ISO/TR 27628:2007包含了表征职业纳米气溶胶暴露的指南，代表了当前最先进的技术，重点是纳米直径颗粒。提供了有关职业环境中纳米气溶胶形成和运输机制以及与纳米气溶胶接触相关的工业过程的背景信息。讨论了适用于纳米气溶胶的暴露度量，并介绍了根据这些度量表征暴露的具体方法。提供了有关散装气溶胶特征和单颗粒分析方法的具体信息。

ISO/TR 27628:2007 contains guidelines on characterizing occupational nanoaerosol exposures and represents the current state-of-the-art, with an emphasis on nanometre-diameter particles. Background information is provided on the mechanisms of nanoaerosol formation and transportation within an occupational setting and on industrial processes associated with nanoaerosol exposure. Exposure metrics appropriate to nanoaerosols are discussed, and specific methods of characterizing exposures with reference to these metrics are covered. Specific information is provided on methods for bulk aerosol characterization and single particle analysis.