Summary

Original source:
http://www.sciencedaily.com/releases/2004/08/040819084005.htm

Details

• A toxic chemical used in hand soaps, cleaners and other personal care products to kill germs is deposited and remains in the environment long after the products are used, according to researchers at the Johns Hopkins Bloomberg School of Public Health.
• The chemical---3,4,4'-trichlorocarbanilide (triclocarban), marketed under the trademark TCC(TM)---is a non-agricultural polychlorinated phenyl urea pesticide that has been widely used for decades to kill bacteria.
• The researchers were among the first to detect concentrations of triclocarban in rivers and influent of wastewater treatment facilities.
• The study furnishes the first peer-reviewed environmental data of triclocarban contamination in U.S. water resources.
• From the chemical structure, one would expect the compound to concentrate in fish and bio-accumulate in the food chain, but at this point we can only speculate," said Dr. Halden.
• He added that more research is needed to determine whether the environmental contamination discovered translates into human exposure and any corresponding long-term risks.
• Prior to Dr. Halden's research, the most recent data on the fate of triclocarban in wastewater were from 1975, and no peer-reviewed studies were conducted on the occurrence of the chemical in U.S. water resources.
• The highest detected concentrations in surface waters of the Greater Baltimore area were 20 fold higher than previously reported levels, which are currently used by the United States Environmental Protection Agency for evaluation of the ecological and human health risks of triclocarban.
• "Analysis of Triclocarban in Aquatic Samples by Liquid Chromatography Electrospray Ionization Mass Spectrometry" was written by Rolf U. Halden and Daniel H. Paull.
• The research was supported by the National Institute for Environmental Health Sciences through the Johns Hopkins Center in Urban and Environmental Health, the Johns Hopkins Bloomberg School of Public Health Faculty Innovation Award and the Johns Hopkins Center for a Livable Future.

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