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首页> 外文期刊>Environmental Science & Technology >Alteration of Diastereoisomeric and Enantiomeric Profiles of Hexabromocyclododecanes (HBCDs) in Adult Chicken Tissues, Eggs, and Hatchling Chickens
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Alteration of Diastereoisomeric and Enantiomeric Profiles of Hexabromocyclododecanes (HBCDs) in Adult Chicken Tissues, Eggs, and Hatchling Chickens

机译：成年鸡组织，卵和孵化鸡中六溴环十二烷（HBCD）的非对映异构和对映异构分布的变化

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摘要

The concentrations and enantiomer fractions (EFs) of α-, β-, and γ-hexabromocyclododecanes (HBCDs) were measured in chicken diet sources (soil and chicken feed), home-raised adult chicken (Gallus domesticus) tissues, eggs during incubation, and hatchling chicken tissues. HBCD concentrations were not detected-0.69 ng/g dry weight (dw) and 25.6-48.4 ng/g dw in chicken feed and soil, respectively. HBCDs were detected in all adult chicken tissues, except the brain, at median levels of 13.1-44.0 ng/g lipid weight (lw). The proportions of or-HBCD in total HBCDs increased from 51% in soil to more than 87% in adult ducken tissues. The accumulation ratios (ARs) of α-HBCD from diet to adult chicken tissues were 4.27 for liver, 11.2 for fat, and 7.64-12.9 for other tissues, respectively. The AR and carry-over rate (COR) of a-HBCD from diet to eggs were 22.4 and 0.226, respectively. The concentrations of a-HBCD in hatchling chicken liver (median： 35.4 ng/g lw) were significantly lower than those in hatchling chicken pectoral muscle (median: 130 ng/g lw). The EFs of a-HBCD decreased from soil to adult chicken tissues and from eggs to hatchling chicken liver. Meanwhile, the EFs of γ-HBCD increased from soil to adult chicken tissues. These results indicate the preferential enrichment of (-)-α-HBCD and (+)-γ-HBCD in chickens. The alteration of diastereoisomeric and enantiomeric patterns of HBCDs might be influenced by the different absorption and elimination rates of the six HBCD enantiomers as well as variations in HBCD metabolism in chickens.
机译：测量了鸡饮食来源（土壤和鸡饲料），家养成年鸡（Gallus domesticus）组织，孵化过程中卵中α-，β-和γ-六溴环十二烷（HBCD）的浓度和对映体分数（EFs）。和孵化鸡肉纸巾。在鸡饲料和土壤中未检测到六溴环十二烷浓度-干重（dw）0.69 ng / g，干重25.6-48.4 ng / g。在除大脑外的所有成年鸡组织中都检测到了六溴环十二烷，其中值水平为13.1-44.0 ng / g脂重（lw）。六溴环十二烷中或-六溴环十二烷的比例从土壤中的51％增加到成年鸭嘴组织中的87％以上。从饮食到成年鸡组织的α-六溴环十二烷的累积比率（ARs）分别为肝脏4.27，脂肪11.2和其他组织7.64-12.9。从饮食到鸡蛋的a-六溴环十二烷的AR和残留率（COR）分别为22.4和0.226。孵化鸡肝中α-六溴环十二烷的浓度（中位数：35.4 ng / g lw）明显低于孵化鸡胸肌中的a-六溴环十二烷（中位数：130 ng / g lw）。从土壤到成年鸡的组织，从鸡蛋到孵化的鸡肝，α-六溴环十二烷的EF均下降。同时，γ-六溴环十二烷的EFs从土壤到成年鸡组织增加。这些结果表明在鸡中优先富集（-）-α-HBCD和（+）-γ-HBCD。六溴环十二烷的非对映异构和对映异构模式的改变可能受到六种六溴环十二烷对映体吸收和消除速率的不同以及鸡体内六溴环十二烷代谢的变化的影响。

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  • 来源
    《Environmental Science & Technology》 |2017年第10期|5492-5499|共8页
  • 作者

    Xiaobo Zheng; Lin Qiao; Runxia Sun; Xiaojun Luo; Jing Zheng; Qilai Xie; Yuxin Sun; Bixian Mai;

  • 作者单位

    College of Resources and Environment, South China Agricultural University, Guangzhou 510642, People's Republic of China,State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, People's Republic of China;

    Center for Environmental Health Research, South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, People's Republic of China;

    State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, People's Republic of China;

    State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, People's Republic of China;

    Center for Environmental Health Research, South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, People's Republic of China;

    College of Resources and Environment, South China Agricultural University, Guangzhou 510642, People's Republic of China;

    Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, People's Republic of China;

    State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, People's Republic of China;

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