PM_(2.5)碳组分研究现状综述

Review on Research Status of PM_(2.5) Carbon Composition Research

了解PM_(2.5)的化学组成、来源、大气传输过程和环境效应对大气污染有效控制对策的制定有重要意义,大气气溶胶碳质组分主要包括有机碳和元素碳,是大气细粒子的重要组成部分。通过总结国内南北方城市PM_(2.5)碳组分分析方面的研究,综述中国环境大气碳组分观测研究的现状,就大气PM_(2.5)碳组分OC、EC的浓度水平、OC和EC比值分析,相关性分析和来源等方面进行讨论。评述结果表明,南北方城市的样品数据PM_(2.5)碳组分OC、EC的浓度水平均有季节性差异,并且南北方城市相关性和源解析结果存在较大差异,以期为环境监测资料的深入科学分析提供参考和借鉴。在此基础上,指出现有研究的一些局限,并对今后的大气碳组分观测研究提出针对性的建议。

Understanding the chemical composition,sources,atmospheric transport processes,and environmental effects of PM_(2.5) is important for developing effective control measures for atmospheric pollution.The carbonaceous components of atmospheric aerosols primarily consist of organic carbon and elemental carbon,and are an important component of atmospheric fine particles.The research on PM_(2.5) carbon composition analysis in cities in the north and south of China was summarized,the current status of observational research on atmospheric carbon composition in China was reviewed,and the concentration levels,ratio analysis,correlation analysis,and sources of atmospheric PM_(2.5) carbon components OC and EC were discussed.The results of the review indicated that there were seasonal differences in the concentration levels of PM_(2.5) carbon components OC and EC in the sample data from cities in the north and south,and there were significant differences in the correlation and source analysis results between cities in the north and south.A reference was provided for further scientific analysis of environmental monitoring data.On this basis,some limitations of existing research were pointed out,and targeted suggestions were provided for future atmospheric carbon composition observation research.