Premium
PESTICIDES IN GROUND WATER: DO ATRAZINE METABOLITES MATTER? 1
Author(s) -
Liu Shiping,
Yen Steven T,
Kolpin Dana W.
Publication year - 1996
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1996.tb03481.x
Subject(s) - atrazine , pesticide , groundwater , residue (chemistry) , environmental chemistry , chemistry , environmental science , aquifer , agronomy , biology , geotechnical engineering , biochemistry , engineering
Atrazine and atrazine‐residue (atrazine + two metabolites ‐ deethylatrazine and deisopropylatrazine) concentrations were examined to determine if consideration of these atrazine metabolites substantially adds to our understanding of the distribution of this pesticide in groundwater of the midcontinental United States. The mean of atrazine.residue concentrations was 53 percent greater than that of atrazine alone for those observations above the detection limit (> 0.05 μg/l). Furthermore, a censored regression analysis using atrazine‐residue concentrations revealed significant factors not identified when only atrazine concentrations were used. Thus, knowledge of concentrations of these atrazine metabolites is required to obtain a true estimation of risk of using these aquifers as sources for drinking water, and such knowledge also provides information that ultimately may be important for future management policies designed to reduce atrazine concentrations in ground water.