环境样品中邻苯二甲酸酯类物质的测定与分析

Determination of Phthalates in Environmental Samples

目的了解环境中邻苯二甲酸酯类(phthalates)的污染情况。方法采集上海及周边杭州湾和运河地区的水样、土样、底泥及鱼、虾、蟹等水生生物样品,采用反相高效液相色谱法测定了其中邻苯二甲酸二乙酯(DEP)、邻苯二甲酸二丁酯(DBP)和邻苯二甲酸-2-乙基己基酯(DEHP)的含量。结果phthalates在水中的含量<土壤<底泥<水生生物;不同水生物对phthalates的生物富集程度不同,泥螺和虾较易富集DEP和DBP,而鱼类和河蚌较易富集DEHP。结合国内资料,推算60 kg成年人每日摄入量为3.4 mg,低于人每日安全摄入量。结论上述地区普遍存在phthalates的污染。

Objective To understand the phthalates pollution in the environment. Methods The contents of DEP, DBP and DEHP in various environmental samples such as surface water, soil, sediments, fishes, shrimps and crabs collected from Shanghai, Hangzhou Bay, the Grand Canal and surrounding area were determined by reverse phase high performance liquid chro-matography.Results The contents of phthalates in the samples of soil, sediments and aquatic organisms were arranged in the following order: water< soil< sediments< aquatic organisms. The capabilities of bioconcentration of phthalates were different among various kind of aquatic organisms, stronger for DEP and DBP among field snails and shrimps and stronger for DEHP among fishes and clams. Based on our results and other domestic data, the daily intake of phthalates for 60 kg-weighted adults was estimated as 3.4 mg, which was lower than the acceptable daily intake of 0.15 mg/kg body weight. Conclusion The pollution of phthalates in environment were widespread in above districts.