大气污染物中2-甲基丁四醇硫酸酯的质谱解析
Mass Spectrometry of 2-Methyltetrol-oganosulfates in Atmospheric Pollutant
杨颜 1汪午2
作者信息
- 1. 安徽省巢湖市环境保护监测站，安徽巢湖238000
- 2. 上海大学环境污染与健康研究所，上海200444
- 折叠
摘要
利用液相色谱/负离子电喷雾质谱( LC/(-) ESI-MS)技术，对受到人类活动影响的上海崇明东平国家森林公园的大气样品进行了研究。成功分离到异戊二烯主要的光氧化产物，非对映异构体2-甲基丁四醇和大气中的SO2结合生成的有机硫酸酯类化合物。采用质谱解析法鉴定了2种构型( erythro-、threo-)-2-甲基丁四醇硫酸酯的结构。
Abstract
The liquid chromatography/ negative ion electrospray ionization mass spectrometry (LC/ ( - )ESI - MS) was used to analyze an aerosol sample collected from Dongping National Forest Park in Chongming influenced by anthropogenic activities. Diastereoisomeric organosulfates formed from the chemical reaction of SO2 and 2 - methyltetrols which are the major markers of isoprene secondary organic aerosol were found and separated. Taking the previous information into account,erythro - and threo - 2 - methyltetrol organosulfates were characterized based on mass spectral fragmentation.
关键词
有机硫酸酯/2-甲基丁四醇/液相色谱/负离子电喷雾质谱(/LC/(-)/ESI-MS)Key words
Organo-sulfate/2-methyltetrols/Liquid chromatography/negative ion electrospray ionization mass spectrometry(LC/(-)ESI-MS)引用本文复制引用
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据