在施工任务中对可呼吸晶体二氧化暴露的时间评估
Emily J Cothern1, Daniel A Autenrieth2, William J Brazile1
1Department of Environmental and Radiological Health Sciences, Colorado State University, 1681 Campus Delivery, Fort Collins, CO 80523-1681, United States.
Annals of work exposures and health
|February 27, 2024
概括
在建筑工地实时监测二氧化尘,发现不同任务期间暴露水平的显著差异. 研磨显示出估计最高的粉度,突出了对工人的潜在风险.
科学领域:
- 职业健康和安全问题 职业健康和安全问题
- 环境科学 环境科学
- 工业卫生 工业卫生
背景情况:
- 涉及含有晶体二氧化材料的建筑工程存在重大呼吸道健康风险.
- 在OSHA表1中,提供了控制在特定建筑任务中接触晶体二氧化的指导方针.
- 准确的实时监测对于评估工人暴露和评估控制措施至关重要.
研究的目的:
- 在五个特定的施工任务中估计实时的二氧化粉度.
- 评估个人空气监测对评估二氧化暴露的有效性.
- 在建筑工地识别潜在高粉暴露的任务.
主要方法:
- 在科罗拉多州北部的建筑工地使用 TSI SidePak AM520 监视器进行个人空气监测.
- 在OSHA表1中概述的五项任务期间进行了测量.
- 用重力测量校正因子和可呼吸的晶体二氧化百分比调整光度数据.
主要成果:
- 估计的平均粉度因任务而异:研磨 (918 μg/m3),斗孔钻 (66 μg/m3),走后切割 (36 μg/m3),吊 (27 μg/m3) 和核心钻 (12 μg/m3).
- 研磨任务表现出最高估计的粉度,具有相当大的标准偏差.
- 该研究强调了在某些建筑活动期间可能出现高峰暴露的可能性.
结论:
- 实时监测有效地估计了粉度,并可以识别导致高暴露的任务或行为.
- 调查结果表明,当前的控制措施或工作实践在某些任务中可能不足,特别是研磨.
- 具体的暴露估计是唯一的网站和任务,可能无法将其推广到其他建筑环境.
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