ATMOSPHERIC CHEMISTRY OF AUTOMOTIVE LEAD

被引：74

作者：

BIGGINS, PDE ^{[1
]}

HARRISON, RM ^{[1
]}

机构：

[1] UNIV LANCASTER, DEPT ENVIRONM SCI, LANCASTER LA1 4YQ, LANCASHIRE, ENGLAND

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1979年 / 13卷 / 05期

关键词：

D O I：

10.1021/es60153a017

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Techniques based upon X-ray powder diffraction (XRD) have been developed for the identification of lead compounds present in ambient air polluted by vehicle exhaust. Three of the compounds identified are known to be present in automobile exhaust: PbBrCl, PbBrCl-2NH4Cl, and α-2PbBrCl-NH4Cl. The other compounds-analyzed were PbBrCl-(NH4)2BrCl, PbSO4, and PbSO4-(NH4)2SO4, the latter being the predominant form of lead at four of five sampling sites. In laboratory experiments designed to elucidate the formation of these compounds, vehicle-generated PbBrCl was exposed to a range of gaseous and particulate pollutants and the products were examined by XRD. The major process affecting primary lead particulates was found to be coagulation with ambient aerosol accompanied by reaction of PbBrCl with neutral and acid sulfates. © 1979, American Chemical Society. All rights reserved.

引用

页码：558 / 565

页数：8

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