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The Ultraviolet Spectrophotometric Determination of Benzene in Air Samples Adsorbed on Silica Gel.

โœ Scribed by Elkins, H. B.; Pagnotto, L. D.; Comproni, E. M.


Book ID
121314489
Publisher
American Chemical Society
Year
1962
Tongue
English
Weight
584 KB
Volume
34
Category
Article
ISSN
0003-2700

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A method developed by Johnson et al. whereby lignin is determined spectrophotometrically was found to yield lignin values which showed variations of up to 10 %. The presence of water in, and the freshness of the digestive mixture together with the grade of acetic acid used and the time between dilut