摘要
用气相色谱法测定环境空气和工业废气中的乙醛。以1%NaHSO_3溶液富集吸收,以PEG-20M为固定液,GCS-880-AW-DMCS为载体,用氢焰离子化检测器进行色谱测定。研究了采样方法、样品保存和最佳色谱条件等。方法的采样效率不小于99.0％;精密度和准确度均较高;方法的最低检出浓度为0.04mg/m^3。
Method of determining acetaldehyde in ambient air and industrial wastegas has been studied by using 1% NaHSO3 solution for concentrating acetaldehyde, PEG-20M as stationary liquid, GCS - 880 - AW - DWCS as supporter, and flame ionization detector for carrying out gas chromatographic determination. Sampling method, sample storage, optimum chromatographic condition test have also been studied. The results showed that the sampling efficiency of the method was not less than 99.0%, accuracy and precision were reliable. According to 100 litter sample volume calculation, the minimum detection concentration was 0.04mg/m3.
出处
《上海环境科学》
CAS
CSCD
1996年第12期29-32,共4页
Shanghai Environmental Sciences
基金
国家<大气污染物综合排放标准>中18项污染物配套标准分析方法项目
关键词
环境空气
工业废气
乙醛
气相色谱法
大气监测
Environmental monitoring Ambient air Industrial wastegas Acetaldehyde Gas chromatography
