Selective Densitometric Determination of Four -Aminocephalosporins Using Ninhydrin Reagent
نویسندگان
چکیده
منابع مشابه
A modified ninhydrin reagent for the photometric determination of amino acids and related compounds.
The photometric ninhydrin method described previously (1) for use in the chromatography of amino acids has been the subject of further study during the development of the Dowex 50-X4 procedure (2). The adjustment of the pH of the effluent fractions prior to analysis required by the earlier method has been largely eliminated by increasing the strength of the buffer in the reagent 5-fold. A secon...
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Sensitive and selective, but fast and simple assays of cyanide ion in waste and natural waters, as well as in biological samples are required in case of accidental pollution with such species. Cyanide reaction with ninhydrin has been recommended for instant detection of small traces of cyanide (detection limit 1.5 ng ml-1). However, the oxidizers and heavy metal ions, such as Hg, Cu, Ag may int...
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New, simple and sensitive spectrophotometric methods for the determination of acyclovir and ganciclovirhave been developed. The method is based on the oxidation of 2, 4-dinitrophenyl hydrazine (2, 4 DNP) and coupling of the oxidized product with acyclovir and ganciclovirto give intensely coloredchromogen. Acyclovir and ganciclovirshowed maximum absorbance at 414 nm and 450 nm with linearity was...
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متن کاملUsing ninhydrin to detect gravesoil.
Some death scene investigations commence without knowledge of the location of the body and/or decomposition site. In these cases, it is necessary to locate the remains or the site where the body decomposed prior to movement. We hypothesized that the burial of a mammalian cadaver will result in the release of ninhydrin reactive nitrogen (NRN) into associated soil and that this reaction might hav...
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ژورنال
عنوان ژورنال: Journal of Chromatographic Science
سال: 2010
ISSN: 0021-9665,1945-239X
DOI: 10.1093/chromsci/48.1.68