Sep 29, 2009

Concern over Great Lakes fish will remain even after current toxins fade.

New York's advisories on consumption of Lake Ontario fish are based on chemicals that, for the most part, were banned decades ago and are increasingly rare in the environment... Lurking in the background are a variety of other contaminants that can accumulate in Great Lakes fish.

"We know of other compounds that are likely out there," ... At the top of this list, said Skinner and others, are polybrominated diethyl ethers, or PBDEs, which are flame retardants that were added to plastics used in electronics, furniture foam, textiles and other products. The sole U.S. manufacturer ended production of most forms of PBDE in 2004, but they remain ubiquitous in the environment.

"We know the concentrations in water from Lake Ontario increased exponentially, which was reflective of usage in industry," Skinner said.

The DEC does not test fish for these compounds. Federal officials do limited monitoring, and the state hopes to pursue a federal grant to begin PBDE monitoring of its own, Skinner said...

Horn said there were other chemicals such as polyaromatic hydrocarbons, perfluorinated compounds and the common anti-bacterial agent triclosan — that may build up in fish and bear watching.

"There's no question that a lot of these chemicals are of concern," he said.

One reason that New York has a statewide advisory against eating more than one meal a week of sport fish is the potential impact of these emerging compounds, he said.


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