DEVELOPMENT OF A PORTABLE DEVICE TO COLLECT SULFURIC ACID AEROSOL

Progress is reported on research to develop a quantitative, interference-free method for collecting airborne sulfuric acid aerosol on a filter. Since previous research found that severe losses of sulfuric acid were caused by ammonia, ambient particulate material, and other interferents, a method was needed that converts sulfuric acid to a stable derivative for subsequent analysis. Methods evaluated for direct fixation of sulfuric acid aerosol were not found to be selective. Therefore, a sampling method was investigated that uses a combination of selective volatilization of the sulfuric acid, prefiltration of particulate interferents, and derivation of the vaporized acid on an alkali-impregnated filter. The initial stages of this current research on the volatilization-derivatization technique are described.

  • Corporate Authors:

    Southern Research Institute

    2000 Ninth Avenue South
    Birmingham, AL  USA  35205

    Environmental Sciences Research Lab

    Atmospheric Chemistry and Physics Division
    Research Triangle Pk, NC  USA  27709
  • Authors:
    • Miller, H C
    • Mason, D W
    • Barrett, W J
  • Publication Date: 1978-3

Media Info

  • Pagination: 63 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00181219
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: SORI-EAS-77-731 Intrm Rpt., 3778-12
  • Contract Numbers: EPA-68-02-2468
  • Files: TRIS
  • Created Date: Sep 14 1978 12:00AM