Decadal-scale changes of pesticides in ground water of the United States, 1993-2003.

@article{Bexfield2008DecadalscaleCO,
  title={Decadal-scale changes of pesticides in ground water of the United States, 1993-2003.},
  author={Laura M Bexfield},
  journal={Journal of environmental quality},
  year={2008},
  volume={37 5 Suppl},
  pages={
          S226-39
        }
}
Pesticide data for ground water sampled across the United States between 1993-1995 and 2001-2003 by the U.S. Geological Survey National Water-Quality Assessment Program were evaluated for trends in detection frequency and concentration. The data analysis evaluated samples collected from a total of 362 wells located in 12 local well networks characterizing shallow ground water in agricultural areas and six local well networks characterizing the drinking water resource in areas of variable land… CONTINUE READING

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