Laboratory Study of Selected Personal Inhalable Aerosol Samplers
Laboratory Study of Selected Personal Inhalable Aerosol Samplers
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DOI：
10.1093/annhyg/mep079
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发表时间：
2010-03-01
影响因子：
--
通讯作者：
Witschger, Olivier
中科院分区：
文献类型：
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作者：
Gorner, Peter;Simon, Xavier;Witschger, Olivier
可吸入粉尘暴露评估需要可靠的采样方法，以便测量空气中可吸入颗粒的浓度。可以使用许多可吸入气溶胶采样器，但它们的性能差异很大，在某些情况下仍然未知。可吸入式取样器的取样性能在很大程度上取决于颗粒大小和周围空气速度。在两个实验室风洞中对5种可吸入气溶胶取样器进行了多分散玻璃珠测试气溶胶的研究。测试的取样器有IOM取样器（英国），CIP 10-I v1和v2 (F)两种版本的取样器，37-mm闭式卡式取样器（美国），37-mm卡式装有ACCU-CAP （TM）插入件（美国）和按钮取样器（美国）。在风速为1 m s（-1）的水平风洞和平静空气条件下的垂直风洞中，采用Coulter (R)计数器粒度数分布确定的特定方法，测量了粒径相关的采样效率。与CEN-ISO-ACGIH可吸入粉尘取样标准相比，实验结果表明，IOM和CIP 10-I v2取样器的取样效率较高，而Button和CIP 10-I v1取样器的取样效率略低。封闭面盒（4毫米孔）产生的性能最差的所有测试的采样器。这可以通过使用ACCU-CAP （TM）内部胶囊来改善，该胶囊可以防止卡带内部的内壁损失。所有被研究的采样器在流动空气和静止空气取样效率之间观察到显著差异。
Assessment of inhalable dust exposure requires reliable sampling methods in order to measure airborne inhalable particles' concentrations. Many inhalable aerosol samplers can be used but their performances widely vary and remain unknown in some cases. The sampling performance of inhalable samplers is strongly dependent on particle size and ambient air velocity. Five inhalable aerosol samplers have been studied in two laboratory wind tunnels using polydisperse glass-beads' test aerosol. Samplers tested were IOM sampler (UK), two versions of CIP 10-I sampler, v1 and v2 (F), 37-mm closed face cassette sampler (USA), 37-mm cassette fitted up with an ACCU-CAP (TM) insert (USA), and Button sampler (USA). Particle size-dependent sampling efficiencies were measured in a horizontal wind tunnel under a 1 m s(-1) wind velocity and in a vertical tunnel under calm air, using a specific method with Coulter (R) counter particle size number distribution determinations. Compared with CEN-ISO-ACGIH sampling criteria for inhalable dust, the experimental results show fairly high sampling efficiency for the IOM and CIP 10-I v2 samplers and slightly lower efficiencies for the Button and CIP 10-I v1 samplers. The closed face cassette (4-mm orifice) produced the poorest performances of all the tested samplers. This can be improved by using the ACCU-CAP (TM) internal capsule, which prevents inner wall losses inside the cassette. Significant differences between moving air and calm air sampling efficiency were observed for all the studied samplers.