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在郴州市某矿区布设20个地下水采样点,在2010年10月(枯水期)和2011年7月(丰水期)分别采集20个地下水水样,采用固相萃取(SPE)与气相色谱-质谱联用方法对水样中邻苯二甲酸二甲酯(DM P)、邻苯二甲酸二乙酯(DEP)、邻苯二甲酸二丁酯(DBP)、邻苯二甲酸丁苄酯(BBP)、邻苯二甲酸二(2-乙基己)酯(DEHP)、邻苯二甲酸二正辛酯(DOP)的浓度进行测定。检测结果表明,邻苯二甲酸酯(PAEs)在丰水期污染比枯水期污染严重。在《GB5749-2006生活饮用水卫生标准》中,DBP和DEHP的标准限值分别是3000ng/L和8000ng/L。丰水期有18个水样中的DBP超标,超标率90%,最大超标3.92倍;DEHP超标率5%,最大超标2.47倍。枯水期有2个水样中DBP超标,超标率10%,最大超标0.83倍。
Twenty groundwater sampling points were set up in a mining area in Chenzhou City. Twenty groundwater samples were collected in October 2010 (dry season) and July 2011 (wet season) respectively. Solid-phase extraction (SPE) and gas chromatography-mass spectrometry The combined method was applied to the determination of dimethyl phthalate (DMP), diethyl phthalate (DEP), dibutyl phthalate (DBP), butyl benzyl phthalate (BBP ), Di-2-ethylhexyl phthalate (DEHP) and di-n-octyl phthalate (DOP). Test results show that phthalates (PAEs) pollution in wet season more serious than the dry season. In “GB5749-2006 drinking water health standards,” the standard limits of DBP and DEHP are 3000ng / L and 8000ng / L respectively. During the wet season, DBP exceeded the standard in 18 water samples, exceeding the standard by 90% and exceeding the maximum by 3.92 times. The exceeding standard rate of DEHP was 5% and the maximum exceeded the standard by 2.47 times. During the dry season, DBP exceeded the standard in 2 water samples, exceeding the standard rate by 10% and exceeding the maximum by 0.83 times.