PM_(2.5)中水溶性离子采样及前处理注意事项的探讨  

Extraction and determination of water-soluble ions in PM_(2.5)

作　　者：杨懂艳[1] 刘保献[1] 魏强[1] 陈圆圆[1] 

机构地区：[1]北京市环境保护监测中心,北京100048

出　　处：《化学研究与应用》2015年第9期1398-1402,共5页Chemical Research and Application

基　　金：北京市科委项目(Z121100000312035)资助

摘　　要：本文采用四通道采样器,使用Teflon和石英膜对环境空气中的PM2.5样品进行采样,并使用超声振荡-离子色谱法对其中的水溶性离子进行分析。分析结果表明,石英膜和Teflon膜本底结果差异性不大,但石英膜本底离子浓度范围相对较宽。Teflon膜适合于PM2.5质量浓度的测量,石英滤膜更适合于冬季PM2.5水溶性离子的检测分析。Four channel samplers with Quartz and Teflon membranes were used for sampling PM2. 5 and Water-soluble ions were ana-lyzed. The results showed that,there were no obvious differences of background ion concentration between Teflon and Quartz mem-branes,but Quartz showed a relatively wide range concentration of ions. The results also indicated Teflon membranes would be more adapted for the determination of the weight of PM2. 5 ,and Quartz would be more suitable for the determination of water soluble ions in winter.

关 键 词：PM2.5 水溶性离子 超声振荡 离子色谱法 

分 类 号：O659.36[理学—分析化学]