高效液相色谱法测定水中邻苯二甲酸酯类物质

Determination of Phthalate Esters in Water by High Performance Liquid Chromatography

建立了一种用高效液相色谱技术测定水中4种邻苯二甲酸酯类化合物的分析方法,确定了最佳的色谱条件：采用梯度淋洗,流动相为水、乙腈,分析时间为16 min。采用标准溶液系列进行分析,绘制工作曲线,并计算回归系数。进行了回收率、检出限实验,当取样量为1L时,4种邻苯二甲酸酯类回收率均在85%以上,RSD〈1%。在现场进行了实际应用,结果表明：水源原水以及沿线的干渠中,检测到邻苯二甲酸二丁酯及邻苯二甲酸二（2-乙基己基）酯,其平均浓度范围为0.4-1.8μg/L,均小于GB 3838—2002《地表水环境质量标准》中的限值。出厂水未检出邻苯二甲酸酯类物质。

An analytical method for detecting phthalate esters in water by high performance liquid chromatography is developed in this article,which determines the best conditions for chromatography.With gradient elution,mobile phase is water and acetoniirile and the analysis time is 16 min.With analyzing standard sample series,working curve and regression coefficient are calculated.With sample quantity of 1L,the recovery rates of 4 kinds of phthalate esters are above 85%and the RSD is less than 1%.In practice,the mean concentration of DEHP in source of water and canal is between 0.4μg/L and1.8μg/L,all less than the limit value in 'Environment Quality Standards for Surface Water'(GB 3838—2002).Phthalate esters are not detected in discharge water.