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

Substance: water					Other Names: 

Formula: H2O						CAS-No.: 7732-18-5

Study: UV/Vis absorption spectrum

                
Authors: R.M. Pope, E.S. Fry 

Title: Absorption spectrum (380–700 nm) of pure water. II. Integrating cavity measurements

Journal/Source: Applied Optics, 36 (33), 8710-8723, (1997); http://dx.doi.org/10.1364/AO.36.008710


Data: table, diagram

Energy/Wavelength range: 380 - 700 nm

Resolution: 

Temperature: 295 K

Temperature dependence: 

Pressure/Concentration:

Phase: liquid

pH:


Comments: Definitive data on the absorption spectrum of pure water from 380 to 700 nm have been obtained with an integrating cavity 
technique. The results are in good agreement with those recently obtained by our group with a completely independent photothermal technique.
As before, we find that the absorption in the blue is significantly lower than had previously been generally believed and that the absorption 
minimum is at a significantly shorter wavelength, i.e., 0.0044 ± 0.0006 m-1 at 418 nm.

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