摘要
采用便携式气相色谱／质谱联用热脱附法直接测定环境空气中的挥发性有机物，优化了试验条件。方法在5× 10-9-100×10-9范围内线性良好，39种化合物的检出限为1．1μg/m3～19μg/m3，标准气体平行测定的RSD≤11．O％，回收率在80％～120％之间。
Volatile organic compounds in ambient air were directly determined by thermal desorption-porta- ble gas chromatography-mass spectrometry. By optimizing test condition, the results showed good linearity ran- ging from 5 × 10-9 to 100 × 10 -9 ; detection limits of 39 compounds between 1.1 μg/m3 and 19 μg/m3 ; RSD of parallel standard air ≤11.0% ; and spiked recoveries between 80% and 120%.
出处
《环境监测管理与技术》
2010年第2期48-50,54,共4页
The Administration and Technique of Environmental Monitoring
关键词
挥发性有机物
便携式气相色谱/质谱联用仪
热脱附
环境空气
Volatile organic compounds
Portable gas chromatography-mass spectrometer
Thermal desorp- tion
Ambient air
