Atmospheric fate of a series of furanaldehydes by their NO3 reactions

被引：20

作者：

Colmenar, I. ^{[1
,2
]}

Cabanas, B. ^{[1
,2
]}

Martinez, E. ^{[1
,2
]}

Salgado, M. S. ^{[1
,2
]}

Martin, P. ^{[1
,2
]}

机构：

[1] Univ Castilla La Mancha, Inst Tecnol Quim & Medioambiental ITQUIMA, Lab Contaminac Atmosfer, E-13071 Ciudad Real, Spain

[2] Univ Castilla La Mancha, Fac Ciencias Quim, Dept Quim Fis, E-13071 Ciudad Real, Spain

来源：

ATMOSPHERIC ENVIRONMENT | 2012年 / 54卷

关键词：

Furanaldehydes; Rate coefficients; NO3; radical; Relative method; Atmospheric implications; GAS-PHASE REACTIONS; VOLATILE ORGANIC-COMPOUNDS; RATE CONSTANTS; HYDROXYL RADICALS; FURAN; KINETICS; OH; CHEMISTRY; OXIDATION; 2-METHYLFURAN;

D O I：

10.1016/j.atmosenv.2012.02.087

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The kinetics of the reactions of the NO3 radical with 2-furanaldehyde, 3-furanaldehyde and 5-methyl-2-furanaldehyde have been measured at 298 +/- 2 K and 760 Torr of total pressure using a relative kinetic method. The simultaneous losses of furanaldehydes and a reference compound were followed by FTIR spectroscopy. The rate constants obtained for the NO3 reactions are (in cm(3) molecule(-1) s(-1)): (1.20 +/- 0.28) x 10(-12) for 2-furanaldehyde, (3.41 +/- 0.79) x 10(-12) for 3-furanaldehyde and (5.51 +/- 1.27) x 10(-12) for 5-methyl-2-furanaldehyde. This study is the first determination of the rate constants for the reaction of NO3 radicals with furanaldehydes. The results are presented and discussed in terms of structure-reactivity relationships. Calculated atmospheric lifetimes reveal that the night-time reaction with the nitrate radical is the most important loss process for these kinds of compounds. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：177 / 184

页数：8

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