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Continuous determination of nitric oxide and nitrogen dioxide in the atmosphere

Abstract

Continuous determinations of nitric oxide and nitrogen dioxide in that atmospheric air by the use of a modified Saltzman reagent is described. Measurement was made intermittently, once every 30 min., by an automatic continuous analyzer equipped with a single-path colorimeter. The response of the analyzer was obtained as an average of the concentration of nitrogen oxides over a period of 25 min. Two bubblers were used for absorbing nitrogen oxides into the modified Saltzman reagent, whose transmittance was measured for the determination. One bubbler was designed to absorb nitrogen dioxide, and the other, nitric oxide plus nitrogen dioxide after the oxidation of the nitric oxide by permanganate. The oxidizing efficiency of the permanganate was 96-100%. The acetic acid in the Saltzman reagent was replaced with n-propyl alcohol in the modified Saltzman reagent; the spontaneous coloration and corrosive quality of the reagent was decreased by this substitution. The concentration of nitric oxide was obtained from the difference between the two responses of the analyzer, while the concentration of nitrogen dioxide could be read directly from the indication of the recorder. The transmittance ratio method was applied to the measurements, accurate determinations were possible, even at high blank values. Therefore, the reagent  More>>
Publication Date:
Oct 01, 1966
Product Type:
Journal Article
Reference Number:
EDB-86-005171
Resource Relation:
Journal Name: Bull. Chem. Soc. Jpn.; (Japan); Journal Volume: 39:10
Subject:
54 ENVIRONMENTAL SCIENCES; NITRIC OXIDE; AIR POLLUTION MONITORING; NITROGEN DIOXIDE; AIR POLLUTION; ECOLOGICAL CONCENTRATION; EXPERIMENTAL DATA; REAGENTS; CHALCOGENIDES; DATA; INFORMATION; MONITORING; NITROGEN COMPOUNDS; NITROGEN OXIDES; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; POLLUTION; 500200* - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989)
OSTI ID:
6382714
Research Organizations:
Keio Univ., Tokyo, Japan
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: BCSJA
Submitting Site:
HEDB
Size:
Pages: 2173-2178
Announcement Date:
Dec 01, 1985

Citation Formats

Yanagisawa, S, Yamate, N, Mitsuzawa, S, and Mori, M. Continuous determination of nitric oxide and nitrogen dioxide in the atmosphere. Japan: N. p., 1966. Web. doi:10.1246/bcsj.39.2173.
Yanagisawa, S, Yamate, N, Mitsuzawa, S, & Mori, M. Continuous determination of nitric oxide and nitrogen dioxide in the atmosphere. Japan. https://doi.org/10.1246/bcsj.39.2173
Yanagisawa, S, Yamate, N, Mitsuzawa, S, and Mori, M. 1966. "Continuous determination of nitric oxide and nitrogen dioxide in the atmosphere." Japan. https://doi.org/10.1246/bcsj.39.2173.
@misc{etde_6382714,
title = {Continuous determination of nitric oxide and nitrogen dioxide in the atmosphere}
author = {Yanagisawa, S, Yamate, N, Mitsuzawa, S, and Mori, M}
abstractNote = {Continuous determinations of nitric oxide and nitrogen dioxide in that atmospheric air by the use of a modified Saltzman reagent is described. Measurement was made intermittently, once every 30 min., by an automatic continuous analyzer equipped with a single-path colorimeter. The response of the analyzer was obtained as an average of the concentration of nitrogen oxides over a period of 25 min. Two bubblers were used for absorbing nitrogen oxides into the modified Saltzman reagent, whose transmittance was measured for the determination. One bubbler was designed to absorb nitrogen dioxide, and the other, nitric oxide plus nitrogen dioxide after the oxidation of the nitric oxide by permanganate. The oxidizing efficiency of the permanganate was 96-100%. The acetic acid in the Saltzman reagent was replaced with n-propyl alcohol in the modified Saltzman reagent; the spontaneous coloration and corrosive quality of the reagent was decreased by this substitution. The concentration of nitric oxide was obtained from the difference between the two responses of the analyzer, while the concentration of nitrogen dioxide could be read directly from the indication of the recorder. The transmittance ratio method was applied to the measurements, accurate determinations were possible, even at high blank values. Therefore, the reagent was used repeatedly by cycling it on the basis of measuring the difference in the coloration of the reagent before and after the absorption of nitrogen oxides. The analyzer could be used for a long period without changing the reagent.}
doi = {10.1246/bcsj.39.2173}
journal = []
volume = {39:10}
journal type = {AC}
place = {Japan}
year = {1966}
month = {Oct}
}