http://dx.doi.org/10.1016/j.ecoenv.2010.04.010">
 

Document Type

Journal Article

Department/Unit

Department of Biology

Title

Characterization of PAHs in surface sediments of aquaculture farms around the Pearl River Delta

Language

English

Abstract

The distribution and source apportionment of polycyclic aromatic hydrocarbons (PAHs) in surface sediments of freshwater fishponds and mariculture rafts around the Pearl River Delta (PRD) were investigated. Twenty-one sample sites were chosen, consisting of fifteen freshwater fishponds and six mariculture rafts. The total PAH (ΣPAH) concentrations measured in all the sediment samples ranged from 52.7 to 717ngg-1, with mean of 184ngg-1. The marine sediment samples contained higher levels of ΣPAH, high molecular weight (HMW) PAHs and carcinogenic PAHs than freshwater sediments (p<0.05). Principal component analysis/multiple linear regression analysis (PCA/MLRA) indicated that the source of PAHs in freshwater sediment was mainly derived from mixed combustion of coal, wood, and vehicle emission (66.2%). Vehicle emissions and coal combustion were the main sources (52.5 and 47.5% of ΣPAH, respectively) of PAHs contaminated in the marine sediments. The present study indicated that surface sediments of freshwater fishponds and mariculture rafts around the PRD were grossly contaminated by PAHs derived from combustion sources. © 2010 Elsevier Inc.

Keywords

Fishpond, PAHs, Source apportionment, Surface sediment

Publication Date

2010

Source Publication Title

Ecotoxicology and Environmental Safety

Volume

73

Issue

5

Start Page

900

End Page

906

Publisher

Elsevier

ISSN (print)

01476513

ISSN (electronic)

10902414

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