science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2022

Substance: nitrous acid					Other Names: nitrosyl hydroxide

Formula: HONO; HNO2					CAS-No.: 7782-77-6	PubChem: CID 24529

Study: UV absorption cross sections

                
Authors: L. Wang, J. Zhang

Title: Detection of nitrous acid by cavity ring-down spectroscopy

Journal/Source: Environ. Sci. Technol., 34, 4221-4227, (2000); https://doi.org/10.1021/es0011055


Data: table, diagram

Energy/Wavelength range: ~ 352 - 357 nm

Resolution: < 0.1 nm

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration: 

Phase: gas

pH:


Comments: At the maximum absorption wavelength (354.2 nm), HONO can be detected with a low limit of 5 parts per billion (ppb) in 15 s sampling time.