Unique Enhanced Fluorescence of Some Lanthanides Induced by Heating with Reducing Sugars.
نویسندگان
چکیده
منابع مشابه
The Determination of Reducing Sugars
In the course of an investigation, still in progress, of the physiological activity of a group of soil organisms, it became necessary to determine the quantity of dextrose in a series of solutions. It was desirable to have a method as accurate as the Fehling gravimetric one but which would yield results about as quickly as by direct titration. The reducing sugar present in the 150 cc. of each o...
متن کاملThe determination of reducing sugars by titration of ferricyanide.
THE use of ferricyanide for the quantitative estimation of sugar was introduced by Hagedorn and Jensen [1923]. Their method has been extended to other sugars by Hanes [1929] and Hulme and Narain [1931]. These methods involve a preliminary heating for 15 minutes and a subsequent back titration. The fact that ferricyanide is only slightly coloured would seem to make it valueless for a direct titr...
متن کاملPolymeric complexes of 2,5-Dihydroxy-1,4-benzoquinone with some Lanthanides
Polymeric solid complexes having distorted square antiprismatic geometries of La(III), Ce(III), Pr(III), Nd(III), Sm(III), Gd(III) and Dy(III) with 2,5-Dihydroxy-1,4benzoquinone are reported. Their compositions and geometries are supported by elemental analysis, IR spectroscopy, magnetic susceptibility measurements and electronic absorption spectroscopic studies.
متن کاملReducing Powers of Various Sugars with Alkaline Copper.citrate Reagent
Scales' method for the determination of reducing sugars was modified by increasing the boiling time, and reducing values of 32 sugars were determined at various concentrations. The method as modified provides a very simple, convenient means for the quantitative determination of the various sugars. A comparison of the reducing values of different sugars reveals that the configurations of carbons...
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ژورنال
عنوان ژورنال: Analytical Sciences
سال: 1995
ISSN: 0910-6340,1348-2246
DOI: 10.2116/analsci.11.843