预浓缩与GC-MS联用分析垃圾填埋场恶臭气体

摘要

Preconcenlraliuii techniques combined gas chromatograph-mass spectrometer was evaluated for landfill gas. Usingrnpreconcentralion techniques, the range of the lowest detection limits for landfill gas wers lower than 3. 0 X 10~3 mg/m3 , relativernstandard deviations (n =6) were generally lower than 10%. The method was applied to determine real sample from Xi'anrnJiangcungou landfill, satisfactory results were obtained.%采用预浓缩与气相色谱-质谱联用,建立了垃圾填埋场几种恶臭气体的分析方法.该法用SUMMA罐采集垃圾填埋场臭气,经预浓缩系统冷凝浓缩后,用GC-MS分析测定.几种臭气的检出限均低于3.0×10-3mg/m3,经6次重复测定,其相对标准偏差低于10％.该法已用于西安市江村沟拉圾填埋场臭气的采样分析.该法的应用增强了西安市对臭气的监测分析能力.