Publisher's Synopsis
Excerpt from The Effect of Certain Dissolved Substances on the Infra-Red Absorption of Water
The most intense absorption bands of water occur at about 3 u and 6 n. Nearer the visible spectrum there are four much less intense bands which differ greatly among themselves in intensity. These bands were located by earlier observers at about n, p, u and u, this order being also one of increasing intensity. Jones and his co-workers studied the effect of dissolved substances on the absorption of water in the spectral region including the first two of these bands. Grantham's results on the effect of the alkaline hydroxides are confined to the absorption band at u. Angstrom worked in the near infra-red, but obtained results only for the intense absorption band at 3 p.
The absorption bands of water at 3 p and 6 n are so intense that extremely thin layers are necessary for their study, so that a quantitative comparison of the absorption of solutions and water would be very difficult. The other four absorption bands mentioned above are such that measurable thicknesses can be used and an accurate comparison made. It was the purpose of this investigation to study the effect of various dissolved substances on the absorption of water throughout the spectral region containing these four absorption bands.
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