Pollutants Found In House Dust Increase Pesticide's Toxicity

holinesterase activity by themselves, their potencies differed, with benzo(a)pyrene having the greatest relative effect on cholinesterase in combination with chlorpyrifos, and fluoranthene having the least. Perhaps most important, the combined effects appeared to be greatest at low-level concentrations of chlorpyrifos commonly encountered in environmental exposures.

A 1981 report indicates that 90 percent of all homes in the United States use pesticides, and usage is likely to be even higher today. The primary source of exposure to pesticides for the general U.S. population is in the indoor environment of the home.

Support for this study was provided by a Johns Hopkins University faculty development award.


Contact: Kathy Moore
Johns Hopkins University Bloomberg School of Public Health

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