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

Hong Sheng Wang, Zhang Cheng, Peng Liang, Ding Ding Shao, Yuan Kang, Sheng Chun Wu, Chris K C WONG, Ming Hung WONG*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)900-906
Number of pages7
JournalEcotoxicology and Environmental Safety
Volume73
Issue number5
DOIs
Publication statusPublished - Jul 2010

Scopus Subject Areas

  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

User-Defined Keywords

  • Fishpond
  • PAHs
  • Source apportionment
  • Surface sediment

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