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Title: Real time infrared aerosol analyzer

Apparatus for analyzing aerosols in essentially real time includes a virtual impactor which separates coarse particles from fine and ultrafine particles in an aerosol sample. The coarse and ultrafine particles are captured in PTFE filters, and the fine particles impact onto an internal light reflection element. The composition and quantity of the particles on the PTFE filter and on the internal reflection element are measured by alternately passing infrared light through the filter and the internal light reflection element, and analyzing the light through infrared spectrophotometry to identify the particles in the sample.
Authors:
 [1] ;  [2] ;  [3]
  1. (Countryside, IL)
  2. (Bourbonnais, IL)
  3. (Naperville, IL)
Publication Date:
OSTI Identifier:
867461
Report Number(s):
US 4942297
DOE Contract Number:
W-31109-ENG-38
Resource Type:
Patent
Research Org:
Argonne National Laboratory (ANL), Argonne, IL
Country of Publication:
United States
Language:
English
Subject:
time; infrared; aerosol; analyzer; apparatus; analyzing; aerosols; essentially; time; virtual; impactor; separates; coarse; particles; fine; ultrafine; particles; aerosol; sample; coarse; ultrafine; particles; captured; ptfe; filters; fine; particles; impact; internal; light; reflection; element; composition; quantity; particles; ptfe; filter; internal; reflection; element; measured; alternately; passing; infrared; light; filter; internal; light; reflection; element; analyzing; light; infrared; spectrophotometry; identify; particles; sample; ultrafine particles; ultrafine particles; virtual impactor; coarse particle; coarse particles; infrared light; internal reflection; fine particles; fine particles; fine particles; fine particle; fine particle; fine particle; particles impact; ultrafine particle; ultrafine particle; aerosol sample /250/356/