Tefera Yifokire, Schlünssen Vivi, Kumie Abera, Deressa Wakgari, Moen Bente E, Bråtveit Magne
Department of Preventive Medicine, School of Public Health, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia.
Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway.
Arch Environ Occup Health. 2020;75(7):415-421. doi: 10.1080/19338244.2020.1743958. Epub 2020 Apr 20.
The aim of this study was to determine personal exposure to inhalable dust and endotoxin levels among workers in an integrated cotton-processing textile factory and exposure variability across the different work sections. Full shift measurements were carried out using inhalable conical samplers with 37 mm glass-fiber filters. Personal inhalable dust was determined gravimetrically, and endotoxin levels were analyzed by kinetic chromogenic Limulus Amebocytes Lysate assay. The geometric means of personal dust and endotoxin concentrations were 0.75 mg·m and 831 EU·m, respectively. The highest dust and endotoxin concentrations were observed in carding section (1.34 mg·m and 6,381 EU·m, respectively). Altogether, 11% of dust and 89% of endotoxin samples exceeded workplace exposure limits. This study showed a moderate correlation between inhalable dust and endotoxin ( = 0.450, < 0.001). Our findings indicate that low dust exposure does not guarantee a low exposure to endotoxin.
本研究的目的是确定一家综合棉花加工纺织厂工人的可吸入粉尘个人暴露量和内毒素水平，以及不同工作区域的暴露变异性。使用配有37毫米玻璃纤维滤膜的可吸入锥形采样器进行全时段测量。通过重量法测定个人可吸入粉尘量，并采用动态显色鲎试剂法分析内毒素水平。个人粉尘和内毒素浓度的几何平均值分别为0.75毫克·立方米和831内毒素单位·立方米。在梳棉工段观察到最高的粉尘和内毒素浓度（分别为1.34毫克·立方米和6381内毒素单位·立方米）。总体而言，11%的粉尘样本和89%的内毒素样本超过了工作场所暴露限值。本研究表明可吸入粉尘与内毒素之间存在中度相关性（r = 0.450，p < 0.001）。我们的研究结果表明，低粉尘暴露并不能保证低内毒素暴露。
