Fluorometric determination of aluminum in iron and steel with 2, 4-dihydroxybenzaldehyde-semicarbazone
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چکیده
منابع مشابه
Kinetic fluorometric determination of aluminum in serum.
We describe a simple fluorometric method for determining aluminum in serum samples by monitoring the rate of reaction of 2-hydroxy-1-naphthaldehyde-p-methoxybenzoylhydrazone with aluminum ions. The emission of the resulting fluorescent metal-chelate formed is measured at 475 nm. Aluminum was measured in the supernate of serum after proteins were removed by precipitation with concentrated nitric...
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The 2-aminothiophenol-based fluorometric assay of Nakano et al. (1973, J. Pharm. Soc. Jpn. 93, 350-353) for monosaccharides has been modified to improve the speed, applicability, and sensitivity of the method. The improved assay is applicable to complex carbohydrates as well as to monosaccharides. Less than 50 ng of carbohydrate in a final volume of 2 ml can be quantitatively measured within 30...
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Determination of molybdenum(VI) by direct spectrophotometry and simultaneous determination of molybdenum(VI) and titanium(IV) are reported. Molybdenum(VI) gives a golden yellow colour with 2,4dihydroxybenzaldehyde isonicotinoyl hydrazone with a 1:2 metal-reagent stoichiometry at pH 1.5. The complex shows an absorption maximum at 445 nm with molar absorptivity and Sandell's sensitivity of 1.02x1...
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We describe a simple and sensitive HPLC method for quantifying aluminum (Al) in biological fluids by measuring the fluorescence of the Al-lumogallion complex (excitation wavelength 500 nm, emission wavelength 575 nm). Serum samples are deproteinized with 0.83 mol/L perchloric acid and centrifuged; the supernates are mixed with lumogallion reagent. Urine samples are pretreated with sodium hydrox...
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Acetophenone 2’, 4’dihydroxy semicarbazone [A24DHS], a new analytical reagent is proposed as a sensitive and selective spectrophotometric reagent for Vanadium (V). The reagent A24DHS is synthesized in the laboratory and characterized by NMR, IR and elemental analysis. A selective spectrophotometric method is presented for the trace determination of Vanadium using A24DHS as spectrophotometric re...
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ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1979
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.28.2_127