THE CONCENTRATIONS AND PARTICLE-SIZE RELATIONSHIPS OF SELECTED TRACE-ELEMENTS IN FLY ASHES FROM UK COAL-FIRED POWER-PLANTS AND A REFUSE INCINERATOR

被引：49

作者：

WADGE, A ^{[1
]}

HUTTON, M ^{[1
]}

PETERSON, PJ ^{[1
]}

机构：

[1] KINGS COLL LONDON,MONITORING & ASSESSMENT RES CTR,459A FULHAM RD,LONDON SW10 0QX,ENGLAND

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 1986年 / 54卷

关键词：

COAL - Combustion - ELECTRIC POWER PLANTS - HEAVY METAL COMPOUNDS - Environmental Impact - PARTICLE SIZE ANALYSIS - REFUSE INCINERATORS;

D O I：

10.1016/0048-9697(86)90253-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Fly ash samples from 11 coal-fired power plants and a refuse incinerator in the U. K. were analyzed for total arsenic, cadmium, lead and selenium. Enrichment factor (EF) values calculated with respect to crustal abundance (EF//c//r//u//s//t) were highest for cadmium and lead in refuse fly ash, with EFs of 2500 and 740, respectively. Enrichment factors for selenium were similar in both fly ash types; only arsenic was more enriched in coal fly ash compared with refuse fly ash. Despite the high EF//c//r//u//s//t values of certain elements in the two fly ash types, the same elements showed EF values of about unity when expressed with respect to the starting material. The EF//c//r//u//s//t values estimated for arsenic, lead and selenium in suspended particulates from a refuse incinerator were similar to those calculated for the urban atmospheric aerosol, whereas cadmium was 10 times more enriched in the suspended particulates. Scanning electron microscopy revealed a marked contrast in the morphological features of the two fly ash types.

引用

页码：13 / 27

页数：15