Sulfate Sources in Carbonaceous Aerosol Particles in the Urban Atmosphere: The Case of Irkutsk

被引：1
|
作者：
Yermakov, A. N. [1 ]
Aloyan, A. E. [2 ]
Arutyunyan, V. O. [2 ]
机构：
[1] Russian Acad Sci, Talroze Inst Energy Problems Chem Phys, Moscow 119334, Russia
[2] Russian Acad Sci, Inst Numer Math, Moscow 119333, Russia
来源：
IZVESTIYA ATMOSPHERIC AND OCEANIC PHYSICS | 2019年 / 55卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
carbonaceous aerosol; monitoring; heterogeneous chemical reactions; sulfates; nitrates and chlorides; INDIVIDUAL PARTICLE; MECHANISM; SURFACE; ACID; NITRATE;
D O I：
10.1134/S0001433819020051
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
According to monitoring data, it is found that the main source of sulfates in carbonaceous particles in the atmosphere of Irkutsk is sulfur dioxide captured from the air. Their accumulation in the particles is caused by heterogeneous chemical reactions (HCRs) and is accompanied by the substitution of hydrocarbonates () for sulfate anions. In this case, sulfur dioxide is oxidized by ozone in the dry atmosphere, and hydrogen peroxide (H2O2), along with dissolved ozone, also participates in the oxidation process in the moist atmosphere. The details of the mechanisms for these HCRs are discussed and the estimates of the dynamics of sulphate production in carbonaceous particles are indicated.
引用
收藏
页码：271 / 280
页数：10
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