摘要
采用预浓缩系统与GC MS联用,建立了环境空气中痕量挥发性有机硫的分析方法,该法用苏玛罐或Tedlar袋采集空气样品在预浓缩系统中经液氮于-160℃冷冻浓缩后,进入GC MS进行分析。甲硫醇、乙硫醇、甲硫醚、乙硫醚、二甲二硫的最低检出限分别为2 0、1 0、1 0、1 0、0 5μg m3。经6次的重复测定,其相对标准偏差小于9 0%。该方法已用于环境空气的测定,取得了令人满意的结果。
Preconcentration techniques combined gas chromatography and mass spectrometry (GC/MS) was evaluated for determination of 6 kinds of trace volatile organic sulfur compounds in environmental air。Using preconcentration techniques , the range of the lowest detection limits for MSH,ESH,DMS,DES,DMDS was 2.0,1.0,1.0,1.0,0.5μg/m^3, relative standard deviations (n=6)were generly lower than 9.0%.The application of the method to determination of volatile organic sulfur compounds, in real sample tested by analyzing environmental air samples,satisfactory results were obtained.
出处
《中国环境监测》
CAS
CSCD
北大核心
2004年第2期30-32,共3页
Environmental Monitoring in China
关键词
预浓缩系统
气-质联用
苏玛罐
有机硫
环境空气
preconcentration techniques
GC/MS
summa canister
organic sulfur
environmental air
