Studies on Spectrophotometry. X. Determination of Microgram
نویسندگان
چکیده
منابع مشابه
Microgram analysis; further studies of determination of glucose and its application to the determination of sucrose.
Commonly, microanalysis of plant sugars is conducted on a mg. scale (1); on the microgram level, a general method appears to be lacking. Some calorimetric methods suitable for determination of microgram quantities of sugars are available, but for a combination of high sensitivity and good accuracy these are not very satisfactory. Anthrone, for example, has been used recently to determine sucros...
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A procedurefor the determination of microgramquantities of copper in biologicmaterial is described. The sample is wet-ashed with a nitric acid-perchloric acid mixture. The copper is extracted from an alkaline solutionof the ash with a solutionof diphenylcarbazide in benzene. Absorbanceof the red complex is read at 540 m1&. The copperin as little as0.5 ml. of serum can be determined and the meth...
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A method is presented for estimation of inorganic boron in mammalian tissues, blood, cerebrospinal fluid, and urine. The procedure is simple and rapid, qualifying it particularly to meet needs in clinical chemistry. The mammalian tissues are first enzymatically digested and extracted; then the deproteinized extract is allowed to react with quinalizarin in concentrated sulfuric acid. The intensi...
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Two new spectrophotometric methods using permanganate as the oxidimetric reagent for the determination of olanzapine (OLP) were developed and validated as per the current ICH guidelines. The methods involved the addition of known excess of permanganate to OLP in either acid or alkaline medium followed by the determination of unreacted permanganate at 550 nm (method A) or bluish-green color of m...
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A flameless atomic-absorption system has been developed for the determination of low concentrations of mercury in gaseous, solid and liquid samples of organic and inorganic materials.
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ژورنال
عنوان ژورنال: Nippon kagaku zassi
سال: 1955
ISSN: 0369-5387,2185-0917
DOI: 10.1246/nikkashi1948.76.610