| 莱州湾河流表层沉积物中六溴环十二烷的含量水平、分布及组成特征 |
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| 引用本文： | 刘艺凯,王景芝,唐建辉,于志强,张干.莱州湾河流表层沉积物中六溴环十二烷的含量水平、分布及组成特征[J].地球化学,2014(1):55-63. |
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| 作者姓名： | 刘艺凯 王景芝 唐建辉 于志强 张干 |
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| 作者单位： | 中国科学院海岸带环境过程与生态修复重点实验室(烟台海岸带研究所);山东省海岸带环境过程重点实验室;中国科学院烟台海岸带研究所;中国科学院大学;中国科学院广州地球化学研究所; |
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| 基金项目： | 中国科学院知识创新工程项目(KZCX2-YW-Q07-04,KZCX2-EW-QN210) |
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| 摘 要： | 从莱州湾附近河流采集了36个表层沉积物样品，采用高效液相色谱耦合三重四极杆串联质谱的分析方法对沉积物中的六溴环十二烷（HBCDsl3种异构体进行了测定，目的是表征研究区域内HBCDs的污染水平和组成特征，并探讨其分布、来源及影响因素。结果表明，莱州湾河流沉积物中ZHBCDs的含量范围为0．03～20．17ng／gdw（均值是2．14ng／gdw）：较国内外其他河流，该研究区域HBCDs含量水平较低。HBCDs异构体组成各不相同，除1个站位外，其他站位样品中7-HBCD占主导地位（52．3％～97．3％，均值72．4％），但是在农业区a-HBCD相对丰度较高。对HBCDs的分布特征及来源分析得出，含量较高的站点多集中在工业区，呈现出明显的点源特征：而远离工业区的采样点，HBCDs可能主要来自大气的传输和沉降，且HBCDs的含量与TOC含量呈现出较好的相关性，表明TOC是非工业区分布的一个控制因素。
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| 关 键 词： | 六溴环十二烷 表层沉积物 含量 分布 组成 莱州湾河流 |
Levels,distributions and isomer profiles of hexabromocyclododecanes in the riverine sediments of the Laizhou Bay area,North China |
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| LIU Yi-kai;WANG Jing-zhi;TANG Jian-hui;YU Zhi-qiang;ZHANG Gan.Levels,distributions and isomer profiles of hexabromocyclododecanes in the riverine sediments of the Laizhou Bay area,North China[J].Geochimica,2014(1):55-63. |
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| Authors: | LIU Yi-kai;WANG Jing-zhi;TANG Jian-hui;YU Zhi-qiang;ZHANG Gan |
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| Institution: | LIU Yi-kai;WANG Jing-zhi;TANG Jian-hui;YU Zhi-qiang;ZHANG Gan;Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes;University of Chinese Academy of Sciences;Guangzhou Institute of Geochemistry,Chinese Academy of Sciences; |
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| Abstract: | Thirty-six surface sediment samples were collected from nearly ten rivers or distributaries in the Laizhou Bay area. Three diastereoisomers of hexabromocyclododecanes （HBCDs） were analyzed by high performance liquid chromatograph, coupled to a triple quadrupole mass spectrometer （HPLC-MS/MS）. The concentrations of HBCDs ranged from 0.03 to 20.17 ng/g dw, with a mean vale of 2.14 ng/g dw. The study area is less contaminated by HBCDs in comparison with other riverine regions around the world. HBCD diastereoisomer profiles differed among the sediment samples, and ~-HBCD （52.3%-97.3%, mean 72.4%） was the dominant isomer （except one sample）, whereas a-HBCD contributions were relatively high in sediments from the rural areas. Higher concentrations occurred mostly at industry areas, indicating the sources of HBCD was direct discharge from local factories; however, in the less industrial areas, including urban areas and rural areas, sources of HBCDs were from atmospheric transport and deposition. Moreover, relatively strong correlation between TOC and HBCD concentrations suggested that TOC is the control factor for HBCD distribution in the less industrial areas. |
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| Keywords: | hexabromocyclododecanes （HBCDs） surface sediments concentration distribution isomer profiles Laizhou Bay rivers |
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