Abstract: With 10 fish species in Xiamen area as the research objects, the residue dose and characteristics of organochlorine pesticides (OCPs) in fish were analyzed by QuEChERS-gas chromatography, and their possible health risks were discussed. Fish muscles were extracted with hexane and acetone (1∶1) homogenate and purified with 400 mg PSA, 150 mg C18 and 900 mg magnesium sulfate, followed by GC-ECD and GC-MS analysis. The results showed that the calibration curves were linear in the range of 1-50 ìg/L for each OCP, with correlation coefficients all above 0.998 8, the average recoveries of 83.2%-103.5%, the RSDs of 4.8-12.1%, and the detection limits of 0.01-0.09 μg/kg. Meanwhile, OCPs were detected in all 10 fish species, with the concentrations ranging from 5.532 μg/kg to 22.174 μg/kg. The concentrations of OCPs in Trichiurus lepturus and Ilisha elongata Bennett were the highest, reaching 22.174 μg/kg and 19.910 μg/kg, respectively. P′P′-DDD, P′P′-DDE and â-HCH were the main pollutants. The contents and composition of the isomers indicated that most of the OCPs in Xiamen area were come from early pesticide residues, but there was a suspected contamination of DDT caused by the degradation of dicofol. However, the EDI was far lower than daily food intake from the national standard. Therefore, QuEChERS can be applied to the detection of OCPs in marine fish, and the water environment in Xiamen sea area has been less polluted by OCPs recently, indicating low risk of OCPs by fish consumption.
毕思远,曹建涛,李保玲,等. QuEChERS-气相色谱分析厦门海域鱼体中有机氯类农药残留特征及风险评价[J]. 食品与发酵工业, 2019, 45(21): 229-235.
BI Siyuan,CAO Jiantao,LI Baoling,et al. Determination and risk assessment of organochlorine pesticides in marine fishfrom Xiamen sea area by QuEChERS combined with gas chromatography[J]. Food and Fermentation Industries, 2019, 45(21): 229-235.
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2019, Vol. 45 
