Relative rate constants for the heterogeneous reactions of OH, NO2 and NO radicals with polycyclic aromatic hydrocarbons adsorbed on carbonaceous particles.: Part 1:: PAHs adsorbed on 1-2μm calibrated graphite particles

被引：99

作者：

Esteve, W

Budzinski, H

Villenave, E ^{[1
]}

机构：

[1] Univ Bordeaux 1, CNRS UMR 5803, Lab Physicochim Mol, F-33405 Talence, France

[2] Univ Bordeaux 1, CNRS UMR 5472, Lab Physicotoxicochim Syst Nat, F-33405 Talence, France

来源：

ATMOSPHERIC ENVIRONMENT | 2004年 / 38卷 / 35期

关键词：

PAHs; graphite particle; reactivity; kinetics;

D O I：

10.1016/j.atmosenv.2004.05.059

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A discharge flow reactor was used to study the heterogeneous reactions of OH, NO2 and NO radicals with 11 polycyclic aromatic hydrocarbons (PAHs) adsorbed on 1-2 mum calibrated graphite particles. Graphite was chosen as a simple model of carbonaceous atmospheric particles. Relative kinetic information was obtained from the decays of particulate-PAH concentration vs. the time, measured using off-line gas chromatography coupled to mass spectrometry. Particulate-anthracene, -benzo(a)pyrene and -perylene are the most reactive with NO2, whereas all PAHs studied present similar reactivities with OH within uncertainties. The reactivity of NO under our experimental conditions could not be distinguished from the PAH desorption. (C) 2004 Elsevier Ltd. All rights reserved.

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收藏

页码：6063 / 6072

页数：10

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