Document Detail


Nitrogen dioxide and ozone as factors in the availability of lead from lead-based paints.
MedLine Citation:
PMID:  20028045     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Lead-based paint remains a pervasive problem in U.S. cities, and an increasing problem in the developing world where it is still manufactured and used. Little attention has focused on the factors that increase the release of lead pigment granules from painted surfaces. Nitrogen dioxide (NO(2)) and ozone (O(3)) from transportation emissions in urban environments have the potential to react with and remove polymeric binders in paint, making pigment granules more available for subsequent transfer to hands on contact, or deposition in housedust. Here we show that exposure to NO(2) and O(3) increased the lead in wipe samples of stainless steel surfaces painted with alkyd low gloss solvent lead-based paint by 296% +/- 101 (or 0.24 microg/cm(2)) and 37% +/- 21 (or 0.025 microg/cm(2)), respectively, with corresponding changes in surface morphology indicated by reflectometry and scanning electron microscopy. Lead release from unexposed low gloss acrylic household paints was 40 times greater than comparable solvent based paints. Given that lead-based paint is still manufactured and used in many urban areas of the developing world where O(3) concentrations currently exceed historic U.S. concentrations, the interaction of air pollution with lead painted indoor surfaces may pose greater exposure risks for lead poisoning in children than previously anticipated.
Authors:
R D Edwards; N L Lam; L Zhang; M A Johnson; M T Kleinman
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Environmental science & technology     Volume:  43     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2009 Nov 
Date Detail:
Created Date:  2009-12-23     Completed Date:  2010-01-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  8516-21     Citation Subset:  IM    
Affiliation:
School of Medicine, University of California, Irvine, USA. edwardsr@uci.edu
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MeSH Terms
Descriptor/Qualifier:
Environmental Pollutants / chemistry*
Humans
Lead / chemistry*
Lead Poisoning / prevention & control
Nitrogen Dioxide / chemistry*
Ozone / chemistry*
Paint / analysis*
Chemical
Reg. No./Substance:
0/Environmental Pollutants; 10028-15-6/Ozone; 10102-44-0/Nitrogen Dioxide; 7439-92-1/Lead

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


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