环境空气中挥发性有机物监测技术研究进展

Research Progress of Monitoring Techniques for Volatile Organic Compounds in ambient air

挥发性有机物(VOCs)是大气中重要的环境污染物,具有致癌、致畸、致突变的危害,是臭氧和PM2.5的最重要前体物之一,对于挥发性有机物的监测具有重要意义。重点介绍了离线监测的采样技术以及气相色谱、质谱等联用技术,在线监测的质子转移反应质谱法和飞行时间质谱法。阐述了各种采样方法及检测技术的优势与不足。

Volatile organic compounds （VOCs） are an important environmental pollutant in the atmosphere. They are carcinogenic, teratogenic, and mutagenic. They are also one of the most important precursors of ozone and PM2.5. The monitoring of organic matter is of great significance. The off-line monitoring sampling tech- niques, gas chromatography, mass spectrometry, etc., on-line monitoring of proton transfer reaction mass spectrometry, and time-of-flight mass spectrometry were highlighted. Analyze the advantages and disadvantages of various sampling methods and detection technologies.