Nitrogen dioxide measurement method characterization at the GRI conventional research house. Topical report, August-September 1989
Experiments were conducted to measure NO2 concentrations using three types of instruments: (1) Chemiluminescent NO/NOx analyzer (EPA reference method), (2) Chemiluminiscent NO2 analyzer using luminol solution, and (3) Electrochemical NO2 analyzer. The electrochemical and luminol analyzers were evaluated in terms of their linearity, bias and correlation relative to the chemiluminescent analyzer, and interference by nitric oxide (NO) and nitrous acid (HONO). The chemiluminescent analyzer measured concentrations in samples that included some that were passed through an acid denuder to remove HONO. The electrochemical analyzers were small and portable, but were not as accurate and precise as the other types. The luminol based analyzers had good accuracy at concentrations below about 120 ppb. The luminol analyzer was not sensitive to HONO.
- Research Organization:
- ElectroCom GARD Ltd., Des Plaines, IL (United States)
- OSTI ID:
- 56377
- Report Number(s):
- PB--95-200549/XAB; CNN: Contract GRI-5094-250-3084
- Country of Publication:
- United States
- Language:
- English
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