A reconnaissance study of herbicides and their metabolites in surface water of the midwestern United States using immunoassay and gas chromatography/mass spectrometryE. Michael Thurman, Dana W. Kolpin, Donald A. Goolsby et al.|Environmental Science & Technology|1992Cited by 413
Herbicides in surface waters of the midwestern United States: the effect of spring flushE. Michael Thurman, Dana W. Kolpin, Donald A. Goolsby et al.|Environmental Science & Technology|1991Cited by 389
Occurrence of Selected Pesticides and Their Metabolites in Near-Surface Aquifers of the Midwestern United StatesDana W. Kolpin, Donald A. Goolsby, E. Michael Thurman|Environmental Science & Technology|1995Cited by 227
Herbicides and Their Metabolites in Rainfall: Origin, Transport, and Deposition Patterns across the Midwestern and Northeastern United States, 1990−1991Donald A. Goolsby, William A. Battaglin, E. Michael Thurman et al.|Environmental Science & Technology|1997Cited by 164
Occurrence of Selected Herbicides and Herbicide Degradation Products in Iowa's Ground Water, 1995Dana W. Kolpin, E. Michael Thurman, Stephen J. Kalkhoff et al.|Ground Water|1997Cited by 119