A Review of Aerosol Chemical Composition and Sources in Representative Regions of China during Wintertime
A Review of Aerosol Chemical Composition and Sources in Representative Regions of China during Wintertime
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DOI：
10.3390/atmos10050277
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发表时间：
2019-05
期刊：
影响因子：
2.9
通讯作者：
Yichen Wang;Qiyuan Wang;Jianhuai Ye;Mengyuan Yan;Q. Qin;A. Prévôt;Junji Cao
中科院分区：
文献类型：
--
作者：
Yichen Wang;Qiyuan Wang;Jianhuai Ye;Mengyuan Yan;Q. Qin;A. Prévôt;Junji Cao
不同城市或地区气溶胶成分和来源的比较相当有限，但对于深入了解中国气溶胶污染的空间差异具有重要意义。利用25个不同的冬季气溶胶质谱仪（AMS）/气溶胶化学形态监测仪（ACSM）研究数据，对京津冀、关中、长江三角洲和珠江三角洲地区进行了空间覆盖。分析了气溶胶组分和有机源的空间分布和日变化，研究了四个地区气溶胶的特征。结果发现，不同区域的非耐火颗粒物质的组成存在差异，例如，PRD中的硫酸盐更多，而YRD中的硝酸盐更多，以及在有机源中，例如，在BTH更多的煤燃烧，而在GZ更多的生物质燃烧。按不同年份的冬季或不同地区的城市划分的战役，NR-PM的组成特征相似。PRD-硫酸盐的日变化反映了其地域性，而北方两个地区燃烧源有机物的日变化则具有地方性。基于这些研究结果，我们建议严格控制政策的燃煤和生物质燃烧的排放，在BTH和广州地区，应分别执行。
Comparisons of aerosol composition and sources in different cities or regions are rather limited, yet important for an in-depth understanding of the spatial diversity of aerosol pollution in China. In this study, the data originating from 25 different winter aerosol mass spectrometer (AMS)/aerosol chemical speciation monitor (ACSM) studies were used to provide spatial coverage of the Beijing-Tianjin-Hebei (BTH), Guanzhong (GZ), Yangtze River Delta (YRD), and Pearl River Delta (PRD) regions. The spatial distribution and diurnal variations in aerosol composition and organic sources were analyzed to investigate the aerosol characteristics in the four regions. It was found that there were differences in the compositions of non-refractory particulate matter across the regions, e.g., more sulfate in the PRD versus more nitrate in the YRD, as well as in the organic sources, e.g., more coal combustion in BTH versus more biomass burning in GZ. The characteristics of the composition of NR-PM are similar when the campaigns were classified according to the winter of different years or the cities of different regions. The diurnal variation of the PRD-sulfate indicated its regional nature, whereas the organics from burning sources in two regions of northern China exhibited local characteristics. Based on these findings, we suggest that strict control policies for coal combustion and biomass burning emissions should be enforced in the BTH and GZ regions, respectively.