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目的了解宁夏地区饮用水中邻苯二甲酸酯类(PAEs)物质的污染现状。方法于2009年4月,采集宁夏地区5个市(A～E市)共7个水厂的水源水、出厂水和管网末梢水以及4个县(F～I县)的农村窖水水样进行邻苯二甲酸二丁酯(DBP)、邻苯二甲酸二乙酯(DEP)、邻苯二甲酸二(2-乙基己基)酯(DEHP)和邻苯二甲酸二甲酯(DMP)含量的测定。结果宁夏地区城市饮用水中DBP、DEP、DMP和DEHP的检出范围分别为0.181～3.656、0.622～3.181、<0.03～3.673、<0.03～7.675μg/L。A市、B市和C市所采集的水样中主要的PAEs为DBP和DEP,其水源水、出厂水、管网末梢水中均有DBP被检出,且在水源水和管网末梢水中DBP含量较高,而在出厂水中其含量较低;DMP和DEHP在各种水样中也有被检出,但均未超标。D市水厂和E市水厂的水源水、出厂水、管网末梢水中均未检出DBP、DEP、DMP和DEHP。宁夏地区农村水窖水水样中主要的PAEs为DBP和DEHP,其含量范围分别为0.407～3.811和<0.03～2.522μg/L,且所有检测水样中均检出DBP。仅在F县的2个采样点水窖水中检测出DMP和DEP,含量范围分别为2.607～5.401和<0.06～0.759μg/L。结论宁夏地区饮用水中PAEs污染物目前以DBP和DEHP为主。
Objective To understand the status of phthalate esters (PAEs) in drinking water in Ningxia. Methods In April 2009, a total of seven water plants in five cities (A ~ E cities) of Ningxia were collected for water source, ex-factory water and pipe network water and rural cellar water for four counties (F ~ I counties) Samples of dibutyl phthalate (DBP), diethyl phthalate (DEP), di (2-ethylhexyl) phthalate (DEHP) and dimethyl phthalate ) Content of the determination. Results The detection ranges of DBP, DEP, DMP and DEHP in urban drinking water in Ningxia were 0.181 ~ 3.656 and 0.622 ~ 3.181, <0.03 ~ 3.673 and <0.03 ~ 7.675μg / L, respectively. The main PAEs in water samples collected by cities A, B and C are DBP and DEP, and DBP is detected in the water of source, ex-factory and end-of-pipe, and DBP Higher content, but lower content in the factory water; DMP and DEHP have also been detected in a variety of water samples, but did not exceed the standard. D, DEP, DMP and DEHP were not detected in the water source water, the ex-factory water and the pipe network water of the D City waterworks and the E City waterworks. The main PAEs in rural water and cellar water samples in Ningxia were DBP and DEHP, ranging from 0.407 to 3.811 and <0.03 to 2.522 μg / L, respectively, and DBP was detected in all tested water samples. DMP and DEP were only detected in the 2 sampling points of cellar water in F county, ranging from 2.607 to 5.401 and from 0.06 to 0.759 μg / L, respectively. Conclusions PAEs in drinking water in Ningxia are mainly dominated by DBP and DEHP.