Distributions and sources of polycyclic aromatic hydrocarbons in surface sediments from the Cross River estuary, SE Niger Delta, Nigeria

被引：28

作者：

Ekpo, Bassey Offiong ^{[1
]}

Oyo-Ita, Orok E. ^{[1
]}

Oros, Daniel R.

Simoneit, Bernd R. T. ^{[2
,3
]}

机构：

[1] Univ Calabar, Dept Pure & Appl Chem, Calabar, CR State, Nigeria

[2] King Saud Univ, COGER, Riyadh 11451, Saudi Arabia

[3] Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA

来源：

ENVIRONMENTAL MONITORING AND ASSESSMENT | 2012年 / 184卷 / 02期

关键词：

Natural diagenetically derived PAHs; River sediments; Sources; Tropics; RECENT LAKE-SEDIMENTS; ORGANIC-MATTER; PAHS; BAY; SMOKE; IDENTIFICATION; POLLUTANTS; INDICATORS; TRACERS; STRAIT;

D O I：

10.1007/s10661-011-2019-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Polycyclic aromatic hydrocarbon (PAH) analyses of surface sediments from the Cross River estuary by gas chromatography-mass spectrometry indicated natural diagenetically derived PAHs in the upper estuary, with minor and variable amounts of petrogenic and combustion-derived PAHs from human activities (lower estuary). The occurrence of significant amounts of perylene (average 23% of all PAHs) with the diagenetic natural PAHs in the middle estuary bordered by mangrove forests supports its origin from terrestrial organic matter. The natural PAHs represent the highest percentage (average 76%) of the total PAHs in this tropical environment. The traditional geochemical parameters, including the petrogenic PAHs, confirmed trace petroleum contamination in the estuary. Specific PAH ratios such as Fl/Py and Fl/(Fl+Py) also support this source contribution.

引用

页码：1037 / 1047

页数：11

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