title: Aerosols generated by hardcopy devices and other electrical appliances.
abstract: In recent years the pollution of indoor air with ultrafine particles has been an object of intensive research. Several studies have concurred in demonstrating that outdoor air makes only a limited contribution to polluting indoor air with ultrafine particles, provided significant sources in the immediate neighborhood are absent. Nowadays, electrical devices operated in homes and offices are identified as particle emission sources. A comparison of the emission rates can be made by calculating the total number of particles released with respect to the operating time. The identified particles are condensed semi-volatile organic compounds with a low percentage of non-volatile inorganic components. To characterize the indoor exposure to airborne particles, an algorithm has been developed which permits a realistic calculation of the particle intake and deposition in the human respiratory tract from measured size and time resolved particle number concentrations following the model of the International Commission on Radiological Protection.
authors.affiliation: Fraunhofer WKI, Department of Material Analysis and Indoor Chemistry, Braunschweig, Germany. tunga.salthammer@wki.fraunhofer.de
authors.forename: Tunga
authors.initials: T
authors.lastname: Salthammer
authors.forename: Tobias
authors.initials: T
authors.lastname: Schripp
authors.forename: Erik
authors.initials: E
authors.lastname: Uhde
authors.forename: Michael
authors.initials: M
authors.lastname: Wensing
mesh_terms: D000336:Aerosols / Q000009:adverse effects / Q000032:analysis*; D000393:Air Pollutants / Q000009:adverse effects / Q000032:analysis*; D016902:Air Pollution, Indoor / Q000009:adverse effects / Q000032:analysis*; D004560:Electricity / Q000009:adverse effects*; D004781:Environmental Exposure / Q000009:adverse effects*; D004784:Environmental Monitoring; D006794:Household Articles; D006801:Humans
chemical_list: D000336:Aerosols; D000393:Air Pollutants