职业性暴露于可呼吸性粉尘,可呼吸性结晶二氧化硅和柴油发动机废气排放在伦敦隧道环境。

Annals of Occupational Hygiene Pub Date : 2016-03-01 Epub Date: 2015-09-23 DOI:10.1093/annhyg/mev067
Karen S Galea, Craig Mair, Carla Alexander, Frank de Vocht, Martie van Tongeren
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引用次数: 9

摘要

对某地铁隧道施工工人8小时轮班暴露于可呼吸性粉尘、柴油机废气排放(DEEE)(作为可呼吸性单质碳)和可呼吸性结晶二氧化硅进行了评估。使用MicroAeth AE51测定黑碳(BC)浓度。在隧道喷射混凝土衬砌过程中,几何平均(GM)呼吸性粉尘暴露水平为0.91mg m(-3),其中备用喷雾器的最高暴露水平为3.20mg m(-3)。SCL工人的转基因可吸入结晶二氧化硅浓度为0.03mg m(-3),备用喷雾器的浓度也最高(0.24mg m(-3))。隧道掘进机作业时,GM呼吸性粉尘浓度为0.54mg m(-3)。TBM作业人员的GM可吸入元素碳浓度均为18µg m(-3);在片段提升器上测量的最高浓度。与TBM环境相比,SCL环境中的BC浓度更高(每日GM 18-54µg m(-3)比3-6µg m(-3))。这一小规模监测活动提供了有关地下隧道建筑工人所受辐射的额外个人数据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Occupational Exposure to Respirable Dust, Respirable Crystalline Silica and Diesel Engine Exhaust Emissions in the London Tunnelling Environment.

Personal 8-h shift exposure to respirable dust, diesel engine exhaust emissions (DEEE) (as respirable elemental carbon), and respirable crystalline silica of workers involved in constructing an underground metro railway tunnel was assessed. Black carbon (BC) concentrations were also assessed using a MicroAeth AE51. During sprayed concrete lining (SCL) activities in the tunnel, the geometric mean (GM) respirable dust exposure level was 0.91mg m(-3), with the highest exposure measured on a back-up sprayer (3.20mg m(-3)). The GM respirable crystalline silica concentration for SCL workers was 0.03mg m(-3), with the highest measurement also for the back-up sprayer (0.24mg m(-3)). During tunnel boring machine (TBM) activities, the GM respirable dust concentration was 0.54mg m(-3). The GM respirable elemental carbon concentration for all the TBM operators was 18 µg m(-3); with the highest concentration measured on a segment lifter. The BC concentrations were higher in the SCL environment in comparison to the TBM environment (daily GM 18-54 µg m(-3) versus 3-6 µg m(-3)). This small-scale monitoring campaign provides additional personal data on exposures experienced by underground tunnel construction workers.

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