Lewis Zimmerman

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From semipermeable membrane devices (SPMDs) placed in five Mississippi Delta streams in 1996 and 1997, the persistent organic pollutants (POPs) aldrin, chlordane, DCPA, DDT, dieldrin, endrin, heptachlor, mirex, nonachlor, and toxaphene were detected. In addition, the insecticides chlorpyriphos, endosulfan, and hexachlorocyclohexanes were detected. Two(More)
One of the primary goals of the US Geological Survey (USGS) Laboratory in Lawrence, Kansas, is to develop analytical methods for the analysis of herbicide metabolites in surface and ground water that are vital to the study of herbicide fate and degradation pathways in the environment. Methods to measure metabolite concentrations from three major classes of(More)
Ohio's forests are a critical component of the state's natural resources. Covering nearly 8 million acres, or 30 percent of the state, these diverse forests support important biological communities and create habitat for wildlife, forest products, clean water, and opportunities for recreation. Essential to making sound decisions about Ohio's forests is(More)
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