title: Biochemical effects of sulfuric acid mist inhalation by human subjects while at rest.
abstract: This study evaluated the effect of sulfuric acid aerosol exposure for 2 consecutive days on seven human biochemical blood parameters. A total of 20 human subjects were exposed to 100 micrograms/m3 (0.033 microM) sulfuric acid aerosol (0.5 microns mean mass diameter) for 4 hr/day for 2 consecutive days. A total of 17 human subjects were exposed to 4 hr of ambient air on both exposure days. The chemical blood parameters were measured pre- and post-exposure, and 20 hr after the second exposure: serum glutathione, red blood cell glutathione reductase, red blood cell glucose-6-phosphate dehydrogenase, lysozyme, serum glutamic oxaloacetic acid transaminase, serum vitamin E, and 2, 3-diphosphoglycerate. The results indicate no significant response in any of the seven biochemical blood parameters measured. At this level, repeated exposure did not over-burden the upper airway defenses against acid aerosol.
mesh_terms: D000293:Adolescent; D000328:Adult; D000336:Aerosols; D001769:Blood / Q000187:drug effects*; D006801:Humans; D008297:Male; D012146:Rest; D013464:Sulfuric Acids / Q000008:administration & dosage / Q000633:toxicity*; D013997:Time Factors
chemical_list: D000336:Aerosols; D013464:Sulfuric Acids