Ayalew Eyasu, Gebre Yonas, De Wael Karolien
1.Center for Environmental Sciences, College of Natural Sciences, Addis Ababa University, PO Box 1176, Addis Ababa, Ethiopia 2.Axes Research Group, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
3.Department of Chemistry, College of Natural Sciences, Addis Ababa University, PO Box 1176, Addis Ababa, Ethiopia.
Ann Occup Hyg. 2015 Mar;59(2):253-7. doi: 10.1093/annhyg/meu086. Epub 2014 Oct 27.
A study of wood dust exposure in 20 small- and medium-scale wood-processing enterprises was performed in Ethiopia. Sampling was conducted daily from January to June, 2013 and a total of 360 samples from 113 workers were collected with Institute of Occupational Medicine (IOM) personal samplers. Eight-hour time-weighted average exposure to wood dust ranged from 0.24 to 23.3mg m(-3) with a geometric mean (GM) of 6.82mg m(-3) and a geometric standard deviation of 1.82. Although Ethiopia did not have any defined standard of Occupational Exposure Limit for wood dust exposure, 71% of the measurements exceeded the limit of 5mg m(-3) set by the European Union (EU). Higher than the EU exposure limit was measured while workers perform sanding and sawing activities with a GM of 9.72 and 7.60mg m(-3), respectively. In conclusion, wood workers in the small- and medium-scale enterprises are at a higher risk of developing different respiratory health problems with continuous exposure trends.
在埃塞俄比亚对20家中小型木材加工企业的木尘暴露情况进行了一项研究。于2013年1月至6月每天进行采样，使用职业医学研究所（IOM）的个人采样器，共收集了113名工人的360个样本。八小时时间加权平均木尘暴露量在0.24至23.3mg/m³之间，几何均值（GM）为6.82mg/m³，几何标准差为1.82。尽管埃塞俄比亚没有针对木尘暴露的任何明确职业接触限值标准，但71%的测量值超过了欧盟（EU）设定的5mg/m³的限值。在工人进行打磨和锯切活动时测得高于欧盟暴露限值，其几何均值分别为9.72和7.60mg/m³。总之，中小型企业的木工随着持续的暴露趋势，面临更高的患不同呼吸道健康问题的风险。
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