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Chemical speciation of lead dust associated with primary lead smelting.
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MedLine Citation:
PMID:  9721256     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The research presented in this article assessed geochemical factors relating to dust produced during primary lead smelting. Bulk dust samples and size-selective airborne dust samples were collected from four areas of a primary lead smelter and analyzed by X-ray diffraction and sequential chemical extraction. X-ray diffraction showed that the smelter dusts were composed primarily of sulfides, oxides, sulfates, and silicates of metal ores, with galena being the primary dust component. Sequential extraction revealed the solubility of lead compounds at less than 7% in the exchangeable and mildly acidic steps for the bulk dusts collected from four smelter areas. The later steps of the extraction procedure were more effective in dissolving the lead compounds associated with the bulk dust samples, with 43%, 26%, and 8% of the total lead, in the ore storage, sinter, and blast/dross smelter areas, respectively, being extracted in the residual step. Sequential extraction of coarse airborne dust samples from the ore storage and sinter plant showed that 1.2% and 4.1% of the total lead, respectively, was exchangeable. The finer particle size fractions from these areas of the smelter showed higher percentages of exchangeable lead. Of the course airborne dust from the blast/dross furnace processes, 65% of the total lead was exchangeable. However, the largest percentage of lead from these areas was associated with the finer particle-size fractions. If lead bioavailability is related to its solubility as determined through sequential extraction, the health hazards associated with lead exposure may be appreciably enhanced in the blast and dross furnace processes.
Authors:
T M Spear; W Svee; J H Vincent; N Stanisich
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Environmental health perspectives     Volume:  106     ISSN:  0091-6765     ISO Abbreviation:  Environ. Health Perspect.     Publication Date:  1998 Sep 
Date Detail:
Created Date:  1998-11-25     Completed Date:  1998-11-25     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0330411     Medline TA:  Environ Health Perspect     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  565-71     Citation Subset:  IM    
Affiliation:
School of Mines, Montana Tech of The University of Montana, Butte, MT 59701-8997, USA.
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MeSH Terms
Descriptor/Qualifier:
Air Pollutants, Occupational / analysis*
Dust / analysis*
Environmental Monitoring*
Humans
Lead / analysis*,  chemistry*
Metallurgy
Montana
Occupational Exposure / analysis*
Sulfides / analysis
Chemical
Reg. No./Substance:
0/Air Pollutants, Occupational; 0/Dust; 0/Sulfides; 1314-87-0/lead sulfide; 7439-92-1/Lead
Comments/Corrections
Comment In:
Environ Health Perspect. 1998 Sep;106(9):531   [PMID:  9841212 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Full Text
Journal Information
Journal ID (nlm-ta): Environ Health Perspect
ISSN: 0091-6765
Article Information
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Print publication date: Month: 9 Year: 1998
Volume: 106 Issue: 9
First Page: 565 Last Page: 571
ID: 1533158
PubMed Id: 9721256

Chemical speciation of lead dust associated with primary lead smelting.
T M Spear
W Svee
J H Vincent
N Stanisich
School of Mines, Montana Tech of The University of Montana, Butte, MT 59701-8997, USA.



Article Categories:
  • Research Article


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