水中邻苯二甲酸酯类化合物的固相膜萃取-气相质谱测定法

Determination of phthalates in water by solid phase membrane extraction-gas chromatography-mass spectrometry

目的建立饮用水中6种邻苯二甲酸酯类化合物（PAEs）的检测方法，并用于生活饮用水中邻苯二甲酸酯的污染监测。方法水样经装有C18膜的全自动固相萃取系统富集，气相色谱-质谱（GC—MS）检测，以选择性离子监测（SIM）模式进行定性、定量。结果6种目标化合物在0．05～10．0mg／L的浓度范围内具有良好的线性关系，r〉0．997。该方法最低检出限在0．1～0．9μg／L，方法平均回收率在73．0％～105．5％，RSD为2．3％～12．9％。结论该法快速，灵敏，准确，适用于各类生活饮用水中PAEs的监测。

[Objective]To establish a method for determination of 6 kinds of phthalates in drinking water, and apply it for monitoring of phthalate polluted drinking water. [Methods]Using automatic solid phase extraction system with C18 for the enrichment of the water samples, phthalates were detected by gas chromatography-mass spectrometry （GC-MS）, Quantitative analysis was done by external standard method in selective ion monitoring mode （SIM）. [Results]The calibration curve of 6 phthalates were linear within the range of 0.05-10.0 mg/L and the regression coefficients r〉0.997. The limit of determination was 0.1-0.9 μg/L. The average recovery ranged from 72.6%-105.2% and the t/SD were 4.14%-12.9%.[Conclusion]The method is rapid, sensitive and accurate, and suitable for determining PAEs in drinking water.