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http://dx.doi.org/10.15269/JKSOEH.2021.31.4.331

Relationship and Characteristics of PM10 and Endotoxin Concentrations in Windowless Poultry Houses in South Korea  

Kim, Hyocher (National Institute of Agricultural Science, Rural Development Administration)
Sin, Sojung (National Institute of Agricultural Science, Rural Development Administration)
Kim, Kyungsu (National Institute of Agricultural Science, Rural Development Administration)
Jung, Wongeon (National Institute of Agricultural Science, Rural Development Administration)
Publication Information
Journal of Korean Society of Occupational and Environmental Hygiene / v.31, no.4, 2021 , pp. 331-341 More about this Journal
Abstract
Objectives: The aim of this study was to evaluate the concentrations and relationships of coarse particles with a diameter of 10 ㎛ (PM10) with endotoxins according to the time of measurement in windowless poultry houses. Methods: In this study, measurement was performed on ten windowless poultry houses with a vertically integrated system from July to November. PM10 was measured using personal environmental monitors and polytetrafluoroethylene (PTFE) filters with a 4 L/min-calibrated pump in selected sampling locations (two near the door and two near an exhaust fan). The endotoxin on PTFE filter was analyzed by the LAL turbidimetric method. Results: The range of geometric mean concentrations of PM10 and endotoxins for each of the 38 samples were 0.12-3.30 mg/m3 and 11.9-3553.66 EU/m3, respectively. PM10 and endotoxin concentrations varied by farm, increasing with the decrease in ventilation. The range of the coefficient of determination between PM10 and endotoxin was 0.0009-0.9249. As the atmospheric temperature decreased, it was confirmed that the concentrations of PM10 and endotoxin increased because the volume of ventilation was decreased. Conclusions: Endotoxins were more affected by time of measurement and ventilation than PM10, which means that endotoxins could be an important indicator for intervention programs for improvement of indoor environments.
Keywords
$PM_{10}$; endotoxin; poultry house; exposure;
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