二次有机气溶胶估算方法研究进展

被引:40
作者
郑玫
闫才青
李小滢
王雪松
张远航
机构
[1] 北京大学环境科学与工程学院,环境模拟与污染控制国家重点联合实验室
关键词
二次有机气溶胶; 细颗粒物; 定量估算方法; 来源; 中国;
D O I
暂无
中图分类号
X513 [粒状污染物];
学科分类号
摘要
我国区域复合污染日趋严重,二次有机气溶胶(SOA)是细颗粒物PM2.5的重要组成之一.本研究总结了当前国内外定量估算SOA的主要方法,包括EC示踪法、WSOC法、受体模型法、示踪物产率法、数值模拟法等.通过对各种方法的原理介绍与比较,指出1)EC示踪法、WSOC法、受体模型法简单易行,与在线连续观测数据结合可估算高时间分辨率的SOA浓度,但受限于对当地源谱和特定物种的了解;2)示踪物产率法虽分析技术难度高,但可针对不同来源的SOA估算;3)数值模拟可获得大尺度SOA的空间分布.针对国内外的最新研究成果进行简单概述,不同方法的研究表明中国二次有机气溶胶是总有机气溶胶的重要部分,人为源VOCs对二次有机气溶胶发挥着重要贡献.本文旨在为未来我国二次有机气溶胶的研究提供基础信息和研究思路.
引用
收藏
页码:555 / 564
页数:10
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