| DONG Qiaoxiang,HUANG Hong,HUANG Changjiang. 2007. Polycyclic aromatic hydrocarbons in surface sediments of the Zhelin Bay in the South China Sea. Acta Oceanologica Sinica, (2):123－132 |
| Polycyclic aromatic hydrocarbons in surface sediments of the Zhelin Bay in the South China Sea |
| Polycyclic aromatic hydrocarbons in surface sediments of the Zhelin Bay in the South China Sea |
| Received:April 06, 2006 Revised:August 21, 2006 |
| DOI： |
| Key words:polycyclic aromatic hydrocarbons (PAHs) surface sediment Zhelin Bay Guangdong China |
| 中文关键词: polycyclic aromatic hydrocarbons (PAHs) surface sediment Zhelin Bay Guangdong China |
| 基金项目: |
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| Abstract: |
| This study examined the concentrations of polycyclic aromatic hydrocarbons (PAHs) in surface sediments collected in July 2004 from eight stations in the Zhelin Bay, one of the most important bays for large-scale mariculture in Guangdong Province.Thirteen individual parent PAH compounds were identified using high performance liquid chromatography with UV detection.The overall average concentration of total PAHs was 477.0 ng/g, ranging from 146.1 to 928.8 ng/g.Low molecular mass PAHs with two to three rings (e.g., acenaphthene) were dominant in each sample.The PAH concentration varied among sampling stations, with the highest concentration observed at bay outlets and the lowest found at stations outside the bay.Ratios of low to high molecular mass PAHs and fluoranthene to pyrene were used to determine the origin of PAHs, and results indicated mainly petroleum-derived contamination.Compared with other bays and harbors around the world, the total concentrations of PAHs in surface sediments at the Zhelin Bay are moderate, but this does not exclude the possibility of potential impact on human consumers because some strong carcinogenic PAHs with high molecular mass were found at the station with a nearby caged-fish and oyster farm.Long-term monitoring of PAH contamination in the Zhelin Bay is recommended to reduce the potential toxicological effects on aquatic organisms and humans. |
| 中文摘要: |
| This study examined the concentrations of polycyclic aromatic hydrocarbons (PAHs) in surface sediments collected in July 2004 from eight stations in the Zhelin Bay, one of the most important bays for large-scale mariculture in Guangdong Province.Thirteen individual parent PAH compounds were identified using high performance liquid chromatography with UV detection.The overall average concentration of total PAHs was 477.0 ng/g, ranging from 146.1 to 928.8 ng/g.Low molecular mass PAHs with two to three rings (e.g., acenaphthene) were dominant in each sample.The PAH concentration varied among sampling stations, with the highest concentration observed at bay outlets and the lowest found at stations outside the bay.Ratios of low to high molecular mass PAHs and fluoranthene to pyrene were used to determine the origin of PAHs, and results indicated mainly petroleum-derived contamination.Compared with other bays and harbors around the world, the total concentrations of PAHs in surface sediments at the Zhelin Bay are moderate, but this does not exclude the possibility of potential impact on human consumers because some strong carcinogenic PAHs with high molecular mass were found at the station with a nearby caged-fish and oyster farm.Long-term monitoring of PAH contamination in the Zhelin Bay is recommended to reduce the potential toxicological effects on aquatic organisms and humans. |
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