10 Apr '11, 12am

Sludge Sloughs Off Perfluorinated Chemicals: Farmers often add nutrients to their fields in the form of treated...

For related articles and more information, please visit OCA's Environment and Climate Resource Center page , Farm Issues page , and our Toxic Sludge & Organic Compost page . Farmers often add nutrients to their fields in the form of treated sewage sludge, also called biosolids. Environmental scientists worry that chemical contaminants-in particular perfluorochemicals-in these biosolids could leach into the soil and eventually enter groundwater. In the first rigorous field study of how perfluorochemicals could leach from biosolids, researchers have found relatively low levels of the chemicals in soils treated with urban sewage sludge (Environ. Sci. Technol., DOI: 10.1021/es103903d ). Many consumer products, such as clothing and food wrappers, use perfluorochemicals as stain- or grease-resistant coatings. These chemicals get into household wastewater and eventually reach sew...

Full article: http://www.organicconsumers.org/articles/article_22973.cfm

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