Myojo Toshihiko, Oyabu Takako, Kuroda Kaori, Kadoya Chikara, Nishi Ken-Ichiro, Tanaka Isamu
Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Iseigaoka 1-1, Kitakyushu 807-8555, Japan.
Ann Occup Hyg. 2007 Jun;51(4):371-8. doi: 10.1093/annhyg/mem011. Epub 2007 Apr 24.
A static horizontal elutriator (multi-channel elutriator C-30, Sibata Scientific Instruments Ltd, Tokyo) has been widely used as a dust size classifier for a low-volume air sampler in Japan. The sampler uses the historical criterion defined by the British Medical Research Council (BMRC). However, a new sampling convention based on the ISO 7708 respirable dust convention was recently introduced into the Japanese standard for work environment measurement. It is necessary to modify the multi-channel static horizontal elutriator to satisfy the ISO 7708 respirable convention. We propose a modification of the horizontal elutriator, involving the shortening of 11 of the 36 plates to meet the ISO 7708 respirable convention. The relationship between aerosol particle size and penetration for the elutriator was measured in calm air. The measured penetrations were compared with the calculated performance of the sampler and with the sampling convention for the ISO respirable dust. The calculated bias of sampled masses with respect to the ISO respirable mass was almost zero for the workplace aerosols.
在日本，一种静态卧式淘析器（多通道淘析器C - 30，柴田科学仪器有限公司，东京）已被广泛用作低流量空气采样器的粉尘粒度分级器。该采样器采用英国医学研究理事会（BMRC）定义的历史标准。然而，最近基于ISO 7708可吸入粉尘公约的新采样规范被引入到日本工作环境测量标准中。有必要对多通道静态卧式淘析器进行修改，以满足ISO 7708可吸入粉尘公约。我们提出对卧式淘析器进行修改，即将36个板中的11个板缩短，以符合ISO 7708可吸入粉尘公约。在平静空气中测量了淘析器中气溶胶粒径与穿透率之间的关系。将测得的穿透率与采样器的计算性能以及ISO可吸入粉尘的采样规范进行了比较。对于工作场所气溶胶，采样质量相对于ISO可吸入质量的计算偏差几乎为零。
