please refer to the bibliographic citation and contact the person listed under Contact field....
|
|
|
PHYTOTRANSFORMATION OF PERCHLORATE USING PARROT-FEATHER |
|
Perchlorate is an oxvanion that has been extensively is a strong oxidizing
agent in solid rocket fuel. Contamination of groundwater has occurred as the result of Perchlorate use...
|
|
|
PHYTOTRANSFORMATIONS OF PERCHLORATE CONTAMINATED WATERS |
|
There is no abstract available for this product. If further information is requested, please refer to the bibliographic citation and contact the person listed under Contact field....
|
|
|
POLISHING THE EFFLUENT FROM AN ANAEROBIC BIOLOGICAL PERCHLORATE TREATMENT PROCESS |
|
Anaerobic biological processes effectively reduce perchlorate to chloride. However, the effluent can be biologically unstable, high in particulates and high in disinfection by-prod...
|
|
|
POLISHING THE EFFLUENT FROM AN ANAEROBIC BIOLOGICAL PERCHLORATE TREATMENT PROCESS - SLIDES |
|
Anaerobic biological processes effectively reduce perchlorate to chloride. However, the effluent can be biologically unstable, high in particulates and high in disinfection by-prod...
|
|
|
POTENTIAL SPECIES FOR PHYTOREMEDIATION OF PERCHLORATE. ATHENS, GA: US ENVIRONMENTAL PROTECTION AGENCY |
|
Phytoremediation is the use of plants to cleanse soil and water contaminated with organic or inorganic pollutants. This promising new field of research can be used for in situ cle...
|
|
|
PREDICTING FIELD PERFORMANCE OF HERBACEOUS SPECIES FOR PHYTOREMEDIATION OF PERCHLORATE |
|
Results of these short-term experiments coupled with ecological knowledge of the nine herbaceous plant species tested suggest that several species may by successful in on-site reme...
|
|
|
QUANTITATION OF PERCHLORATE ION BY ELECTROSPRAY IONIZATION MASS SPECTROMETRY (ESI-MS) USING STABLE ASSOCIATION COMPLEXES WITH ORGANIC CATIONS AND BASES TO ENHANCE SELECTIVITY |
|
Quantitation of trace levels of perchlorate ion in water has become a key issue since this species was discovered in water supplies around the United States. Although ion chromato...
|
|
|
QUANTITATION OF PERCHLORATE ION: PRACTICES AND ADVANCES APPLIED TO THE ANALYSIS OF COMMON MATRICES |
|
In 1997, low level perchlorate contamination (<50 ng mL-1 or parts per billion) was discovered in the western United States. Since that time, it has been found in sites scattered ...
|
|
|
RAMAN ANALYSIS OF FERTILIZER AND PLANT TISSUE EXTRACTS FOR PERCHLORATE CONTAMINATION |
|
Recently, we and others found perchlorate at high levels (approximately 500 - 8000 mg/kg) in ~ 90% of 25+ fertilizers products (primarily lawn-and-garden type) with no known link t...
|
|
|
RAMAN SPECTRAL ANALYSIS OF PERCHLORATE CONTAMINATION IN COMMONLY-USED FERTILIZERS |
|
Raman spectroscopy (RS) was used for qualitative and quantitative analysis of perchlorate (ClO4-1) in 30+ commonly-used fertilizers. Perchlorate contamination is emerging as an im...
|
|
|
RAMAN SPECTROSCOPIC ANALYSIS OF FERTILIZERS AND C FOR PERCHLORATE-JOURNAL ARTICLE |
|
Raman spectroscopy, without the need for prior chromatographic separation, was used for qualitative and quantitative analysis of 59 samples of fertilizers for perchlorate (ClO4-). ...
|
|
|
RAMAN SPECTROSCOPIC ANALYSIS OF FERTILIZERS AND PLANT TISSUE FOR PERCHLORATE |
|
Raman spectroscopy, without the need for prior chromatographic separation, was used for qualitative and quantitative analysis of 59 samples of fertilizers for perchlorate (ClO4-). ...
|
|
|
REMEDIATION OF PERCHLORATE CONTAMINATED GROUND WATER AND SURFACE WATER |
|
There is no abstract available for this product. If further information is requested, please refer to the bibliographic citation and contact the person listed under Contact field....
|
|
|
REMOTE SENSING OF PERCHLORATE EFFECTS ON SALT CEDAR PRELIMINARY RESULTS FROM THE LAS VEGAS WASH |
|
Sodium Perchlorate and ammonium Perchlorate, major components of solid rocket fuel, have been manufactured in the Las Vegas Valley immediately up gradient from the Las Vega...
|
|
|
REMOVING ESOTERIC CONTAMINANTS FROM DRINKING WATERS: IMPACTS OF TREATMENT IMPLEMENTATION |
|
At first blush, the production and distribution of drinking water seems to be a very straight forward process. There is a need to remove microbial agents and any anthropogenic or a...
|
|
|
REPORT ON THE PEER REVIEW OF THE U.S. EPA'S DRAFT EXTERNAL REVIEW DOCUMENT " PERCHLORATE ENVIRONMENTAL CONTAMINATION: TOXICOLOGICAL REVIEW AND RISK CHARACTERIZATION" |
|
This report summarizes the comments made at a two-day independent scientific peer review meeting on the Agency's draft assessment of health and ecotoxicological effects of perchlor...
|
|
|
STABLE ASSOCIATION COMPLEX ELECTROSPRAY MASS SPECTROMETRY FOR THE DETERMINATION OF CYANURIC ACID |
|
Cyanuric acid is a suspected gastrointestinal or liver toxicant in humans, and its long term effects on ecosystems are unknown. Cyanuric acid enters the environment in several ways...
|
|
|
STATISTICAL APPROACH TO BRAIN MORPHOMETRY DATA REQUIRED IN DEVELOPMENTAL NEUROTOXICITY (DNT) TESTING GUIDELINES: PROFILE ANALYSIS. |
|
Brain morphometry measurements are required in test guidelines proposed by the USEPA to screen chemicals for developmental neurotoxicity. Because the DNT is a screening battery,...
|
|
|
STATUS OF WSWRD'S PERCHLORATE RESEARCH |
|
The 1996 amendments to the Safe Drinking Water Act (SWDA) require the US Environmental Protection Agency (USEPA) to establish a list of unregulated microbiological and chemical con...
|
|
|
SUB-PPB QUANTITATION AND CONFIRMATION OF PERCHLORATE IN DRINKING WATERS CONTAINING HIGH TOTAL DISSOLVED SOLIDS USING ION CHROMATOGRAPHY WITH MASS SPECTROMETRIC DETECTION |
|
Perchlorate (ClO4 -) is a drinking water contaminant originating from the dissolution of the salts of ammonium, potassium, magnesium, or sodium in water. It is used primarily as...
|
|
|
SURVEY OF BOTTLED WATERS FOR PERCHLORATE BY ELECTROSPRAY IONIZATION MASS SPECTROMETRY (ESI-MS) AND ION CHROMATOGRAPHY (IC) |
|
Perchlorate has been identified in ground and surface waters around the US, including some that serve as supplies for drinking water. Because perchlorate salts are used as solid ox...
|
|
|
SURVEY OF FERTILIZERS AND RELATED MATERIALS FOR PERCHLORATE |
|
The most comprehensive survey of fertilizers and other raw materials for perchlorate to date has been conducted to determine whether these could be significant contributors to envi...
|
|
|
THE EFFECTS OF AMMONIUM PERCHLORATE ON THYROIDS |
|
In response to recommendations made at the February 1999 external peer review of the December 1998 document entitled, Perchlorate Environmental Contamination: Toxicology Review and...
|
|
|
THE REDUCTIVE TRANSFORMATION OF PERCHLORATE IN A FRESH WATER SEDIMENT: LABORATORY BATCH STUDIES |
|
Perchlorate is widely used as a propellant in solid rocket fuel, and has recently been found in ground, surface, and drinking water, in many cases above the interim action level of...
|
|
|
THE REDUCTIVE TRANSFORMATION OF PERCHLORATE IN A FRESH WATER SEDIMENT: LABORATORY BATCH STUDIES |
|
Perchlorate is widely used as a propellant in solid rocket fuel, and has recently been found in ground, surface, and drinking water, in many cases above the interim action level of...
|
|
|
THE REDUCTIVE TRANSFORMATION OF PERCHLORATE IN A FRESH WATER SEDIMENT: LABORATORY BATCH STUDIES. |
|
Perchlorate is widely used as a propellant in solid rocket fuel, and has recently been found in ground, surface, and drinking water, in many cases above the interim action level of...
|
|
|
THYROID AXIS INHIBITION IN XENOPUS LAEVIS: DEVELOPMENT OF AN AMPHIBIAN-BASED SCREENING ASSAY |
|
In response to the initial EDSTAC recommendations, research was conducted on the development of a Xenopus laevis based tail resorption assay for evaluating thyroid axis disruption....
|
|
|
THYROID AXIS INHIBITION IN XENOPUS LAEVIS: DEVELOPMENT OF AN AMPHIBIAN-BASED SCREENING ASSAY FOR THYROID DISRUPTION |
|
In response to the initial EDSTAC recommendations, research was conducted on the development of a Xenopus laevis based tail resorption assay for evaluating thyroid axis disruption....
|
|
|
THYROID AXIS INHIBITION IN XENOPUS LAEVIS: GENE EXPRESSION CHANGES IN THE BRAIN |
|
Previously, we have proposed an amphibian-based thyroid axis screening assay in which NF stage 54 tadpoles are exposed for 14 day and disruption of the axis is determined by measur...
|
|
|
THYROID HORMONE DISRUPTION: FROM KINETICS TO DYNAMICS. |
|
A wide range of chemicals with diverse structures act as thyroid disrupting chemicals (TDCs). Broadly defined, TDCs are chemicals that alter the structure or function of the thyroi...
|
|
|
Use of a Simple Pharmacokinetic Model to Characterize Exposure to Perchlorate |
|
This article is about how a simple two-compartment first-order pharmacokinetic model that predicts concentrations of perchlorate in blood and urine was constructed and validated. T...
|
|
