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Title: The hygroscopicity of indoor aerosol particles

A system to study the hygroscopic growth of particle was developed by combining a Tandem Differential Mobility Analyzer (TDMA) with a wetted wall reactor. This system is capable of mimicking the conditions in human respiratory tract, and measuring the particle size change due to the hygroscopic growth. The performance of the system was tested with three kinds of particles of known composition, NaCl, (NH{sub 4}){sub 2}SO{sub 4}, and (NH{sub 4})HS0{sub 4} particles. The hygroscopicity of a variety of common indoor aerosol particles was studied including combustion aerosols (cigarette smoking, cooking, incenses and candles) and consumer spray products such as glass cleaner, general purpose cleaner, hair spray, furniture polish spray, disinfectant, and insect killer. Experiments indicate that most of the indoor aerosols show some hygroscopic growth and only a few materials do not. The magnitude of hygroscopic growth ranges from 20% to 300% depending on the particle size and fraction of water soluble components.
Authors:
Publication Date:
OSTI Identifier:
10178886
Report Number(s):
DOE/ER/61029--14
ON: DE93040689; TRN: 93:019204
DOE Contract Number:
FG02-90ER61029
Resource Type:
Thesis/Dissertation
Resource Relation:
Other Information: TH: Thesis (Ph.D.); PBD: Jul 1993
Research Org:
Clarkson Univ., Potsdam, NY (United States). Dept. of Chemistry
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; 54 ENVIRONMENTAL SCIENCES; PARTICULATES; HYGROSCOPICITY; INDOOR AIR POLLUTION; INHALATION; RESPIRATORY SYSTEM; DEPOSITION; BIOLOGICAL LOCALIZATION; AEROSOL GENERATORS 560300; 540220; CHEMICALS METABOLISM AND TOXICOLOGY; CHEMICALS MONITORING AND TRANSPORT