Atmospheric concentrations of the Cl atom, CIO radical, and HO radical in the coastal marine boundary layer

被引：77

作者：

Chang, CT

Liu, TH

Jeng, FT

机构：

[1] Natl I Lan, Dept Environm Engn, I Lan City 260, Taiwan

[2] Natl Taiwan Univ, Grad Inst Environm Engn, Taipei 106, Taiwan

来源：

ENVIRONMENTAL RESEARCH | 2004年 / 94卷 / 01期

关键词：

chlorine atom; chlorine monoxide radical; hydroxyl radical; atmospheric chemistry modeling; sea salt aerosol;

D O I：

10.1016/j.envres.2003.07.008

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Atmospheric concentrations of chlorine atom (Cl-.), chlorine monoxide radical (ClO.), and hydroxyl radical (HO.) in the coastal marine boundary layer are estimated in this study. A steady-state approach to their concentrations in equilibrium with other atmospheric chemical species is used. Measurements of atmospheric trace species, HCl, Cl-2, HCHO, H2O2, CH3OOH, CH4, CO, SO2, NO, NO2, and O-3, were performed at four sites in Taiwan during the spring of 1999. The results indicate that the concentrations of the Cl-. atom and the ClO. and HO' radicals decrease significantly with cloud cover. The calculated average daytime concentrations of Cl-. ClO. and HO. are 3 x 10(5), 1 x .10(7), and 6 x 10(5) Molecules/cm(3), respectively. Due to the high reactivity of Cl-. with hydrocarbons land its concentration level competitive to that of HO. Cl-. should be a significant sink for hydrocarbons in these cases. (C) 2003 Elsevier Inc. All rights reserved.

引用

页码：67 / 74

页数：8

共 19 条

[1] KINETICS OF THE GAS-PHASE REACTION OF CL ATOMS WITH A SERIES OF ORGANICS AT 296+/- 2K AND ATMOSPHERIC-PRESSURE [J].