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目的 了解邻苯二甲酸酯类化合物对城镇供水的污染情况以及现行水处理工艺对该类物质的净化效果。方法 采用处理前、后对照的方法 ,对源水和出厂水进行检测。色谱分析测试邻苯二甲酸酯类化合物五只异构体。结果 出厂水中邻苯二甲酸二丁酯检出率 10 0 % ,最高含量达 76 μg/ L。邻苯二甲酸二 (2 -乙基己基 )酯检出率 5 0 % ,最高含量 17μg/ L;邻苯二甲酸二甲酯、邻苯二甲酸二乙酯和邻苯二甲酸丁基苄酯三只异构体均未测出。源水中邻苯二甲酸酯类化合物的平均含量 (G)为 19.74μ/ L,出厂水 18.35 μ/ L,两者差别无显著意义 (P>0 .0 5 )。结论 城镇供水中的邻苯二甲酸酯类化合物污染以邻苯二甲酸二丁酯和邻苯二甲酸二 (2 -乙基己基 )酯为多见。城镇水厂现行水处理工艺对邻苯二甲酸酯类化合物净化效果不佳 ,去除该类化合物的水处理工艺有待进一步研究和探讨
Objective To understand the pollution of phthalic acid esters to urban water supply and the purification effect of these substances by current water treatment process. Methods Before and after treatment, the source water and the ex-factory water were tested. Chromatographic analysis of five isomers of phthalates. Results The detection rate of dibutyl phthalate in the factory water was 100% with a maximum of 76 μg / L. Di (2 - ethylhexyl) phthalate detection rate of 50%, the maximum content of 17μg / L; dimethyl phthalate, diethyl phthalate and butyl benzyl phthalate None of the three isomers was detected. The average content of phthalate esters in source water (G) was 19.74μ / L, and the ex-factory water was 18.35 μ / L, with no significant difference (P> 0.05). Conclusions Pollution of phthalates in urban water supply is more common with dibutyl phthalate and di (2 - ethylhexyl) phthalate. The current water treatment process in urban waterworks has poor purification effect on phthalate compounds. The water treatment process for removing these compounds needs to be further studied and discussed