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首页> 外文期刊>Geochemistry: Exploration, Environment, Analysis >The vertical variations of hydrocarbon pollutants and organochlorine pesticide residues in a sediment core in Lake Taihu, East China
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The vertical variations of hydrocarbon pollutants and organochlorine pesticide residues in a sediment core in Lake Taihu, East China

机译：中国东部太湖沉积物中碳氢化合物污染物和有机氯农药残留的垂直变化

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摘要

A sedimentary core in Wulihu Bay in Lake Taihu, the third largest freshwater lake in China, was analysed to delineate the vertical variation of alkanes, polycyclic aromatic hydrocarbon compounds (PAHs) and organochlorine pesticide (OCP) residues. The measured PAH compounds are the 16 US Environmental Protection Agency (US EPA) priority contaminants. The distribution patterns of normal alkanes indicate that they originate mainly from terrestrial inputs and autochthonous organisms as well as petroleum residues. Total PAH levels are mainly in the range of 698–962 ng/g dry weight with 4-ring compounds dominant. Twenty organochlorine pesticides were quantitatively determined, of which - HCH, ß- HCH, p,p'-DDT and its degradation product p,p'-DDD and Dieldrin were dominant. Total organochlorine pesticides, HCH compounds and DDT compounds were in the range of 14–104 ng/g, 3.0–10.4 ng/g and 0.65–38 ng/g dry weight, respectively. The sum of DDT and HCH compounds represents 30–47% of total pesticides residues. Total OCP residues, DDT compounds and HCH compounds reach peak concentrations at the depth of 2–4 cm, which may be related to the serious flooding in the Yangzi River in 1998.Their sharp drop in the 0–2 cm interval may be due to the comprehensive control and treatment of pollution in Lake Taihu drainage area implemented by the Chinese Government since 1998.
机译：分析了中国第三大淡水湖太湖五里湖湾的沉积岩心，以描绘出烷烃，多环芳烃化合物 < / sup>（PAHs）和有机氯农药（OCP）残留物。测得的 PAH化合物是16种美国环境保护署 （美国EPA）优先污染物。 正构烷烃的分布模式表明，它们主要来自陆生 投入物和本地生物以及石油残留物。 总PAH水平主要来自干重范围为698–962 ng / g ，其中四环化合物占主导。定量测定了20种有机氯农药，其中-HCH，ß- HCH，p，p'-DDT及其降解产物p，p'-DDD和Dieldrin 占主导地位。有机氯农药，六氯环己烷化合物 和滴滴涕化合物的总干重范围是14-104 ng / g，3.0-10.4 ng / g和0.65-38 ng / g干重， 分别。滴滴涕和六氯环己烷化合物的总量 占农药残留总量的30-47％。 OCP残留总量，DDT化合物和HCH化合物 在2-4 cm的深度达到峰值浓度，这可能与长江中下游的严重洪水有关> 1998。它们在0–2 cm的间隔内急剧下降可能是由于 对太湖流域实施的综合治理和污染治理。 1998年以来的中国政府。

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  • 来源
    《Geochemistry: Exploration, Environment, Analysis》 |2005年第1期|00000099-00000104|共6页
  • 作者

    Xianzhi Peng; Gan Zhang; Leping Zheng; Bixian Mai; Shiwen Zeng;

  • 作者单位

    State Key Laboratory of Organic GeochemistryGuangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China (e-mail: pengx@gig.ac.cn);

    State Key Laboratory of Organic GeochemistryGuangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China (e-mail: pengx@gig.ac.cn);

    Department of Environmental Engineering, Shanghai University, Shanghai 200072, China;

    State Key Laboratory of Organic GeochemistryGuangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China (e-mail: pengx@gig.ac.cn);

    Department of Environmental Engineering, Shanghai University, Shanghai 200072, China;

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  • 正文语种 eng
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  • 关键词

    Lake Taihu; sediment core; hydrocarbon pollutants; organochlorine pesticides residues;

    机译：太湖沉积物芯碳氢化合物污染物;有机氯农药残留;

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