Occupational exposure to particulate matter and endotoxin for California dairy workers

被引:34
作者
Garcia, Johnny [1 ,2 ]
Bennett, Deborah H. [1 ,2 ]
Tancredi, Daniel [3 ]
Schenker, Marc B. [1 ,2 ]
Mitchell, Diane [1 ,2 ]
Reynolds, Stephen J. [4 ]
Mitloehner, Frank M. [5 ]
机构
[1] Univ Calif Davis, Dept Publ Hlth Sci, Davis, CA 95616 USA
[2] Univ Calif Davis, Ctr Hlth & Environm, Davis, CA 95616 USA
[3] Univ Calif Davis, Dept Pediat, Davis, CA 95616 USA
[4] Colorado State Univ, Dept Environm & Radiol Hlth Sci, Ft Collins, CO 80523 USA
[5] Univ Calif Davis, Dept Anim Sci, Davis, CA 95616 USA
关键词
Dairy; PM; Endotoxin; Occupational exposure; Agriculture; Concentrated animal feeding operations; ANIMAL FEEDING OPERATIONS; ORGANIC DUST EXPOSURE; LUNG-FUNCTION; RESPIRATORY SYMPTOMS; FARMERS; AGRICULTURE; POLLUTION; HAZARDS; DECLINE; DISEASE;
D O I
10.1016/j.ijheh.2012.04.001
中图分类号
R1 [预防医学、卫生学];
学科分类号
1004 ; 120402 ;
摘要
Occupational exposure of dairy workers to particulate matter (PM) and endotoxin has been considered by some to be of potential concern. This paper reports personal exposure concentrations of PM (11 mu g/m(3)) and endotoxin (EU/m(3)) for 226 workers from 13 California dairies. Arithmetic mean personal concentrations for PM2.5, inhalable PM and endotoxin were 48 mu g/m(3) (N = 222), 987 mu g/m(3) (N = 225) and 453 EU/m(3) (N = 225), respectively. Using mixed effects models, time spent re-bedding of freestall barns versus any other job conducted on a dairy led to the highest exposure for PM2.5, inhalable PM, and endotoxin. Personal exposure concentrations were found to be greater than those reported for ambient area based concentrations at the same dairies. A pseudo R-square approach revealed that one area based measure combined with time spent performing tasks explained a significant portion of variation in personal exposure concentrations. (c) 2012 Elsevier GmbH. All rights reserved.
引用
收藏
页码:56 / 62
页数:7
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