| Spatial analysis of bioavailable soil lead concentrations in Los Angeles, California. | |
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MedLine Citation:
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PMID: 20219189 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Lead (Pb) poisoning causes permanent neurologic and developmental disorders and remains an important environmental health problem for US children, despite removal of Pb from gasoline and household paints. To better understand the contribution of Pb from historical traffic and residential Pb based paint to soil Pb concentrations in Los Angeles, we analyzed 550 soil Pb samples from south central Los Angeles County, CA, in relation to land-use patterns (commercial, industrial, residential, and parks and open areas) and proximity to freeways, highways, and major arterials. House age variables (surrogates of historical Pb-based paint) and traffic index variables (surrogates of historical traffic) were created at different buffer distances (10-5000m). Total and bioavailable Pb concentrations near freeways and major arterials were significantly higher than those collected elsewhere. Total and bioavailable Pb concentrations were highly correlated (r=0.96) after the removal of one outlier. Both parcel-age related variables and traffic variables were important predictors of current soil bioavailable Pb concentrations. Average age of parcels within 30m and length of small streets within 3000m explained 57% and 38% of the variance, respectively, in soil bioavailable Pb concentrations in residential areas away from freeways and major arterials (N=44). Road length of freeways within 750m explained 28% of bioavailable Pb concentrations in parks and open areas (N=26). Multi-variable regression models predicted 16-61% of the variances in bioavailable Pb concentrations, depending on land-use type and spatial relationship to roadways. Based on these models a map of spatial distributions of soil Pb concentrations was created for the Los Angeles area that shows promise as a screening tool to evaluate continued Pb poisoning in children. |
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Authors:
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Jun Wu; Rufus Edwards; Xueqin Elaine He; Zhen Liu; Michael Kleinman |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. Date: 2010-03-09 |
Journal Detail:
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Title: Environmental research Volume: 110 ISSN: 1096-0953 ISO Abbreviation: Environ. Res. Publication Date: 2010 May |
Date Detail:
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Created Date: 2010-04-19 Completed Date: 2010-04-30 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0147621 Medline TA: Environ Res Country: United States |
Other Details:
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Languages: eng Pagination: 309-17 Citation Subset: IM |
Copyright Information:
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Copyright 2010 Elsevier Inc. All rights reserved. |
Affiliation:
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Program in Public Health, College of Health Sciences, University of California, Irvine, CA, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Environmental Monitoring Environmental Pollution / statistics & numerical data Geography* Lead / analysis* Los Angeles Regression Analysis Soil / analysis Soil Pollutants / analysis* |
| Chemical | |
Reg. No./Substance:
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0/Soil; 0/Soil Pollutants; 7439-92-1/Lead |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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