大气中含氧挥发性有机物（OVOCs）的测量技术

含氧挥发性有机物（OVOCs）是光化学反应过程的中间产物，二次有机气溶胶的前体物，其本身也是有毒有害气体，在大气环境领域具有重要的研究意义。由于OVOCs中某些物种在环境大气中的浓度非常低（<0.1ppb），一般仪器检测限难以达到其浓度水平，且许多物种反应活性高、寿命短，因此，对OVOCs进行准确的定性和定量分析是具有挑战性的工作。作者归类介绍现有的主要分析测量方法，比较了各种分析方法优劣。

Methods for Measurement of Oxygenated Volatile Organic Compounds in the Atmosphere

The oxygenated volatile organic compounds (OVOCs) are important in tropospheric chemistry as they can influence the oxidative potential of the lower troposphere, and are precursors of the secondary organic aerosols, and have negative effects on human health. It’s very difficult to measure the ambient OVOCs due to their high reactivity and low concentration levels in the atmosphere. A number of methods have been used to quantify ambient OVOCs mixing ratios, and are discussed and compared.