RARE-EARTH DISTRIBUTIONS IN CATALYSTS AND AIRBORNE PARTICLES

被引：78

作者：

KITTO, ME ^{[1
]}

ANDERSON, DL ^{[1
]}

GORDON, GE ^{[1
]}

OLMEZ, I ^{[1
]}

机构：

[1] UNIV MARYLAND,DEPT CHEM & BIOCHEM,COLLEGE PK,MD 20742

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1992年 / 26卷 / 07期

关键词：

D O I：

10.1021/es00031a014

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Zeolite cracking catalysts used by petroleum refineries were analyzed for 38 elements. Concentration patterns of rare earth elements (REEs) in 10 zeolite catalysts show an enhancement of light REEs relative to the crustal abundance pattern, resembling those measured in refineries emissions. Release of zeolite catalyst material from fluidized catalytic crackers and incorporation of zeolite catalysts into refined oil provide new atmospheric elemental signatures for tracing emissions from refineries and oil-fired power plants, respectively. Though both have enhanced La/REE ratios, emissions from these two sources can be distinguished by their La/V ratios. Three-way catalytic converters of newer automobiles contain REEs and may, thus, be a significant source in some cities.

引用

页码：1368 / 1375

页数：8

共 34 条

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