【摘要】 建立了在线凝胶色谱-气相色谱/质谱法测定水中二异丙基萘、邻苯二甲酸二丁酯和邻苯二甲酸(2-乙基)己酯的方法。样品经正己烷液-液萃取,浓缩定容,经凝胶渗透色谱柱净化后,用DB-5MS色谱柱(25 m×0.25 mm,0.25μm)分离,质谱检测,内标法定量。在0.5μg/L、1.5μg/L和3.0μg/L 3个加标浓度下,3种目标物的平均回收率在95.45%～107.80%之间,相对标准偏差在2.64%～6.26%之间,3种目标物的方法检出限分别为0.01μg/L、0.5μg/L和0.5μg/L。该方法操作简单,分析成本低,适合水中二异丙基萘、邻苯二甲酸二丁酯、邻苯二甲酸(2-乙基)己酯的检测。更多还原

【Abstract】 Online gel chromatography-gas chromatography-mass spectrometry(GPC-GC/MS) was established to determinate di-isopropylnaphthalene(DIPN), dibutylphthalate(DBP) and bis(2-ethylhexyl)phthalate(DEHP) in water. After extracted by n-hexane, followed by clean-up treatment with online GPC and separated by DB-5 MS column,the identification and quantification were performed by GC/MS in selected ion monitoring(SIM) mode. The average recoveries of 3 compounds were in the range of 95.45%-107.80%, with the relative standard deviation in the range of 2.64%-6.26% spiked at 0.5 μg/L, 1.5 μg/L and 3.0 μg/L. The limits of detection of 3 compounds of this method were 0.01 μg/L, 0.5 μg/L and 0.5 μg/L respectively. The developed method is convenient, time-saving, environmental-friendly, accurate and sensitive, which is suitable for determination of DIPN DBP and DEHP.更多还原