合肥市水源水与饮用水中邻苯二甲酸酯类和双酚类化合物的污染现状
Investigation of Pollution of Phthalate Esters and Bisphenols in Source Water and Drinking Water in Hefei City, China
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摘要:
目的 了解合肥市两水厂水源水与饮用水中7种邻苯二甲酸酯类（PAEs）及3种双酚类（BPs）化合物的污染水平及其水期分布特征。
方法 选择10个具有代表性的采样点，采集合肥市A、B两水厂的水源水、出厂水及管网末梢水，分别采用固相萃取-气相色谱质谱法测定7种PAEs，固相萃取-超高效液相色谱-串联质谱法检测3种BPs。
结果 邻苯二甲酸丁基苄基酯、邻苯二甲酸二（2-丁氧基）乙酯、双酚B及双酚F在所有水样中均未被检出。两水厂不同水期∑ PAEs和双酚A（BPA）检出含量分别为2.73～8.14 μg/L、9.57～15.70 ng/L（水源水），1.91～5.06 μg/L、nd～2.74 ng/L（出厂水）和1.12～6.59μg/L、1.03～3.01 ng/L（管网末梢水）。污染水平呈不同的水期分布特征，∑ PAEs为丰水期 > 枯水期 > 平水期，BPA为枯水期 > 平水期 > 丰水期。两水厂的水处理工艺对PAEs及BPA的清除无统计学差异。
结论 合肥市水源与饮用水不同程度地受到PAEs和BPA的污染；与国内外其他地区相比，污染处于相对较低水平。
Abstract:Objective To investigate the seasonal variations of seven phthalate esters (PAEs) and three bisphenols (BPs) in source water and drinking water from two waterworks in Hefei City in three different water periods.
Methods Ten sampling sites were selected representing the source water and drinking water from A waterworks and B waterworks. Samples were determined by gas chromatography-mass spectrometry for seven PAEs and ultra performance liquid chromatography-tandem mass spectrometry for three BPs after solid phase extraction.
Results Benzyl butyl phthalate, bis (2-n-butoxyethyl) phthalate, bisphenol B, and bisphenol F were not detected in all water samples. The concentrations of ∑ PAEs detected in source water, finished water, and tap water were in the range of 2.73-8.14μg/L, 1.91-5.06μg/L, and 1.12-6.59μg/L in three different water periods of the two waterworks, respectively, while the levels of bisphenol A (BPA) ranged from 9.57 to 15.70ng/L, nd to 2.74ng/L, and 1.03 to 3.01ng/L, respectively. The concentrations of ∑ PAEs in different water periods were ranked from high to low as wet season > dry season > level season, while dry season > level season > wet season for BPA. No significant differences in PAEs and BPA were found between A and B waterworks.
Conclusion The source and drinking water in Hefei are polluted by PAEs and BPA to different degrees, but the level of pollution is lower than that in other regions as previously reported.
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