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| Content and Risk Assessment of Chromium in Fishes from Taihu Lake |
| Received:January 21, 2015 |
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| KeyWord:chromium;Taihu Lake;fish;safety assessment |
| Author Name | Affiliation | E-mail | | ZHANG Cong | College of Fishery, Nanjing Agricultural University, Wuxi 214081, China | | | SONG Chao | Key Laboratory of Ecological Environment and Resources of Inland Fisheries Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China | | | QIU Li-ping | Key Laboratory of Ecological Environment and Resources of Inland Fisheries Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China | | | HU Geng-dong | Key Laboratory of Ecological Environment and Resources of Inland Fisheries Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China | | | CHEN Jia-zhang | College of Fishery, Nanjing Agricultural University, Wuxi 214081, China
Key Laboratory of Ecological Environment and Resources of Inland Fisheries Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China | chenjz@ffrc.cn |
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| Abstract: |
| The presence of heavy metals in aquatic products has raised more and more public concerns. Heavy metals may pose a threat to human health through food chain. In this investigation, 401 fish samples were collected from Taihu Lake, which consisted of 315 omnivorous-samples, 49 carnivorous-samples and 37 herbivorous-samples, belonging to 22 species, to study the ecological risk of heavy metal chromium(Cr). The concentrations of chromium in the fish muscle samples were determined using atomic absorption spectrophotometry(AAS), and the pollution and health risk of Cr in fish were then assessed. The content of Cr in fish samples ranged from ND(no detection) to 5.21 mg·kg-1. There were 12 samples at heavy pollution levels. Omnivorous fish contained significantly higher Cr than herbivorous fish did, but Cr in carnivorous fish was not significantly different from that in other two groups. There were 7.48% fish samples whose Cr concentrations exceeded the provisional tolerable weekly intake(PTWI), indicating that consuming fish from the Taihu Lake may cause health problems for human beings. |
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