Evaluation of total and inhalable samplers for the collection of carbon nanotube and carbon nanofiber aerosols.
Evaluation of total and inhalable samplers for the collection of carbon nanotube and carbon nanofiber aerosols.
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DOI：
10.1080/02786826.2019.1618437
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Grinshpun SA
中科院分区：
文献类型：
--
作者：
Dahm MM;Evans DE;Bertke S;Grinshpun SA
越来越多的碳纳米管和纳米纤维（CNT/F）暴露和流行病学研究使用了25 mm和37 mm的开放式卡匣（OFC）来评估可吸入气溶胶分数。先前已经确定37 mm OFC对直径大于20 μm的颗粒进行了欠采样，但25 mm OFC的尺寸选择特性尚未得到充分评价。本文描述了一项实验研究，以确定25和37 mm OFC在使用CNT/F颗粒挑战时与参考可吸入气溶胶采样器的相对等效性。使用25 mm苯乙烯OFC、37 mm苯乙烯OFC、25 mm铝OFC和按钮式可吸入气溶胶采样器在小文丘里室内收集并排配对样品。三种类型的CNT/F材料和亚利桑那州的道路灰尘被用作挑战气溶胶的各种采样器配置。对每种采样器配置和材料进行重复实验。OFC采样器以每分钟2升和5升的流速运行。结果表明，25 mm OFC在CNT/F气溶胶的挑战下对按钮式采样器进行了测试，这在六个实验场景中的五个场景中得到了证明，平均误差为20%。总体而言，本研究的结果表明，25-和37-mm OFC的采样效率充分遵循ISO/ACGIH/CEN可吸入采样公约时，挑战CNT/F气溶胶。过去使用这些OFC采样器的暴露和流行病学研究可以直接将其结果与使用其他经验证的可吸入气溶胶采样器的研究进行比较。
A growing number of carbon nanotubes and nanofibers (CNT/F) exposure and epidemiologic studies have utilized 25-mm and 37-mm open-faced cassettes (OFC) to assess the inhalable aerosol fraction. It has been previously established that the 37-mm OFC under-samples particles greater than 20 μm in diameter, but the size-selective characteristics of the 25-mm OFC have not yet been fully evaluated. This article describes an experimental study conducted to determine if the 25- and 37-mm OFCs performed with relative equivalence to a reference inhalable aerosol sampler when challenged with CNT/F particles. Side-by-side paired samples were collected within a small Venturi chamber using a 25-mm styrene OFC, 37-mm styrene OFC, 25-mm aluminum OFC, and Button Inhalable Aerosol Sampler. Three types of CNT/F materials and an Arizona road dust were used as challenge aerosols for the various sampler configurations. Repeated experiments were conducted for each sampler configuration and material. The OFC samplers operated at flow rates of 2 and 5 liters per minute. Results showed that the 25-mm OFC performed comparably to the Button Sampler when challenged with CNT/F aerosols, which was demonstrated in five of the six experimental scenarios with an average error of 20%. Overall, the results of this study indicate that the sampling efficiency of the 25- and 37-mm OFCs adequately followed the ISO/ACGIH/CEN inhalable sampling convention when challenged with CNT/F aerosols. Past exposure and epidemiologic studies that used these OFC samplers can directly compare their results to studies that have used other validated inhalable aerosol samplers.
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影响因子：
3.8
作者：
Fatkhutdinova LM;Khaliullin TO;Vasil'yeva OL;Zalyalov RR;Mustafin IG;Kisin ER;Birch ME;Yanamala N;Shvedova AA
通讯作者：
Shvedova AA
影响因子：
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作者：
Bartley, DL
通讯作者：
Bartley, DL
影响因子：
2.6
作者：
Dahm, Matthew M.;Bertke, Stephen;Schubauer-Berigan, Mary K.
通讯作者：
Schubauer-Berigan, Mary K.
影响因子：
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作者：
Birch, M. Eileen;Ku, Bon-Ki;Ruda-Eberenz, Toni A.
通讯作者：
Ruda-Eberenz, Toni A.
影响因子：
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作者：
Boundy, Maryanne;Leith, David;Polton, Thomas
通讯作者：
Polton, Thomas