Comparison of 1,2-dichloroethane, dichloroethene and vinyl chloride carbon stable isotope fractionation during dechlorination by two Dehalococcoides strains

Marie Schmidt; Sascha Lege; Ivonne Nijenhuis

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Comparison of 1,2-dichloroethane, dichloroethene and vinyl chloride carbon stable isotope fractionation during dechlorination by two Dehalococcoides strains

机译：两种Dehaloccocoides菌株脱氯过程中1,2-二氯乙烷，二氯乙烯和氯乙烯碳稳定同位素分馏的比较

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Carbon stable isotope fractionation during 1,2-dichloroethane (1,2-DCA), dichloroethene (DCE) and vinyl chloride (VC) dechlorination was analysed for two Dehalococcoides strains, Dehalococcoides mccartyi strain 195 (formerly Dehalococcoides ethenogenes strain 195) and D. mccartyi strain BTF08, and used to characterize the reaction. The isotope enrichment factors (εC) determined for 1,2-DCA were -30.8 ± 1.3‰ and -29.0 ± 3.0‰ for D. mccartyi strain BTF08 and D. mccartyi strain 195, respectively. Enrichment factors (εC) determined for chlorinated ethenes with strain BTF08 were -28.8 ± 1.5‰ (VC), -30.5 ± 1.5‰ (cis-DCE) and -12.4 ± 1.1‰ (1,1-DCE). Product, ethene, related enrichment factors (εC_(1,2-DCA-ethene)) calculated for 1,2-DCA (-34.1 and -32.3%, for strain BTF08 and strain 195, respectively) were similar to substrate based enrichment factors (εCi_(1,2-DCA)) supporting the hypothesis that ethene is the direct product of 1,2-DCA dichloroelimination but that VC was a side product as result of branching in the reaction.

机译：分析了两个Dehaloccocoides菌株，即Dehalococcoides mccartyi菌株195（以前称为Dehalococcoides ethenogenes菌株195）和D.在1,2-二氯乙烷（1,2-DCA），二氯乙烯（DCE）和氯乙烯（VC）脱氯过程中的碳稳定同位素分馏。麦卡迪菌株BTF08，并用于表征反应。对于麦卡迪氏菌BTF08菌株和麦卡迪氏菌菌株195，针对1,2-DCA测定的同位素富集因子（εC）分别为-30.8±1.3‰和-29.0±3.0‰。测定菌株BTF08的氯化乙烯的富集因子（εC）为-28.8±1.5‰（VC），-30.5±1.5‰（cis-DCE）和-12.4±1.1‰（1,1-DCE）。 1,2，DCA的产物，乙烯，相关富集因子（εC_（1,2-DCA-乙烯））（对于BTF08菌株和195菌株分别为-34.1和-32.3％）与基于底物的富集因子相似（εCi_（1,2-DCA））支持以下假设：乙烯是1,2-DCA二氯消除的直接产物，而VC是反应中分支的结果的副产物。

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《Water Research》 |2014年第1期|146-154|共9页
作者
Marie Schmidt; Sascha Lege; Ivonne Nijenhuis;
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作者单位

Department of Isotope Biogeochemistry, Helmholtz Centre for Environmental Research - UFZ, Permoserstrasse 15, 04318 Leipzig. Germany;

Department of Isotope Biogeochemistry, Helmholtz Centre for Environmental Research - UFZ, Permoserstrasse 15, 04318 Leipzig. Germany;

Department of Isotope Biogeochemistry, Helmholtz Centre for Environmental Research - UFZ, Permoserstrasse 15, 04318 Leipzig. Germany;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Reductive dehalogenation; Dichloroethane; Dehalococcoides; CSIA;

机译：还原性脱卤;二氯乙烷脱卤球菌;美国汽车工业协会;

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5. Assessment of reductive dechlorination of vinyl chloride and characterization of enrichments that grow on vinyl chloride as the sole carbon and energy source. [D] . Gu, Zhongchun April. 2003

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Comparison of 1,2-dichloroethane, dichloroethene and vinyl chloride carbon stable isotope fractionation during dechlorination by two Dehalococcoides strains

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