Pesticide Contamination in Varied Pesticide-Use Settings
A municipal well that was part of a network to determine ambient water-quality across Iowa. All sampling took place as close to the wellhead as possible--prior to any treatment (e.g., chlorination). Water samples were representative of the aquifer (raw water), not what people were necessarily drinking -- from the Agricultural Chemicals in the Upper Midwest Project
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New pesticides are developed continually, and increasingly, degradation byproducts of legacy and current-use pesticides are discovered. Information on the environmental occurrence of these chemicals is needed to evaluate their potential environmental and human health significance. This project activity has two-fold objectives: (1) develop methods to measure new pesticides and their byproducts in samples of various environmental media at concentrations relevant to assessing their persistence, transport, and fate; and (2) gather information on the environmental occurrence of these chemicals in sensitive and/or susceptible ecosystems near areas of common use of the pesticide, such as areas of similar land use, crop types, and/or farming practices. Pesticide-use studies in selected settings include:
Herbicides and other Agricultural Chemicals -- Midwest Cornbelt
Cotton Agriculture -- Southern United States
Agricultural Chemicals in Ground Water -- Plains, Georgia [Completed]
Transport of Herbicides in Streams and Shallow Ground Water , Cedar River, Iowa [Completed]
Program Headlines Related to Pesticide Research
Fact Sheets
New Publications
Upcoming Publications
- Understanding the occurrence and transport of current-use pesticides in the San Francisco Estuary Watershed: Kuivila, K.M., and Hladik, M.L., San Francisco Estuary and Watershed Science (IN PRESS).
- The effect of grain-coating mineralogy on the storage and transport of nitrate and sulfate in the unsaturated zone: Reilly, T.J., Fishman, N.S., and Baehr, A.L., Vadose Zone Journal (IN PRESS).
- Multi-residue method for the analysis of 85 current-use and legacy pesticides in bed and suspended sediments: Smalling, K.L., and Kuivila, K.M., Journal of Chromatography A (IN PRESS).
Newly Published
- Understanding the occurrence and transport of current-use pesticides in the San Francisco Estuary watershed: Kuivila, K.M., and Hladik, M.L., 2008, San Francisco Estuary and Watershed Science, v. 6, no. 3, Article 2.
- The occurrence of glyphosate, atrazine, and other pesticides in vernal pools and adjacent streams in Washington, DC, Maryland, Iowa, and Wyoming, 2005–2006: Battaglin, W.A., Rice, K.C., Focazio, M.J., Salmons, S., and Barry, R.X., 2008, Environmental Monitoring and Assessment, doi:10.1007/s10661-008-0435-y (Advanced Web release).
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