Abstract

A variety of anaerobic sediments and soils consumed CFC-11 (CFCl 3 ) and CFC-12 (CF 2 Cl 2 ). An aerobic soil did not. Active microbial metabolism was required for CFC-12 uptake in all of the sediments examined. CFC-11 uptake was faster in the presence of microbial activity, but reduced components in the sediments also resulted in nonenzymatic CFC-11 consumption in most instances. CFC-12 uptake in a culture of Clostridium pasteurianum provided a model for the silent uptake of CFC-11 and CFC-12 that required active microbial metabolism

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