Determination of moisture by Karl Fischer coulometric reagent composed of new bases.
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چکیده
منابع مشابه
Determination of Moisture in Powder and Lyophilised Saffron (Crocus sativus L.) by Karl Fischer Method
Saffron is a spice obtained from the dried stigmas of the purple-flowered saffron crocus (Crocus sativus L.). The determination of the water content in saffron is very important in order to establish its microbiological stability and consequently to determine the commercial value. The average moisture content in dried saffron powder ranges between 10-12% causing a slow degradation of the produc...
متن کاملSome remarks on Mechanism and kinetics of the coulometric variant of the Karl-Fischer titration reaction
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متن کاملDetermination of water in organic solvents by flow-injection analysis with Karl Fischer reagent and a biamperometric detection system.
A flow-injection system with a biamperometric flow-through detector provided with two platinum plate electrodes was tested for the determination of water with a two-component pyridine-free Karl Fischer reagent. The response was shown to be linear in the concentration range 0.03-0.11% water in methanol, ethanol or 2-propanol, with methanol as the carrier solvent. The maximum sampling frequency w...
متن کاملNew Approaches to Moisture Determination in Complex Matrices based on the Karl Fischer Reaction in Methanolic and Non-Alcoholic Media
Moisture determination is of great importance in the production and use of many substances. For example, the moisture content can affect the efficiency of a chemical reaction or determine the shelf life of pharmaceuticals or foods. The standard method for moisture determination is Karl Fischer (KF) titration, based on either volumetry or coulometry. This thesis concerns new approaches to trace ...
متن کاملDetermination of trace water in gas samples by an improved Karl Fischer coulometer.
The determination of trace water in gas samples, such as isobutene, chloromethane (polymeric staple gases) and SF6 by a conventional Karl Fischer coulometer is very difficult, because of the adsorption of trace water on the surface of sample pipe, the gasification of the liquefied samples, and the migration of moisture into the measuring cell from the surroundings. To solve these problems, we i...
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ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1984
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.33.12_638