Standard test method for ultraviolet absorbance and absorptivity of petroleum products
This method covers the measurement of the ultraviolet absorption of a variety of petroleum products. It covers the absorbance of liquids of the absorptivity of liquids or the absorptivity of liquids and solids, or both, at wavelengths in the region 220 to 400 nm of the spectrum. The use of this method implies that the conditions of measurement - wavelength, solvent, if any, sample path length, and sample concentration - are specified by reference to one of the examples of the application of this method in the appendixes or by a statement of other conditions of measurement. Examples of the application of this method are the determination of the absorbance of white mineral oil, the absorptivity of refined petroleum wax, and the absorptivity of USP petrolatum. The ultraviolet absorbance of a liquid is determined by measuring the absorption spectrum of the undiluted liquid in a cell of known path length under specified conditions. The ultraviolet absorptivity of a solid or a liquid is determined by measuring the absorbance, at specified wavelengths, of a solution of the liquid or solid at known concentration in a cell of known path length.
- OSTI ID:
- 6607121
- Journal Information:
- Annu. Book ASTM Stand.; (United States), Vol. 24; Other Information: ANSI/ASTM-D--2008-80
- Country of Publication:
- United States
- Language:
- English
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