Document Detail


Indoor and outdoor particulate matter and endotoxin concentrations in an intensely agricultural county.
MedLine Citation:
PMID:  23321860     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The objectives of this study were to characterize rural populations' indoor and outdoor exposure to particulate matter (PM)(10), PM(2.5), and endotoxin and identify factors that influence these concentrations. Samples were collected at 197 rural households over five continuous days between 2007 and 2011. Geometric mean (GM) indoor PM(10) (21.2 μg/m(3)) and PM(2.5) (12.2 μg/m(3)) concentrations tended to be larger than outdoor PM(10) (19.6 μg/m(3)) and PM(2.5) (8.2 μg/m(3)) concentrations (PM(10) P=0.086; PM(2.5) P<0.001). Conversely, GM outdoor endotoxin concentrations (1.93 EU/m(-3)) were significantly larger than indoor (0.32 EU/m(3); P<0.001). Compared with measurements from previous urban studies, indoor and outdoor concentrations of PM(10) and PM(2.5) in the study area tended to be smaller, whereas ambient endotoxin concentrations measured outside rural households were 3-10 times larger. Contrary to our initial hypothesis, seasonality did not have a significant effect on mean ambient PM(10) concentrations; however, endotoxin concentrations in the autumn were almost seven times larger than winter. Excluding home cleanliness, the majority of agricultural and housing characteristics evaluated were found to be poorly associated with indoor and outdoor particulate and endotoxin concentrations.
Authors:
Brian T Pavilonis; T Renee Anthony; Patrick T O'Shaughnessy; Michael J Humann; James A Merchant; Genna Moore; Peter S Thorne; Clifford P Weisel; Wayne T Sanderson
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, P.H.S.     Date:  2013-01-16
Journal Detail:
Title:  Journal of exposure science & environmental epidemiology     Volume:  23     ISSN:  1559-064X     ISO Abbreviation:  J Expo Sci Environ Epidemiol     Publication Date:    2013 May-Jun
Date Detail:
Created Date:  2013-04-19     Completed Date:  2013-10-21     Revised Date:  2014-04-10    
Medline Journal Info:
Nlm Unique ID:  101262796     Medline TA:  J Expo Sci Environ Epidemiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  299-305     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Agriculture*
Endotoxins / analysis,  toxicity*
Environmental Exposure*
Humans
Grant Support
ID/Acronym/Agency:
P30 ES005605/ES/NIEHS NIH HHS; T42OH008491/OH/NIOSH CDC HHS; U50 OH007548/OH/NIOSH CDC HHS
Chemical
Reg. No./Substance:
0/Endotoxins
Comments/Corrections

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


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