Mineralogic constraints on the bioavailability of arsenic in smelter-impacted soils

被引：104

作者：

Davis, A

Ruby, MV

Bloom, M

Schoof, R

Freeman, G

Bergstom, PD

机构：

[1] PTI ENVIRONM SERV,BOULDER,CO 80301

[2] PTI ENVIRONM SERV,BELLEVUE,WA 98007

[3] BATTELLE MEM INST,COLUMBUS,OH 43201

[4] ATLANTIC RICHFIELD CO,DENVER,CO 80202

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1996年 / 30卷 / 02期

关键词：

D O I：

10.1021/es9407857

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Superfund risk assessments and the resulting soil arsenic (As) cleanup levels selected for mining sites are currently based on the toxicity of soluble As in drinking water. However, Anaconda soils and house dusts contain less soluble smelter-related As phases, consisting primarily of metal-arsenic oxides and phosphates. If accidentally ingested, As bioaccessibility is restricted by the sparingly soluble nature of As-bearing phases, the prevalence of authigenic carbonate and silicate rinds, the kinetic hindrance to dissolution, and the inaccessibility of encapsulated As, These limitations to As disolution explain the lower bioavailability factors observed for Anaconda As-bearing soils.

引用

页码：392 / 399

页数：8

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