EDB's long-lasting legacy.
So far, he says, temperature seems to have the biggest effect on fostering chemical degradation -- the higher the temperature, the faster the breakdown. However, even at the 72[deg.]F typical of Florida's groundwater, Weintraub's research suggests the chemical half-life is very long--between 300 and 500 days. Additionally, he says, there is some concern that ethylene glycol, one breakdown product, might further degrade to formaldehyde.
Preliminary tests also indicate there might be some microbes capable of degrading contaminated water. However, Weintraub cautions that the brominated degradation products apparently generated by the microbes might themselves prove to be toxic. The tests mixed EDB-polluted water with sewage sludge--home to many chemical-degrading microbes. The Florida researcher has not yet identified which of the sludge's many indigenous microbes were active in degrading the pesticide.
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|Title Annotation:||degrading ethylene dibromide|
|Date:||May 18, 1985|
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