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

Substance: nitrate anion				Other Names: dihydrogen dioxide

Formula: NO3-						CAS-No.: 14797-55-8

Study: quantum yield study; molar absorptivities


Authors: L. Chu, C. Anastasio

Title: Quantum Yields of Hydroxyl Radical and Nitrogen Dioxide from the Photolysis of Nitrate on Ice

Journal/Source: J. Phys. Chem. A, 107 (45), 9594–9602, (2003), DOI: 10.1021/jp0349132


Data: table, diagram

Energy/Wavelength range: 280 - 360 nm

Resolution: 

Temperature: 278 - 298 K

Temperature dependence: 

Pressure/Concentration:

Phase: aqueous solution, ice

pH:


Comments: The quantum yields for •OH (PHI (OH)) at 263 K were independent of nitrate concentration and illumination 
wavelength (lambda > 300 nm), but were dependent upon pH. Values of PHI (OH) decreased from (3.6 ± 0.6) × 10-3 at 
pH 7.0 to (2.1 ± 0.8) × 10-3 at pH 2.0.
The molar absorptivities of NO3-  (T = 278 - 298 K) are presented.

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