Assessment of increased sampling pump flow rates in a disposable, inhalable aerosol sampler.
Assessment of increased sampling pump flow rates in a disposable, inhalable aerosol sampler.
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DOI：
10.1080/15459624.2016.1237028
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发表时间：
2017-03
影响因子：
2
通讯作者：
Volckens J
中科院分区：
文献类型：
--
作者：
Stewart J;Sleeth DK;Handy RG;Pahler LF;Anthony TR;Volckens J
一种新设计的，低成本的，一次性可吸入气溶胶采样器的开发，以评估工人个人暴露于可吸入颗粒物。该采样器最初设计为以10 L/min的速度运行，以增加样品质量，从而提高基于过滤器的方法的分析检测限。计算流体动力学建模显示，采样器性能（相对于气溶胶可吸入性标准）不会有很大的不同，在采样器流量为2和10 L/min。考虑到这一点，新设计的可吸入气溶胶采样器进行了测试，在风洞中，同时，在2和10 L/min的流量。在风洞内为人体模型配备6个采样器/泵组件（三个泵以2L/min运行，三个泵以10 L/min运行），以0.2m/s运行，这已被证明是典型的室内工作场所风速。在单独的测试中，四种不同的颗粒尺寸被注入，以确定采样器的性能与新的10 L/min的流速显着不同，在2 L/min。可吸入质量浓度之间的比较，使用Wilcoxon符号秩检验发现，在10和2 L/min的所有颗粒尺寸的颗粒采样浓度没有显着差异。我们的研究结果表明，这种新的气溶胶采样器是一种多功能的工具，可以通过提高检测限和允许缩短采样时间来提高执业工业企业家的暴露评估能力。
A newly designed, low-cost, disposable inhalable aerosol sampler was developed to assess workers personal exposure to inhalable particles. This sampler was originally designed to operate at 10 L/min to increase sample mass and, therefore, improve analytical detection limits for filter-based methods. Computational fluid dynamics modeling revealed that sampler performance (relative to aerosol inhalability criteria) would not differ substantially at sampler flows of 2 and 10 L/min. With this in mind, the newly designed inhalable aerosol sampler was tested in a wind tunnel, simultaneously, at flows of 2 and 10 L/min flow. A mannequin was equipped with 6 sampler/pump assemblies (three pumps operated at 2 L/min and three pumps at 10 L/min) inside a wind tunnel, operated at 0.2 m/s, which has been shown to be a typical indoor workplace wind speed. In separate tests, four different particle sizes were injected to determine if the sampler’s performance with the new 10 L/min flow rate significantly differed to that at 2 L/min. A comparison between inhalable mass concentrations using a Wilcoxon signed rank test found no significant difference in the concentration of particles sampled at 10 and 2 L/min for all particle sizes tested. Our results suggest that this new aerosol sampler is a versatile tool that can improve exposure assessment capabilities for the practicing industrial hygienist by improving the limit of detection and allowing for shorting sampling times.
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影响因子：
2
作者：
Anthony TR;Sleeth D;Volckens J
通讯作者：
Volckens J
影响因子：
--
作者：
Gorner, Peter;Simon, Xavier;Witschger, Olivier
通讯作者：
Witschger, Olivier
DOI：
10.1080/15459620903418746
发表时间：
2010-01-01
影响因子：
2
作者：
Zhou, Yue;Cheng, Yung-Sung
通讯作者：
Cheng, Yung-Sung
影响因子：
10
作者：
Ulvestad, B;Bakke, B;Lund, MB
通讯作者：
Lund, MB
影响因子：
--
作者：
Koehler, Kirsten A.;Anthony, T. Renee;Volckens, John
通讯作者：
Volckens, John