Journal article
Electrostatic dust collectors compared to inhalable samplers for measuring endotoxin concentrations in farm homes
Indoor air, Vol.26(5), pp.724-733
10/2016
DOI: 10.1111/ina.12243
PMCID: PMC4850132
PMID: 26296624
Abstract
Paired electrostatic dust collectors (EDCs) and daily, inhalable button samplers (BS) were used concurrently to sample endotoxin in 10 farm homes during 7-day periods in summer and winter. Winter sampling included an optical particle counter (OPC) to measure PM
2.5
and PM
2.5-10
. Electrostatic dust collectors and BS filters were analyzed for endotoxin using the kinetic chromogenic
Limulus
amebocyte lysate assay. Optical particle counter particulate matter (PM) data were divided into two PM categories. In summer, geometric mean (geometric standard deviation) endotoxin concentrations were 0.82 EU/m
3
(2.7) measured with the BS and 737 EU/m
2
(1.9) measured with the EDC. Winter values were 0.52 EU/m
3
(3.1) for BS and 538 EU/m
2
(3.0) for EDCs. Seven day endotoxin values of EDCs were highly correlated with the 7-day BS sampling averages (r=0.70;
p
<0.001). Analysis of variance indicated a 2.4-fold increase in EDC endotoxin concentrations for each unit increase of the ratio of PM
2.5
to PM
2.5-10.
There was also a significant correlation between BS and EDCs endotoxin concentrations for winter (r=0.67;
p
<0.05) and summer(r=0.75;
p
<0.05). Thus, EDCs sample comparable endotoxin concentrations to BS, making EDCs a feasible, easy to use alternative to BS for endotoxin sampling.
Details
- Title: Subtitle
- Electrostatic dust collectors compared to inhalable samplers for measuring endotoxin concentrations in farm homes
- Creators
- Brita Kilburg-BasnyatThomas M PetersSarah S PerryPeter S Thorne
- Resource Type
- Journal article
- Publication Details
- Indoor air, Vol.26(5), pp.724-733
- DOI
- 10.1111/ina.12243
- PMID
- 26296624
- PMCID
- PMC4850132
- NLM abbreviation
- Indoor Air
- ISSN
- 0905-6947
- eISSN
- 1600-0668
- Grant note
- DOI: 10.13039/100008893, name: University of Iowa; DOI: 10.13039/100000066, name: National Institute of Environmental Health Sciences, award: NIH P30 ES005605
- Language
- English
- Date published
- 10/2016
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Civil and Environmental Engineering; Occupational and Environmental Health
- Record Identifier
- 9983997459902771
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