养殖鱼体邻苯二甲酸酯含量与分布特征

目的调查珠江三角洲及香港地区的养殖池塘3种淡水养殖鱼类(草鱼、鲫鱼和罗非鱼)体内6种邻苯二甲酸酯(PAEs)的含量与分布特征。方法于2005年11月在珠江三角洲和香港地区采集草鱼、鲫鱼、罗非鱼,鱼肉样品经冻干处理,索氏抽提,氧化铝-硅胶柱净化,气相色谱-氢火焰离子化检测器(GC-FID)检测。结果珠江三角洲地区鲫鱼、草鱼、罗非鱼体内邻苯二甲酸二异辛酯(DEHP)含量分别高达16.10、19.81和11.03 mg/kg(体重,干重);邻苯二甲酸二正丁酯(DBP)和邻苯二甲酸丁辛酯(BOP)在3种鱼类体内的含量在3～10 mg/kg之间。邻苯二甲酸二甲酯(DMP)的含量最低(0.54 mg/kg)。香港地区鲫鱼、草鱼、罗非鱼体内DEHP含量高达35.97、37.98、26.12 mg/kg,而DMP和DEP含量较低。结论养殖鱼类受PAEs的污染情况随地域的不同有较大差异,来自香港地区的养殖鱼类样品中6种PAEs含量高于珠江三角洲地区样品。

Analysis of PAEs in Muscle Tissue of Freshwater Fish from Fishponds in Pearl River Delta

Objective To investigate phthalate esters in the muscle tissues of fresh water fish in fishponds in Pearl River Delta and Hong Kong,China,Nov,2005.Methods The samples from Pearl River Delta and Hong Kong,China,were analyzed by capillary gas chromatography with FID detector through the procedure of freeze-dried,soxhlet extraction,decontaminating with alumina-silica gel columniation in Nov,2005.Results The concentration of six sorts of PAEs was detected.The concentration of DEHP was 16.10 mg/kg(dry weight),19.81 mg/kg and 11.03 mg/kg in crucian carp,grass carp and tilapia from Pearl River Delta,while being 35.97,37.98 and 26.12 mg/kg for the same species from HK respectively,but the DMP showed the lowest value,only about 0.54 mg/kg.The concentration of DBP and BOP ranged from 3 to 10 mg/kg.Conclusion The fresh water fish from Pearl River Delta were polluted by DEHP,DBP and BOP significantly and the level of pollution is different among various areas.