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首页> 外文期刊>Environmental Science & Technology >2,3,7,8-Tetrachlorodibenzo-p-dioxin Dechlorination is Differentially Enhanced by Dichlorobenzene Amendment in Passaic River, NJ Sediments
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2,3,7,8-Tetrachlorodibenzo-p-dioxin Dechlorination is Differentially Enhanced by Dichlorobenzene Amendment in Passaic River, NJ Sediments

机译：Pastaic River，NJ沉积物中的二氯苯修正，二氯苯修正差异增强了2,3,7,8-四氯二氯二苯肼脱氯

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摘要

Polychlorinated dibenzo-p-dioxins (PCDDs) are a class of toxic organic compounds released by a number of industrial processes. Sediments of the Passaic River in New Jersey are contaminated by these compounds. To explore the ability of native organohalide respiring bacteria to dechlorinate PCDDs, we first enriched bacteria from sediments of the Passaic River on two organohalides, trichloroethene (TCE) and 1,2-dichlorobenzene (DCB). We then used these enriched sediment cultures and original, unamended sediment as the inocula in a secondary experiment with 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TeCDD), 1,2,3,4-tetrachlorodibenzo-p-dioxin (1,2,3,4-TeCDD), and 2,7-dichlorodibenzo-p-dioxin (2,7-DiCDD) as target organohalides. We observed dechlorination of 1,2,3,4-TeCDD by all inocula, although to different extents. We observed progressive dechlorination of 2,3,7,8-TeCDD only in bottles inoculated with the DCB enrichment culture, and dechlorination of 2,7-DiCDD almost exclusively in bottles inoculated with the original, unamended river sediment. Dechlorination of 1,2,3,4-TeCDD was more rapid than that of the other amended congeners. Phylotypes within the class Dehalococcoidia associated with organohalide dechlorination were differentially enriched in DCB versus TCE enrichment cultures, indicating that they may play a role in dechlorination of the PCDDs.
机译：多氯二苯苯并-P-二恶英（PCDDS）是一类由许多工业过程释放的有毒有机化合物。新泽西州的海洋河流沉积物被这些化合物污染。为了探讨本地有机卤化物呼吸细菌对脱氯酸盐的能力，我们首先在两个有机卤化物，三氯乙烯（TCE）和1,2-二氯苯（DCB）上富集的沉积物中的细菌。然后我们使用这些富集的沉积物培养物和原始沉积物，作为次要实验中的接种物，2,3,7,8-四氯二苯并二恶蛋白（2,3,7,8-Tecdd），1,2,3 ，4-四氯二氯二苯深素-P-二恶蛋白（1,2,3,4-TECDD）和2,7-二氯二苯肼-P-二恶蛋白（2,7-DICDD）作为靶有机卤化物。我们观察了所有接种物的1,2,3,4-Tecdd的脱氯，虽然不同的范围。我们观察到2,3,7,8-TECDD的渐进式脱氯仅在接种DCB富集培养物中接种的瓶子，几乎完全脱氯化瓶，其中2,7-DICDD用原始的河沉积物接种瓶子。 1,2,3,4-tecdd的脱氯比其他修订的同型的脱氯快得多。与有机卤代双脱氯相关的脱卤素内脱卤素内的Phylotypes在DCB与TCE富集培养物中差异富集，表明它们可能在PCDD的脱氯中发挥作用。

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  • 来源
    《Environmental Science & Technology》 |2020年第13期|8380-8389|共10页
  • 作者

    Rachel K. Dean; Cassidy R. Schneider; Haider S. Almnehlawi; Katherine S. Dawson; Donna E. Fennell;

  • 作者单位

    Department of Environmental Sciences Rutgers University New Brunswick New Jersey 08901 United States;

    Department of Environmental Sciences Rutgers University New Brunswick New Jersey 08901 United States;

    Department of Environmental Sciences Rutgers University New Brunswick New Jersey 08901 United States College of Science Al-Muthanna University Samawah AL-Muthanna 66001 Iraq;

    Department of Environmental Sciences Rutgers University New Brunswick New Jersey 08901 United States;

    Department of Environmental Sciences Rutgers University New Brunswick New Jersey 08901 United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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