饮用水源水中丙烯醛测定方法改进  

Improvement of Detecting Method for Acrolein in Drinking Water Sources

作　　者：周泓[1] 万群[1] 黄卫[1] 连花[1] 符哲[1] 

机构地区：[1]岳阳市环境监测中心,湖南岳阳414000

出　　处：《环境监测管理与技术》2011年第1期61-63,共3页The Administration and Technique of Environmental Monitoring

摘　　要：对饮用水源水中丙烯醛的气相色谱标准测定方法作了改进,由直接进样改为吹扫捕集进样,由极性色谱柱改为中等极性色谱柱。方法在0.010 mg/L^0.100 mg/L范围内线性良好,最低检出限和检测下限分别为0.000 5 mg/L和0.002 mg/L,水样平行测定的RSD为2.8%~5.2%,平均加标回收率为90.0%~100%,各项技术参数与EPA 8030A方法接近。改进后的方法解决了直接进样检测下限高于标准,以及纯丙烯醛标准物质不稳定、难于购买两大难题,能满足饮用水源水的监测要求。There had been some improvements for standard method to detect acrolein in drinking water sources.Sampling mode had been changed from direct injection into the purge and trap.GC column was replaced from polarity to medium polarity.Results showed that good linearity of method obtained in range from 0.010 mg/L to 0.100 mg/L,lower limit of detection 0.000 5 mg/L,detection limits 0.002 mg/L,RSDs of parallel samples between 2.8% and 5.2%,average spiked recoveries between 90.0% and 100%.Each technical parameters approached that of EPA method 8030A.Some difficult problems had been solved that poor detection limits from direct injection could not reach standard requirements,and unstable pure acrolein standard material,as well as difficult to get the standard material in market.The improved method met the need for drinking water sources monitoring.

关 键 词：丙烯醛 吹扫捕集 气相色谱法 饮用水源水 

分 类 号：O657.71[理学—分析化学]