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New chemical pollutants? Research finds fluorochemicals in water samples http://apocadocs.com/s.pl?1253592723
Another contaminant found in Canadian groundwater samples may join the list of environmental substances that could be harmful to humans and the environment....
The newest potential threat to human health and the environment is fluorochemicals known as perfluorinated phosphoric acids (PFPAs), which were found in water samples taken for study in the past decade from Canadian creeks, rivers and, waste treatment effluents.
PFPAs were found at 24 of 30 sites used in the research....
PFPAs are used commercially as leveling and wetting agents and to defoam additives used in pesticide formulations. Similar fluorochemicals have been used for industrial purposes since the 1950s but were not identified as widespread environmental contaminants until 2001. As noted in the article, PFPAs lack hydrogen atoms and may resist degradation, like other fluorochemicals such as PFCAs and PFSAs -- perfluorinated carboxylic and sulfonic acids -- that once were used commercially and now are regulated in the United States and Canada.
"From the analysis of Canadian surface waters, low-level PFPA contamination clearly is widespread," according to the authors.
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[Read more stories about:
pesticide runoff, endocrine disruptor, unintended consequences]
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