摘要
建立了气相色谱-质谱联用测定水中环氧氯丙烷的方法。用二氯甲烷萃取水样中的环氧氯丙烷,经色谱分离后采用质谱的选择离子检测(SIM)模式进行检测,提取特征离子进行定量。400mL水样中环氧氯丙烷的最低检测浓度可达0.1μg/L,标准曲线的线性相关系数r=0.9996,线性范围为0.05～2mg/L,样品平均加标回收率在85.8%～86.7%之间,相对标准偏差低于5.71%。方法简单、灵敏度高、准确、重现性好,适合水源水和饮用水中环氧氯丙烷的测定。
A method for the determination of epichlorohydrin in water by gas chromatography-mass spectrometry has been established. The epichlorohydrin in water was extracted by dichloride methane and separated through HP-5ms capillary column, then determined by MSD in SIM mode with the quantitative ion of 57. The linear correlation coefficient of epichlorohydrin was 0.999 6 in the linear range of solution 0.05-2 mg/L and the average rate of recovery was 85.8 %-86.7 %. The relative standard deviation was less than 5.71%（n=6） and limit of detection was 0.1 μg/L when 400 mL water sample was extracted. The method established in the present paper is suitable for the determination of epichlorohydrin in water for it＇s simpleness, precision, accuracy and sensitivity.
出处
《净水技术》
CAS
2008年第5期64-65,68,共3页
Water Purification Technology
关键词
气相色谱-质谱联用
环氧氯丙烷
水
gas chromatography - mass spectrometry epichlorohydrin water
