science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: nitrous acid					Other Names: dioxonitric(III) acid

Formula: HNO2; HONO					CAS-No.: 7782-77-6

Study: uv absorption cross sections

                
Authors: P. Pagsberg, E. Bjergbakke, E. Ratajczak, A. Sillesen

Title: Kinetics of the gas phase reaction OH + NO (+M) --> HONO (+M) and the determination of the UV absorption cross sections of HONO

Journal/Source: Chem. Phys. Lett., 272, 383-390, (1997); http://dx.doi.org/10.1016/S0009-2614(97)00576-9


Data: table, diagram

Energy/Wavelength range: 320 - 400 nm

Resolution: 0.4 nm; 0.2 nm

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration:

Phase: gas

pH:


Comments: The UV spectrum of HONO was recorded in the range 320-400 nm and an absolute absorption cross section of 
sigma = (5.02 ± 0.76) × 10-19 cm2 molecule-1 has been determined for the strongest band of HONO located at 354.2 nm. 
Differential absorption cross sections to be used for field measurements of HONO were also investigated.

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