37毫米滤膜盒的气溶胶采样效率。

Aerosol sampling efficiency of 37 mm filter cassettes.

作者信息

Buchan R M, Soderholm S C, Tillery M I

出版信息

Am Ind Hyg Assoc J. 1986 Dec;47(12):825-31. doi: 10.1080/15298668691390728.

Abstract

This research compared the sampling efficiencies of open- and closed-face 37 mm filter cassettes and an experimental cassette with a tapered inlet. The experiment involved challenging the cassettes with various aerosol sizes up to 24 micron Mass Median Aerodynamic Diameter (MMAD) in a wind tunnel operated at 100 cm/sec. Sampling efficiencies were determined by comparing cassette mass concentration measurements to paired isokinetic samples. It was found that sampling efficiencies dropped with increasing particle size and that the cassette with the tapered entry offered no improvement to sampling efficiency. Sampling efficiency appeared to be improved by placing cassettes on a manikin to simulate personal sampling.

摘要

本研究比较了开口式和封闭式37毫米过滤盒以及一种带有锥形入口的实验盒的采样效率。实验在风速为100厘米/秒的风洞中进行，用各种气溶胶尺寸直至质量中值空气动力学直径（MMAD）达24微米的气溶胶对这些盒子进行测试。通过将盒质量浓度测量值与配对的等速采样进行比较来确定采样效率。结果发现，采样效率随粒径增大而下降，且带有锥形入口的盒子并未提高采样效率。将盒子放置在人体模型上以模拟个人采样时，采样效率似乎有所提高。