红隼体内典型卤代有机污染物的含量及组织分配
Levels and tissue distribution of typical organohalogen pollutants in common kestrels (Falco tinnunculus)
查看参考文献35篇
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文摘
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以猛禽红隼为研究对象,对其肌肉和肝脏中6种代表性卤代有机污染物(OHPs)进行了检测分析.红隼肌肉和肝脏中总OHPs的含量分别为489—134000 ng·g~(-1)和186—135000 ng·g~(-1)(脂重).肝脏中6类OHPs的整体组成模式与肌肉类似,为滴滴涕(DDTs) >多氯联苯(PCBs)≈多溴联苯醚(PBDEs) >六溴环十二烷(HBCDs)、德克隆(DP)和十溴二苯乙烷(DBDPE).通过组织分配系数(TDR)考察了OHPs在红隼体内的组织分配特征,发现PBDEs、DDTs和HBCDs倾向于在红隼的肌肉中富集而DP优先在肝脏中富集; PCBs和 DBDPE在肌肉和肝脏之间则没有表现出分配的倾向性.造成上述现象的原因可能与OHPs在红隼体内的富集和再分配是否达到平衡有关,并且不同污染物的组织分配特征差异化程度要显著于点源高暴露地区的野生鸟类,暗示在进行有关组织分配研究结果的比较时,有必要对研究区域的类型加以考虑. |
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其他语种文摘
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In the present study,we determined six typical classes of organohalogen pollutants (OHPs) in the tissues of the resident predator,common kestrel (Falco tinnunculus),from North China.Total OHPs concentrations were 489—134000 ng·g~(-1) lw and 186—135000 ng·g~(-1) lw in kestrels' muscle and liver,respectively. Similar contaminant distribution characteristics were found between muscle and liver,with the profile as follows: dichlorodiphenyltrichloroethane and its metabolites (DDTs) >polychlorinated biphenyls (PCBs) ≈ polybrominated diphenyl ethers (PBDEs) >hexabromocyclododecanes (HBCDs), dechlorane plus (DP) and decabromodiphenylethane (DBDPE) . According to the values of tissue distribution ratio (TDR), PBDEs,DDTs and HBCDs were preferentially accumulated in kestrels' muscle,while DP was liver-specifically accumulated. PCBs and DBDPE showed no preference on the distribution between muscle and liver. Equilibrium of bioaccumulation and redistribution in the kestrel may have attribute to such finding. Contaminant-specific tissue distribution in the kestrels demonstrated higher variation in the studied area than that of wild birds from other hot spots. The result indicated the necessity to consider the type of research region when comparing the results among studies on tissue distribution. |
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来源
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环境化学
,2018,37(4):644-651 【核心库】
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DOI
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10.7524/j.issn.0254-6108.2017101202
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关键词
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卤代有机污染物
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组织分配
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猛禽
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滴滴涕(DDTs)
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多氯联苯(PCBs)
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多溴联苯醚(PBDEs)
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野生鸟类
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地址
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1.
广东第二师范学院生物与食品工程学院, 广州, 510303
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广东高校应用生态工程技术开发中心, 广州, 510303
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中国科学院广州地球化学研究所, 有机地球化学国家重点实验室, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0254-6108 |
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学科
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环境污染及其防治 |
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基金
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国家自然科学基金
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广东省自然科学基金
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大学生创新创业训练项目
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文献收藏号
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CSCD:6228905
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