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Double isotope method for characterizing hygroscopic selenious acid aerosols used in inhalation exposures

Journal Article · · Am. Ind. Hyg. Assoc. J.; (United States)
Methods of generating and characterizing selenious acid aerosols for use in deposition and toxicity studies are described. Selenious acid aerosols were nebulized and heat treated at varied temperatures. Because selenious acid is hygroscopic, a solution containing /sup 3/H/sub 2/O and /sup 75/Se was nebulized to determine the water content in selenium aerosols after generation. The stable aerosol was a hydrate of selenious acid, H/sub 2/SeO/sub 3/ 1/2 H/sub 2/O, at New Mexico ambient relative humidity (ca. 20%). The mass median aerodynamic diameter of the collected droplets was 0.6 ..mu..m with a geometric standard deviation of 1.3. 24 references, 4 figures, 1 table.
Research Organization:
Lovelace Biomedical and Environmental Research Inst., Albuquerque, NM
DOE Contract Number:
AC04-76EV01013
OSTI ID:
6030523
Journal Information:
Am. Ind. Hyg. Assoc. J.; (United States), Journal Name: Am. Ind. Hyg. Assoc. J.; (United States) Vol. 45:8; ISSN AIHAA
Country of Publication:
United States
Language:
English