环境大气中半/中等挥发性有机物(S/IVOCs)的测量技术进展

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Abstract This review summarizes the most important measurement techniques and their applications for semi-/intermediate-volatile organic compounds (S/IVOCs) in ambient air, focusing on techniques based on gas chromatography and chemical ionization mass spectrometry methods. S/IVOCs were initially measured by gas chromatography technologies, and the detection capability has been advanced along with developments of mass spectrometry technologies. Both offline and online gas chromatography methods can directly measure numerous non-polar S/IVOC compounds. However, it is still a challenge in traditional one-dimensional chromatography to separate and quantify myriads of organic compounds in ambient air, as the result of insufficient peak capacity and seriously overlapping of chromatographic peaks. Multi-dimensional separation systems, e.g. comprehensive two-dimensional gas chromatography, have been applied more widely for S/IVOCs measurements, which can achieve accurate and rapid separation of chemical components in complex chemical systems through orthogonal separation systems. On-line measurement techniques based on chemical ionization mass spectrometry have been developed and applied to S/IVOCs measurements in different atmospheric environments in recent years. These online chemical ionization mass spectrometers can provide high time resolution data for many S/IVOCs species, and facilitate to characterize rapid changes of S/IVOCs concentrations in the atmosphere, although there are still huge difficulties in identification of the species contributing to measured signals. Accurate measurements of more S/IVOCs components with high time resolution remain as the main goal for S/IVOCs measurements in ambient air.

Key words： ambient air semi-/intermediate-volatile organic compounds gas chromatography chemical ionization mass spectrometry

Received: 15 February 2020

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X511

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	TAN Xin
	YUAN Bin
	WANG Chao-min
	YE Chen-shuo
	ZHANG Shen-yang
	SHAO Min

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TAN Xin,YUAN Bin,WANG Chao-min等. Progress in measurements of semi-/intermediate-volatile organic compounds in ambient air[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(10): 4224-4236.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I10/4224

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