Multivariate assessment of polycyclic aromatic hydrocarbons in surface sediments of the Beijiang, a tributary of the Pearl River in Southern China
Multivariate assessment of polycyclic aromatic hydrocarbons in surface sediments of the Beijiang, a tributary of the Pearl River in Southern China
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DOI：
10.1007/s10661-013-3423-9
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发表时间：
2014-02
影响因子：
3
通讯作者：
Mingwei Song;Min Gao;Panfei Wang;Kai Xie;Hui Zhang
中科院分区：
文献类型：
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作者：
Mingwei Song;Min Gao;Panfei Wang;Kai Xie;Hui Zhang
为评价北江上游沉积物中多环芳烃（PAH）的污染程度，采用气相色谱-质谱联用技术分析了北江上游42个沉积物样品中16种主要PAH的含量。沉积物中多环芳烃的浓度范围为44至8，921 ng g− 1干重。42个样点中有34个样点的多环芳烃以4 ~ 6环为主，占总多环芳烃的50%以上.基于主成分分析，结合多元线性回归，很明显，多环芳烃的最重要的贡献者是化石燃料燃烧（48%），柴油排放加上石油泄漏（33%），焦炭燃烧（19%）。北江表层沉积物中多环芳烃污染严重，主要来源于燃烧。
To estimate the severity of polycyclic aromatic hydrocarbon (PAH) contamination in the upper sediment of the Beijiang River, 42 sediment samples were analyzed for the presence of 16 key PAHs using gas chromatography–mass spectrometry. The concentrations of PAH in the sediment ranged from 44 to 8,921 ng g−1dry weight. The four- to six-ring PAHs, contributing >50 % to PAHs in 34 of the 42 sites, were the dominant species. Based on a principal component analysis, combined with multivariate linear regression, it became clear that the most important contributors of PAH were fossil fuel combustion (48 %), diesel emissions plus oil spillage (33 %), and coke combustion (19 %). The surface sediments of Beijiang River were grossly contaminated by PAHs mainly derived from combustion.