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黄河口及近海表层沉积物中烃类化合物的组成和分布

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Keywords: 正构烷烃,沉积物,多环芳烃,黄河口

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Abstract:

为探讨黄河口近海表层沉积物有机质中烃类化合物的分布特征及输运过程,2003年9月采集了南北两个断面表层沉积物样品,对沉积物中正构烷烃和多环芳烃进行了分析,结果表明,黄河口表层沉积物中正构烷烃和多环芳烃的含量分别为0.38~2.55和0.371~0.650μg/g。在南北断面两种烃类化合物的分布明显不同:北断面受石油平台影响,烃类化合物在口门含量较高;南断面受黄河输入影响,由于大颗粒易于沉降,而吸附烃类化合物的能力较强的小颗粒易长距离输运,使这两种烃类化合物的含量从河口到近海整体呈上升的趋势。与北断面

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