ÖNORM EN ISO 13138

Sampling conventions are presented for defining idealized samplers for estimating the deposition of nonvolatile, non-hygroscopic, non-fibrous aerosols in 5 specific loci of the respiratory tract as computed according to a model developed by the International Commission on Radiological Protection (ICRP (1994) [1]). The five loci consist of the anterior and posterior areas of the nasal passages, the ciliated and non-ciliated parts of the tracheobronchial area, and the alveolar (gas exchange) region. The conventions are separated into 3 independent sampling efficiencies defined in terms of thermodynamic diameter characterizing the diffusive (Brownian) motion of sub-micrometer particles and 4 efficiencies in terms of aerodynamic diameter > 0,1 μm characterizing deposition by impaction or gravitational settling. Each conventional curve was developed as an average of 12 deposition curves corresponding to 12 breathing conditions ranging from sitting to heavy exercise, male vs female, and breathing mode (mouth vs nasal breathing).