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Quantification of Ammonium in Aerosols by Near-Infrared Photothermal Spectroscopy

Publication ,  Journal Article
Röhl, R; Childers, JW; Palmer, RA
Published in: Applied Spectroscopy
July 1985

The potential of near-infrared photothermal spectroscopy for the analysis of aerosols collected on filter membranes is demonstrated. Laboratory-generated aerosols consisting of ammonium sulfate and soot are collected on Teflon® filters by the use of a dichotomous sampler. The N-H overtone/combination band at 2110 nm is used to determine ammonium in these mixtures. The presence of soot is shown to have a deleterious effect on the detectability of ammonium. The extent of this limitation is examined with the employment of well-characterized samples. An empirical expression, based on Beer's law, is developed which relates the photothermal signal to the relative soot and ammonium sulfate loadings.

Duke Scholars

Published In

Applied Spectroscopy

DOI

EISSN

1943-3530

ISSN

0003-7028

Publication Date

July 1985

Volume

39

Issue

4

Start / End Page

668 / 672

Publisher

SAGE Publications

Related Subject Headings

  • Analytical Chemistry
  • 0913 Mechanical Engineering
  • 0306 Physical Chemistry (incl. Structural)
  • 0301 Analytical Chemistry
 

Citation

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ICMJE
MLA
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Röhl, R., Childers, J. W., & Palmer, R. A. (1985). Quantification of Ammonium in Aerosols by Near-Infrared Photothermal Spectroscopy. Applied Spectroscopy, 39(4), 668–672. https://doi.org/10.1366/0003702854250086
Röhl, Raimund, Jeffrey W. Childers, and Richard A. Palmer. “Quantification of Ammonium in Aerosols by Near-Infrared Photothermal Spectroscopy.” Applied Spectroscopy 39, no. 4 (July 1985): 668–72. https://doi.org/10.1366/0003702854250086.
Röhl R, Childers JW, Palmer RA. Quantification of Ammonium in Aerosols by Near-Infrared Photothermal Spectroscopy. Applied Spectroscopy. 1985 Jul;39(4):668–72.
Röhl, Raimund, et al. “Quantification of Ammonium in Aerosols by Near-Infrared Photothermal Spectroscopy.” Applied Spectroscopy, vol. 39, no. 4, SAGE Publications, July 1985, pp. 668–72. Crossref, doi:10.1366/0003702854250086.
Röhl R, Childers JW, Palmer RA. Quantification of Ammonium in Aerosols by Near-Infrared Photothermal Spectroscopy. Applied Spectroscopy. SAGE Publications; 1985 Jul;39(4):668–672.
Journal cover image

Published In

Applied Spectroscopy

DOI

EISSN

1943-3530

ISSN

0003-7028

Publication Date

July 1985

Volume

39

Issue

4

Start / End Page

668 / 672

Publisher

SAGE Publications

Related Subject Headings

  • Analytical Chemistry
  • 0913 Mechanical Engineering
  • 0306 Physical Chemistry (incl. Structural)
  • 0301 Analytical Chemistry