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Dosimeter for oxides of nitrogen.

Authors
Ferber-BI; Sharp-FA; Freedman-RW
Source
Am Ind Hyg Assoc J 1976 Jan; 37(1):32-36
NIOSHTIC No.
00059341
Abstract
A simple, lightweight, prototype dosimeter, based on wet chemical principles, has been developed for personal monitoring of nitrogen dioxide. A simple modification provides for the determination of nitrogen oxides. This device requires no auxiliary equipment and is intrinsically safe for use in coal mines. In use, nitrogen dioxide permeates a membrane and is absorbed in acidic aqueous solution containing hydrogen peroxide. The latter oxidizes nitrogen dioxide to nitrate. When a total nitrogen oxides determination is required, an oxidizing prefilter converts nitric oxide to nitrogen dioxide prior to conversion to nitrate in solution. The nitrate is determined in the laboratory with a specific ion electrode. The nitrogen dioxide or total nitrogen oxides is determined from the nitrate found with reasonably good precision and accuracy. Effects due to dosimeter orientation, liquid evaporation, and temperature were insignificant.
Keywords
Dosimetry; Personal-protective-equipment; Monitoring-systems; Monitors; Nitrates; Nitrogen-compounds; Nitrogen-oxides; Analytical-methods; Analytical-instrumentation; Air-quality-measurement; Oxidation; Electrical-measurement; Measurement-instrumentation; Air-sampling; Air-analysis; Microanalysis; Air-contaminants; Air-monitoring; Chemical-reactions
CODEN
AIHAAP
CAS No.
10102-44-0; 10102-43-9; 7722-84-1
Publication Date
19760101
Document Type
Journal Article
Fiscal Year
1976
NTIS Accession No.
NTIS Price
Identifying No.
OP 17-76
Issue of Publication
1
ISSN
0002-8894
NIOSH Division
PRC
Source Name
American Industrial Hygiene Association Journal
State
PA
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