Evidence for the Formation of Difluoroacetic Acid in Chlorofluorocarbon-Contaminated Ground Water

Autor:	Ute Dorgerloh, Roland Becker, Melanie Kaiser
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	fluoroacetic acid DFA TFA rainwater ground water degradation of refrigerants Organic chemistry QD241-441
Zdroj:	Molecules, Vol 24, Iss 6, p 1039 (2019)
Druh dokumentu:	article
ISSN:	1420-3049
DOI:	10.3390/molecules24061039
Popis:	The concentrations of difluoroacetic acid (DFA) and trifluoroacetic acid (TFA) in rainwater and surface water from Berlin, Germany resembled those reported for similar urban areas, and the TFA/DFA ratio in rainwater of 10:1 was in accordance with the literature. In contrast, nearby ground water historically contaminated with 1,1,2-trichloro-1,2,2-trifluoroethane (R113) displayed a TFA/DFA ratio of 1:3. This observation is discussed versus the inventory of microbial degradation products present in this ground water along with the parent R113 itself. A microbial transformation of chlorotrifluoroethylene (R1113) to DFA so far has not been reported for environmental media, and is suggested based on well-established mammalian metabolic pathways.
Databáze:	Directory of Open Access Journals
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