標準號：BS EN ISO 28439-2011
中文標準名稱：工作場所空氣.工作場所超細懸浮微粒/納米懸浮微粒的描述.用差示電遷移率分析系統測定粒徑分布和數量濃度
英文標準名稱：Workplace atmospheres. Characterization of ultrafine aerosols/nanoaerosols. Determination of the size distribution and number concentration using differential electrical mobility analysing systems
標準類型：C70
發布日期：2011/4/30 12:00:00
實施日期：2011/4/30 12:00:00
中國標準分類號：C70
國際標準分類號：13.040.30
引用標準：ISO/TR 27628
適用范圍：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.