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| Ecological and health risk assessment of polycyclic aromatic hydrocarbons in a typical channel catfish (Ictalurus punctatus) breeding area in Jiangsu, China |
| Received:February 22, 2021 |
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| KeyWord:Jiangsu;channel catfish;residue;polycyclic aromatic hydrocarbons;health risk assessment;ecological risk |
| Author Name | Affiliation | E-mail | | XU Zhihua | Fresh Water Fisheries Research Institute of Jiangsu Province, Key Laboratory for Fishery Product Quality and Safety of Jiangsu, Nanjing 210017, China
Fishery Analysis & Testing Center of Jiangsu Province/Quality Control & Inspection Center for Domestic Fishery Products, Ministry of Agricultural and Rural Affairs(Nanjing), Nanjing 210017, China | | | LIU Yi | Fresh Water Fisheries Research Institute of Jiangsu Province, Key Laboratory for Fishery Product Quality and Safety of Jiangsu, Nanjing 210017, China
Fishery Analysis & Testing Center of Jiangsu Province/Quality Control & Inspection Center for Domestic Fishery Products, Ministry of Agricultural and Rural Affairs(Nanjing), Nanjing 210017, China | | | LIU Chongwan | Fresh Water Fisheries Research Institute of Jiangsu Province, Key Laboratory for Fishery Product Quality and Safety of Jiangsu, Nanjing 210017, China
Fishery Analysis & Testing Center of Jiangsu Province/Quality Control & Inspection Center for Domestic Fishery Products, Ministry of Agricultural and Rural Affairs(Nanjing), Nanjing 210017, China | | | REN Di | Fresh Water Fisheries Research Institute of Jiangsu Province, Key Laboratory for Fishery Product Quality and Safety of Jiangsu, Nanjing 210017, China
Fishery Analysis & Testing Center of Jiangsu Province/Quality Control & Inspection Center for Domestic Fishery Products, Ministry of Agricultural and Rural Affairs(Nanjing), Nanjing 210017, China | | | GENG Xuebing | Fresh Water Fisheries Research Institute of Jiangsu Province, Key Laboratory for Fishery Product Quality and Safety of Jiangsu, Nanjing 210017, China
Fishery Analysis & Testing Center of Jiangsu Province/Quality Control & Inspection Center for Domestic Fishery Products, Ministry of Agricultural and Rural Affairs(Nanjing), Nanjing 210017, China | | | GE Xiaoqin | Fresh Water Fisheries Research Institute of Jiangsu Province, Key Laboratory for Fishery Product Quality and Safety of Jiangsu, Nanjing 210017, China
Fishery Analysis & Testing Center of Jiangsu Province/Quality Control & Inspection Center for Domestic Fishery Products, Ministry of Agricultural and Rural Affairs(Nanjing), Nanjing 210017, China | | | ZHU Xiaohua | Fresh Water Fisheries Research Institute of Jiangsu Province, Key Laboratory for Fishery Product Quality and Safety of Jiangsu, Nanjing 210017, China
Fishery Analysis & Testing Center of Jiangsu Province/Quality Control & Inspection Center for Domestic Fishery Products, Ministry of Agricultural and Rural Affairs(Nanjing), Nanjing 210017, China | xhz824@sina.com |
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| Abstract: |
| The present study evaluated the residual levels of polycyclic aromatic hydrocarbons(PAHs) and their associated ecological and health risks in a typical channel catfish(Ictalurus punctatus) breeding area in Jiangsu Province. Gas chromatography-mass spectrometry (GC-MS) was used to track and monitor the PAHs residues in the fish bodies, pond water, and sediments from the main breeding ponds according to their growth stage in Jiangsu. The Kalf risk quotient(RQ) was used to assess the ecological risk of pond water, while sediment quality standards(SQGs) were used to assess the ecological risk of sediments. The health risk assessment model recommended by the United States Environmental Protection Agency(USEPA) was used to evaluate the health risk associated with eating channel catfish. The results showed that the total detection rate of 16 PAHs was 100% in fish bodies, pond water, and sediments. However, no carcinogenic substances, including benzo[a]pyrene, were detected. The PAHs monomers Nap, Phe, BaA, Pyr, Chr, Flu, and Ace were commonly detected in fish bodies, pond water, and sediments, and Phe was detected in all matrixes with a detection rate of 100%. The detection rate of Nap was more than 80%. In terms of structural composition of monomers, catfish and pond water normally contain compounds that have 2 to 4 rings, while the structure of monomers in sediments was more complex, with 3 to 4 rings being more dominant. The total PAHs content in the fish bodies(based on wet weight) ranged from 11.75 to 60.02 μg·kg-1. In addition, the concentration associated with the risk of eating channel catfish for adults was found to be 2.25×10-9~5.80×10-7 a-1. The carcinogenic risk was found to be far less than the maximum acceptable level, being at a controllable risk level. As for the ecological risk assessment of pond water, the concentration in pond water ranged from 0.03 to 0.46 μg·L-1. The overall ecological risk was low, but the individual Nap, Phe, Ace, Pyr, and Fla concentrations in some ponds were found to have medium risk levels. The impact of other monomers on the ecosystem was negligible. According to the ecological risk assessment of pond sediments, the concentration in sediments(calculated by dry weight) was 24.48~145.04 μg·kg-1. In general, the detected PAHs concentrations would not have significant side effects on organisms. |
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