The molecular characteristic of n-alkanes and PAHs in core sediments of Zhanjiang Bay and its environmental indication significance

Chen Zhiqiang; Zhao Lirong; Liu Beibei; Sun Xingli

doi:10.3969/j.issn.0253-4193.2016.08.012

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Chen Zhiqiang, Zhao Lirong, Liu Beibei, Sun Xingli. The molecular characteristic of n-alkanes and PAHs in core sediments of Zhanjiang Bay and its environmental indication significance[J]. Haiyang Xuebao, 2016, 38(8): 115-123. doi: 10.3969/j.issn.0253-4193.2016.08.012

Citation:

Chen Zhiqiang, Zhao Lirong, Liu Beibei, Sun Xingli. The molecular characteristic of n-alkanes and PAHs in core sediments of Zhanjiang Bay and its environmental indication significance[J]. Haiyang Xuebao, 2016, 38(8): 115-123. doi: 10.3969/j.issn.0253-4193.2016.08.012

Citation:

Chen Zhiqiang, Zhao Lirong, Liu Beibei, Sun Xingli. The molecular characteristic of n-alkanes and PAHs in core sediments of Zhanjiang Bay and its environmental indication significance[J]. Haiyang Xuebao, 2016, 38(8): 115-123. doi: 10.3969/j.issn.0253-4193.2016.08.012

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The molecular characteristic of n-alkanes and PAHs in core sediments of Zhanjiang Bay and its environmental indication significance

doi: 10.3969/j.issn.0253-4193.2016.08.012

1.
Monitoring Center for Marine Resources and Environments, Guangdong Ocean University, Zhanjiang 524088, China
2.
Guangdong center for Marine Resouce Research, Guangzhou 510220, China

Received Date: 2015-12-10
Rev Recd Date: 2016-02-19

Abstract

Abstract

Spatial distribution and components of n-alkanes and PAHs in the core sediments were investigated in Zhanjiang bay, and their different and common sources were discussed by methods of principal component analysis, correlation analysis and ratios of L/H, CPI, Ant/(Ant+Phe), Flu/(Flu+Pyr), BaA/(BaA+Chry) and IP/(IP+BghiP). This study aimed to found the different and common characteristics of n-alkane and PAHs from human activities, and future discussed their sources and effects of human activity on marine environment. Both of n-alkanes and PAHs had the same spatial distributions. Their levels were higher in bay and lower in out of bay but non-significant changes in vertical sediment samples. The CPI, results of principal component analysis, components spectrum of n-alkane and PAHs and the ratios showed that high molecular n-alkanes (C₂₅~C₃₅) were predominantly from higher plants but C₁₄~C₂₄ n-alkanes were from anthropogenic sources of oil leakage, fossil fuel combustion and biomass burning as the sources of PAHs. The results of this study indicated that n-alkanes and PAHs had the same anthropogenic sources and good correlation but their quantitative relation need further study, and both of them can be used to disused the effects of human activities on marine environment.
- core sediments,
- n-alkanes,
- PAHs,
- molecular characteristic,
- environmental indication significance

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