| 渤海湾表层沉积物中有机污染物组成、来源及其生态风险 |
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| 引用本文： | 胡树起,汤丽玲,马生明,等.渤海湾表层沉积物中有机污染物组成、来源及其生态风险[J].物探与化探,2014(2):309-317,324. |
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| 作者姓名： | 胡树起 汤丽玲 马生明 等 |
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| 作者单位： | 中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000 |
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| 基金项目： | 中国地质调查局项目（1212011120211） |
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| 摘 要： | 利用气相色谱—质谱方法对渤海湾表层沉积物中多环芳烃(PAHs)、多氯联苯(PCBs)和有机氯农药(OCPs)进行了测定,并研究了PAHs、PCBs和OCPs的组成与分布规律。结果表明,PAHs、PCBs和OCPs的均值分别为108×10-9、0.08×10-9和0.69×10-9,海域环境相对安全,但PAHs已呈现不利于人类及海洋生物健康的迹象。研究认为,PAHs主要来源于陆域的能源消耗;PCBs组成以低氯代联苯为主,高氯代组分极低;HCHs以工业输入为主,且发生了后期转化;DDTs主要是历史残留,且以厌氧方式降解。与国内同类研究相比,调查海域沉积物中PAHs、PCBs和OCPs的污染程度及生态风险均处于最低水平,并在近十年内呈现出降低的趋势。
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| 关 键 词： | 多环芳烃 多氯联苯 有机氯农药 生态风险评价 渤海湾 表层沉积物 |
COMPOSITION,SOURCE AND RISK ASSESSMENT OF THE ORGANIC POLLUTANTS IN THE SURFACE SEDIMENTS FROM THE BOHAI GULF |
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| HU Shu-qi,TANG Li-ling,MA Sheng-ming,WANG Hui-yan.COMPOSITION,SOURCE AND RISK ASSESSMENT OF THE ORGANIC POLLUTANTS IN THE SURFACE SEDIMENTS FROM THE BOHAI GULF[J].Geophysical and Geochemical Exploration,2014(2):309-317,324. |
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| Authors: | HU Shu-qi TANG Li-ling MA Sheng-ming WANG Hui-yan |
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| Institution: | ( Institute of Geophysical and Geochemical Exploration, CAGS, Langfang 065000, China) |
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| Abstract: | PAHs, PCBs, OCPs in the surface sediments from the Bohai Gulf were measured by GC-MS （gas chromatography-mass spectrometer）, and then their composition and distribution pattern were studied. The results show that the average values of PAHs, PCBs and OCPs are 108, 0.08 and 0.69＆#215;10-9 , respectively, suggesting that the sea area is comparatively safe; nevertheless, PAHs tend to impair the health of the human being and marine creatures. Studies show that PAHs mainly originate from the land-based energy consuming, that PCBs comprise mainly high-Cl PCB with small amounts of low-Cl PCB, that the source of HCHs is mainly industrial discharge which later experiences transformation, and that DDTs of the sediments are mainly historical residues whose degradation de-pends on the anaerobe. A comparison with the similar research results shows that the pollution grade and ecological risk of PAHs, PCBs, OCPs in the sediments from the study area are at minimum levels, and exhibit decreasing tendency in the past ten years. |
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| Keywords: | PAHs PCBs OCPs ecological risk assessment Bohai Gulf surface sediments |
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