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Title: Real time infrared aerosol analyzer

Abstract

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.

Inventors:
 [1];  [2];  [3]
  1. (Countryside, IL)
  2. (Bourbonnais, IL)
  3. (Naperville, IL)
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
867461
Patent Number(s):
4942297
Assignee:
United States of America as represented by United States (Washington, DC) ANL
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
time; infrared; aerosol; analyzer; apparatus; analyzing; aerosols; essentially; virtual; impactor; separates; coarse; particles; fine; ultrafine; sample; captured; ptfe; filters; impact; internal; light; reflection; element; composition; quantity; filter; measured; alternately; passing; spectrophotometry; identify; ultrafine particles; virtual impactor; coarse particle; coarse particles; infrared light; internal reflection; fine particles; fine particle; particles impact; ultrafine particle; aerosol sample; /250/356/

Citation Formats

Johnson, Stanley A., Reedy, Gerald T., and Kumar, Romesh. Real time infrared aerosol analyzer. United States: N. p., 1990. Web.
Johnson, Stanley A., Reedy, Gerald T., & Kumar, Romesh. Real time infrared aerosol analyzer. United States.
Johnson, Stanley A., Reedy, Gerald T., and Kumar, Romesh. Mon . "Real time infrared aerosol analyzer". United States. https://www.osti.gov/servlets/purl/867461.
@article{osti_867461,
title = {Real time infrared aerosol analyzer},
author = {Johnson, Stanley A. and Reedy, Gerald T. and Kumar, Romesh},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

Patent:

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