Detection and Identification of Alcohols, Alkoxy Groups, Lignin, and Wood by Gas Liquid Chromatography.

Sample preparation effects in matrix‐assisted laser desorption/ionisation time‐of‐flight mass spectrometry of partially depolymerised carboxymethyl cellulose

“…Numerous techniques have been developed for the determination of the many characteristics of cellulose derivatives, such as average molar mass and molar mass distribution,4,5 DS,6–13 and the average distribution of the substituents within the glucose monomer 14–19. Such average properties have not always proved sufficient to allow the interpretation of certain physicochemical properties of the cellulose derivatives, as revealed in batch variations in functional tests and technical applications.…”

Potentiometric determination of cyanide with an ion selective electrode. Application to cyanogenic glycosides in Sudan grasses

“…This procedure is good for qualitative polymer analysis but has limited quantitative application. Determination of maleate and acrylate esters in polymers by Zeisel cleavage of the acrylate ester linkages, followed by gas chromatographic analysis of the reaction products, has also been reported (9)(10)(11)(12)(13)(14)(15)(16)(17)(18). We chose the Zeisel reaction (Figure 1) for the cleavage of the acrylic esters and gas chromatography for the analysis of the alkyl iodides formed.…”

Short Note

“…The most widely used procedure is the method of Vieb ck and Schwappach (1930), which involves the quantitative cleavage of the methoxyl functional group with hydriodic acid to form methyl iodide. Some GC procedures call for use of a distillation apparatus, which is one of the shortcomings found in the titrimetric methods (Platonov and Maiorova 1993;Sporek and Danyi 1962). After reviewing several methods for determining methoxyl content in lignins, Zakis (1994) recommended using a titrimetric procedure due to the lack of time and accuracy advantages of the GC methods reported thus far.…”