Evaluation of hydrogen peroxide in rainwater in downtown Sao Paulo

被引：0
|
作者：
Santos, M. A. [1 ]
Pedrotti, J. J. [1 ]
Fornaro, A. [1 ]
机构：
[1] Univ Presbiteriana Mackenzie, Dept Quim, Rua Consolacao 896, BR-01302907 Sao Paulo, Brazil
来源：
HIGHWAY AND URBAN ENVIRONMENT | 2007年 / 12卷
基金：
巴西圣保罗研究基金会;
关键词：
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The concentration of hydrogen peroxide (H2O2) in rainwater samples collected between April 2003 and April 2004 in downtown Sao Paulo were determined. The concentrations of H2O2 ranged from 2.29 to 48.6 mu mol L-1, with an average value (n = 70) of 13.1 (+/- 11.3) mu mol L-1. The higher concentrations were observed in spring and summer. The volume-weighted mean (VWM) of the free H+ was 6.5 mu mol L-1, corresponding to a pH of 5.2. The analysisOf SO42-, NO3-, and HCOO-, in the same set of samples, showed an average concentration of 11.7 (+/- 10.9), 20.0 ( +/- 18.0), and 6.18 ( +/- 12.4) mu mol L-1, respectively. The HCOO- concentrations showed correlation (r = 0.43) with H2O2,which can indicate reactions in aqueous phase where these two species are formed.
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页码：119 / +
页数：3
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