标准编号：ISO 28439:2011
中文名称：工作场所空气 超细悬浮微粒/纳米悬浮微粒的描述 用差示电迁移率分析系统测定粒径分布和数量浓度
英文名称：Workplace atmospheres — Characterization of ultrafine aerosols/nanoaerosols — Determination of the size distribution and number concentration using differential electrical mobility analysing systems
发布日期：2011-04
标准范围
This International Standard provides guidelines for the determination of the number concentration and sizedistribution of ultrafine aerosols and nanoaerosols by use of mobility particle sizers (also called differentialmobility analysers). Only the particle fraction of the aerosol is considered. For ultrafine aerosols andnanoaerosols, exposure metrics such as the number and surface area concentration are important.This International Standard also gives guidelines for the determination of workplace exposure to ultrafineaerosols and nanoaerosols.Specifically, the differential mobility analysing system (DMAS), now available from several vendors, isdiscussed. Principles of operation, problems of sampling in the workplace environment, calibration, equipmentmaintenance, measurement uncertainty, and reporting of measurement results are covered.Potential problems and limitations are described, which need to be addressed when limit values are fixed andcompliance measurements carried out.
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