城市大气中等挥发性有机物采样分析及外场观测研究进展  

Research progress on sampling analysis and field observation of intermediate volatility organic compounds in the urban atmosphere

作　　者：郝岩岩 徐瑞欣 孔蒙迪 张瑞芹[1,2] HAO Yanyan;XU Ruixin;KONG Mengdi;ZHANG Ruiqin(College of Ecology and Environment,Zhengzhou University,Zhengzhou,450001,China;Institute of Environmental Science,Zhengzhou University,Zhengzhou,450001,China)

机构地区：[1]郑州大学生态与环境学院,郑州450001 [2]郑州大学环境科学研究院,郑州450001

出　　处：《环境化学》2025年第1期109-120,共12页Environmental Chemistry

基　　金：郑州市PM_(2.5)与O_(3)协同控制监测项目(20220347A)资助。

摘　　要：中等挥发性有机物(IVOCs)是大气中的重要有机污染物之一.与大气中挥发性有机物(VOCs)和颗粒物等污染物的采样分析研究相比,目前针对IVOCs的研究相对薄弱.因此,IVOCs的深入研究对于大气治理具有重要意义.详细介绍了城市大气环境中IVOCs采样与分析技术和外场观测等,重点详述了IVOCs定量方法的研究进展.研究发现,采样分析技术的选择取决于大气中IVOCs的化学结构、传输性及其反应性质.与质谱结合的在线采样技术提供高分辨率、实时监测的测量结果,有助于分析IVOCs的组成分布及浓度特征.与一维色谱技术相比,二维色谱技术的高灵敏度和强选择性大大提高了大气中有机物在色谱上的分离度.IVOCs采样分析技术的深化能够提高IVOCs定性定量的准确度,并大幅提高城市大气中IVOCs的研究效率和水平.从研究区域及测量物质方面来看,城市大气IVOCs的外场观测研究仍受到测量技术的限制,深入探究IVOCs物质组分及其定量方法是未来研究的重点方向.Intermediate volatility organic compounds(IVOCs)are one of the important organic pollutants in the atmosphere.The current research on the sampling and analysis of IVOCs is relatively limited,compared to other atmospheric pollutants,such as volatile organic compounds(VOCs)and particulate matter.This study provides a detailed overview of sampling and analysis techniques,as well as field observation,of IVOCs in the urban atmospheric environment,with a particular focus on the advancements in quantitative methods of IVOCs.The selection of sampling and analysis techniques depends on the chemical structure,transport and reactivity of IVOCs in the atmosphere.The online sampling techniques coupled with mass spectrometry provide highresolution,and real-time monitoring results,facilitating the analysis of composition distribution and concentration characteristics of IVOCs.Compared to one-dimensional chromatography,twodimensional chromatography significantly enhances the separation of atmospheric organic compounds on the chromatogram,due to their higher sensitivity and stronger selectivity.In-depth research on IVOC sampling and analysis techniques can improve the accuracy of their qualitative and quantitative analysis,thereby greatly enhancing the efficiency and level of research on IVOCs in the urban atmosphere.In terms of the research areas and substances measured,field observations of urban atmospheric IVOCs are still limited by the measurement techniques.The in-depth investigation on the substance components of IVOCs and their quantitative methods is a key direction for future research.

关 键 词：城市大气 中等挥发性有机物 采样分析技术 外场观测 定量方法 

分 类 号：X-1[环境科学与工程] O6[理学—化学]