An improved method for colorimetric determination of 2-propanol with furfural
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چکیده
منابع مشابه
An improved method for the colorimetric determination of phosphate.
ALL the known colorimetric methods for the determination of phosphate are liable to errors arising from (a) slight changes in acidity and concentration of reagents, and (b) the presence of interfering substances (e.g. fluorides, nitrites etc.). The following method is almost entirely independent of these disturbing factors, and possesses the added advantage of being more sensitive than those pr...
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Background and objectives: Colocynthin is the major active secondary metabolite of colocynth, Citrullus colocynthis (L.) Schrad, which has been used in traditional and ethno medicine of many countries. It could be considered as an active marker for quality control of colocynth and its herbal products. Analysis and standardization of colocynth and its herbal preparations are a critical...
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An improved method for the colorimetric determination of urea is described. The method is simple, requiring a deproteinized filtrate obtained after treatment of a small quantity of whole oxalated blood, serum, plasma or urine with 12.5% trichloracetic acid containing 50 g. activated carbon. The addition of Ehrlich's reagent to this filtrate results in the immediate production of a stable yellow...
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The Hunter (1) procedure was originally developed for the calorimetric d&&ion of minute amounts of thymine. In this procedure thymine is coupled under air with p-diazobenzenesulfonic acid in carbonate solut.ion, and a red color is subsequently produced by the addition of sodium hydroxide and hydroxylamine. Thymine was determined by this means in hydrolysates of dcsoxypentose nucleic acids (DNA)...
متن کاملan improved hplc method for determination of colocynthin in colocynth
background and objectives: colocynthin is the major active secondary metabolite of colocynth, citrullus colocynthis (l.) schrad, which has been used in traditional and ethno medicine of many countries. it could be considered as an active marker for quality control of colocynth and its herbal products. analysis and standardization of colocynth and its herbal preparations are a critical issue fo...
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ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1978
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.27.12_803