证据表明，在含氯氟烃污染的地下水存在二氟乙酸的形成。
Evidence for the Formation of Difluoroacetic Acid in Chlorofluorocarbon-Contaminated Ground Water.
机构信息
Bundesanstalt für Materialforschung und -prüfung, BAM, 12489 Berlin, Germany.
出版信息
Molecules. 2019 Mar 15;24(6):1039. doi: 10.3390/molecules24061039.
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.
德国柏林雨水和地表水的二氟乙酸（DFA）和三氟乙酸（TFA）浓度与类似城市地区的报告相似，雨水样品中 TFA/DFA 比值为 10:1，与文献一致。相比之下，附近历史上受到 1,1,2-三氯-1,2,2-三氟乙烷（R113）污染的地下水显示出 TFA/DFA 比值为 1:3。这一观察结果与该地下水存在的微生物降解产物清单以及母体 R113 本身进行了讨论。目前尚未有关于环境介质中氯三氟乙烯（R1113）转化为 DFA 的微生物转化的报道，根据已建立的哺乳动物代谢途径，提出了这一建议。
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