典型文献
Intensified wintertime secondary inorganic aerosol formation during heavy haze pollution episodes(HPEs)in Beijing,China
文献摘要：
Air pollution in China is complex,and the formation mechanism of chemical components in particulate matter is still unclear.This study selected three consecutive heavy haze pollu-tion episodes(HPEs)during winter in Beijing for continuous field observation,including an episode with heavy air pollution under red alert.Clean days during the observation period were selected for comparison.The HPE characteristics of Beijing in winter were:under the influence of adverse meteorological conditions such as high relative humidity,temperature inversion and low wind speed;and strengthening of secondary transformation reactions,which further intensified the accumulation of secondary aerosols and other pollutants,pro-moting the explosive growth of PM2.5.PM2.5/CO values,as indicators of the contribution of secondary transformation in PM2.5,were approximately 2 times higher in the HPEs than the average PM2.5/CO during the clean period.The secondary inorganic aerosols(sulfate ni-trate and ammonium salt)were significantly enhanced during the HPEs,and the conversion coefficients were remarkably improved.In addition,it is interesting to observe that the pro-duction of sulfate tended to exceed that of nitrate in the late stage of all three HPEs.The existence of aqueous phase reactions led to the explosive growth sulfur oxidation ratio(SOR)and rapid generation of sulfate under high relative humidity(RH＞70％).
文献关键词：
中图分类号：
作者姓名：
Lingyan Wu;Xiaoye Zhang;Junying Sun;Yu Wang;Junting Zhong;Zhaoyang Meng
作者机构：
State Key Laboratory of Severe Weather&Key Laboratory of Atmospheric Chemistry of CMA,Chinese Academy of Meteorological Sciences,Beijing 100081,China
文献出处：
引用格式：
[1]Lingyan Wu;Xiaoye Zhang;Junying Sun;Yu Wang;Junting Zhong;Zhaoyang Meng-.Intensified wintertime secondary inorganic aerosol formation during heavy haze pollution episodes(HPEs)in Beijing,China)[J].环境科学学报（英文版）,2022(04):503-513
A类：
HPEs
B类：
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AB值：
0.517443
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