Entering a Search Query �
Complete information as appropriate in one or more of the query boxes described
below, and use checkboxes, radio buttons, and drop-down menus as
necessary.� The search will be initiated
when you click the �Search� button.� To
erase your search terms and start over with a blank box, click on the �Clear�
button.
Chemical Name or CAS Registry Number�
Enter the name(s) or Chemical Abstracts Services Registry Number(s) of the
chemical(s) you are searching for, e.g., ammonia, mercury, 50-00-0.
Synonym
Searching - If your query consists of chemicals, TOXNET will,
by default (i.e.,
the radio button �Yes� is selected) expand your search by adding
synonyms and CAS Registry Numbers.�
Thus, if you enter �perchloroethylene,� the system will add the RN
127-18-4 and synonyms such as tetrachloroethylene and tetrachloroethene.� You have the option to turn off this feature
by marking the button �No.�� This
will result in a search only for the exact word(s) you entered.� In the example above, the system would look
only for the word �perchloroethylene.��
TRI File Year Selection � Check one or more of these boxes to select the
year(s) of TRI you want to search.� The
first choice (also the default) is the most recent file year available.� This is followed by preceding years.� Note � earlier years of TRI, dating back to
1987, are not available through TOXNET.�
For more information, visit EPA�s Web site at http://www.epa.gov/tri.
Facility Names� Enter the name of the
TRI reporting facility, e.g., Goodyear.� Click on the Browse Index box if in doubt of
the facility name�s format.� Multiple
facilities may be entered and separated by commas.
Facility Location�
Select the radio button for the state, city/state, county/state, or zip code of
the facility and enter the location.
Greater
Than � Use
the drop-down menus here if you are searching for a release greater than a
certain number of pounds to the air, water, soil, underground injection, or as
a total.� The default selection � i.e., 0 lbs, No Release
Selected � will not limit the search by release amount and will retrieve
records of 0 and greater releases.
This feature displays a
segment of the TRI index beginning with the term you enter and lets you scan
the index alphabetically (or numerically) above or below the original display
by clicking on the �UP� or �DOWN� button.�
The number of TRI records containing each of the terms is
displayed.� By checking boxes next to
the index terms of interest and clicking on the �Check to Select� button, you
can search on these terms.� You may
browse the index to all words, CAS Registry Numbers, chemical names, facility
names, or facility cities.
Databases (The
Left Column of the Screen)
Clicking on any of the cells
in this column will take you directly to the search screen for the database
listed.� �Multi-databases� offers
simultaneous searching of HSDB, CCRIS, IRIS, and GENE-TOX.� The information icon (�i�) next to each
database provides a brief description of it, with links to a more detailed Fact
Sheet and a sample record.�
Other
NLM Resources, Support Pages (The
Right Column of the Screen)
You may also visit
additional NLM Web-Based Resources:
����������� DIRLINE �� Directory
andof health and scientific
organizations.
����������� Tox Web Links � Links to additional toxicology web sites.
����������� MEDLINEplus Tox/Env Health � Consumer health information
on toxicology and environmental
����������� Hhealth topics.
����������� PubMed � Access to the MEDLINE database of biomedical
literature.
����������� NLM Gateway ��
Searches across multiple NLM databases.
����������� Locatorplus � NLM�s online catalog of books,
audiovisuals, and journals.
Or Support Pages:
Help
� Detailed documentation, such as what you are now reading, about
searching TOXNET.
����������� Fact Sheet - For an expanded description of TRI.
����������� Sample Record � A look at a sample TRI record.
Your initial retrieval is
displayed as a list of abbreviated records consisting of� TRI database year, facility name,
(underlined and in
blue and hot-linked), chemical name, and
city and state where the facility is located.�
The order of the display is based upon a Relevancy Ranking
algorithm.
By checking one or more of
the numbered boxes to the left of each record, you can perform later operations
(e.g., saving,
downloading) on these selections.�
Click on any of the
retrieved records to view all or portions of the record.
Calculate Release! �
Itemizes and sums up the total air, water, soil, and underground injection
releases as well as transfers to publicly owned treatment works and other
off-site locations in tabular form.
Save Checked Items � This is used to create a subset of your search
results. First check the records you want to save.� Then click �Save Checked Items.��
The system confirms the number of items you saved and lets you display
just these references by clicking on a new button which is added to the sidebar
� �Display Saved Items.�
Sort � Sort all or some of the records alphabetically
(ascending or descending) by substance name, facility name, city, or state.
Details �
Summarizes the strategy used by TOXNET to perform your search.� This will include your query terms plus any
registry numbers added by the system.
Download � You can download all or
some of the records in �brief� or �full� formats.
Modify Search � Returns you to the Basic sSearch screen with your
search strategy retained.� You can make
changes or perform a new search at this point.
New Search � Return to the Basic Search screen with the search
box cleared so that you can enter a new search.
Browse Index � This feature displays a
segment of the TRI index beginning with the term you enter and lets you scan
the index alphabetically (or numerically) above or below the original display
by clicking on the �UP� or �DOWN� button.�
The number of TRI records containing each of the terms is displayed.� By checking boxes next to the index terms of
interest and clicking on the �Check to Select� button, you can search on these
terms.� You may browse the index to all
words, CAS Registry Numbers, chemical names, facility names, or facility
cities.
TOXNET Home � Return to the TOXNET Home Page.
The top and bottom of each
Search Results page displays the total number of pages, the current page
number, the total number of items, and the items displayed on the current page.
You can navigate through multi-page search results by specifying a page number
and pushing the �Go� button, or using the small blue arrows to go forwards and
backwards.� These navigation features
appear at the top and bottom of each page of search results.
About
the Selected Record Screen
This screen displays the
record for whichever item you selected on the Results Screen.� From the Table of Contents, you can select
to view the entire TRI record or portions thereof (by expanding and contracting
categories, and checking categories and/or fields).
The search term(s) you
entered will be highlighted in red wherever they appear in the text of the
selected record.
Across the top of the screen
is a header of buttons with more options:
Next
Item � Move forward for a display of the next item (if
there is one) in your search retrieval or saved items set.
Previous
Item � Move
backward for a display of the previous item (if there is one) in your search
retrieval or saved items set.
Search
Results � Return
to the Search Results display.
New
Search �
Return to the Basic Search screen with the search box cleared so that you can
enter a new search.
Details �
Displays a summary of the strategy you specified for your search and synonyms
added by the system.
Other
Files � Link directly to records in other TOXNET toxicology data
or bibliographic files
(e.g., CCRIS, IRIS, GENE-TOXLINE) containing
information on your selected chemical.�
Modify
Search �
Return to the Basic Search screen with your search strategy retained.� You can make changes or perform a new search
at this point.
Download �
You can download the record in full format.
Browse
Index -
Displays a segment of the TRI index beginning with the term you enter and lets
you scan the index alphabetically (or numerically) above or below the original
display by clicking on the �UP� or �DOWN� button.� The number of TRI records containing each of the terms is
displayed.� By checking boxes next to
the index terms of interest and clicking on the �Check to Select� button, you
can search on these terms.� You may
browse the index to all words, CAS Registry Numbers,� chemical names, facility names, or facility cities.
TOXNET
Home �
Return to the TOXNET Home Page.
TRI
contains data on the estimated annual releases of toxic chemicals to the
environment � air, water, soil, underground injection; amounts transferred
off-site for waste treatment; and source reduction and recycling data.� Specific data fields are listed below:
TOXNET is best viewed with
Internet Explorer 4.0 or Netscape 4.0 or higher versions, for either PC or Mac.