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首页> 美国政府科技报告 >Determination of the Contribution of Long-Lived Dust to the Committed Dose Equivalent Received by Uranium Mine and Mill Workers in the Elliot Lake Area. Volume 2 - Appendices
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Determination of the Contribution of Long-Lived Dust to the Committed Dose Equivalent Received by Uranium Mine and Mill Workers in the Elliot Lake Area. Volume 2 - Appendices

机译：确定长效粉尘对艾略特湖地区铀矿和工厂工人所承诺剂量当量的贡献。第2卷 - 附录

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In 1945 K.R. May developed and described one of the first cascade impactors. It was used to collect airborne fine particles and classify them inertially into several aerodynamic size ranges. This allowed the determination of size distribution and any subsequent analysis to be carried out as a function of particle size. Today cascade impactors are used extensively for collecting airborne fine particles for gravimetric or chemical analysis, air quality monitoring and stack sampling. A cascade impactor should be calibrated under actual working conditions. In the absence of impactor calibration, the performance may be predicted through numerical calculation techniques developed by Ranz and Wong (1952). Stern et al (1962) or the best available theory developed by Marple et al (1974). The experimental data of Rao and Jaenicke and Blifford, agree well with Marple's theory provided that the conditions of the experiment correspond with those of the numerical model. (Atomindex citation 19:035479)

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