【摘要】 甲醛是一种活泼的极性羰基化合物,往往采用泵采样方式进行采样分析。本文研究了采用SUMMA罐采样,三级冷阱预浓缩,GC/MS分析室内空气中甲醛的方法,并考察了该方法的检出下限、准确度、精密度、线性响应范围等方法特性。结果表明室内空气中甲醛的罐采样GC/MS分析方法准确可靠,可用于室内环境检测。更多还原

【Abstract】 Formaldehyde is an active polar compound,which is generally collected by pumps to analysis.A new method that formaldehyde in air is collected in canister,preconcentrated through 3-stage traps and analyzed by GC/MS is introduced in this paper.Characters such as detection limit,veracity,stability and region of linear response are investigated.Those results indicate that this method is precision and stable,which can be used to determine the concentration of formaldehyde in indoor air.更多还原