预浓缩系统与GC-MS联用法分析环境空气中的三甲胺

Deternimation of trimethylamine in environment air by gas-chromatography amd mass spectrometry coupled preconcentration techniques

Trimethylamine in environment air is concentrated to deactivated SUMMA canister by three-grade cold trap,then analysed by GC-MS.The operation of the method is easy,and no pre-procession.The maximal injection-volume is up to 2L.The analysis method is adopted to the SIM method of GC-MS.The precision、sensitivity and accuracy of the method is good,the MDL of the method is 1.6×10-2mg/m3.

Trimethylamine in environmem air is concentrated to deactivated SUMMA canister by three -grade cold trap, then analysed by GC - MS. The operation of the method is easy, and no pre - procession. The maximal injection - volume is up to 2L. The analysis method is adopted to the SIM method of GC - MS. The precision.sensitivity and accuracy of the method is good,the MDL of the method is 1.6 × 10^ -2mg/m^3.