Results 11 to 20 of about 48,569 (262)
Indirect spectrophotometric method for determination of captopril using Cr(VI) and diphenylcarbazide
Química Nova, 2012 A spectrophotometric method for the indirect determination of captopril (CP) in pharmaceutical formulations is proposed. The proposed procedure is based on the oxidation of captopril by potassium dichromate and the determination excess oxidant on the ...
Zenovia Moldovan +3 more
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Molecules, 2009 Coenzyme A (CoA or CoASH) is one of the most important biologically active compounds, and for this reason a reliable, fast and simple determination of CoASH is needed.
Josipa Giljanović, Ante Prkić
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Spectrophotometric and derivative spectrophotometric determination of aluminium with Hydroxynaphthol Blue [PDF]
Talanta, 1994 The reaction of aluminium(III) with Hydroxynaphtol Blue (HNB) in aqueous media at apparent pH 5.5 results in a red complex that is stable for at least 4 hr. Beer's Law is obeyed up to 1.6 microg/ml of aluminium(III) with an apparent molar absorptivity of 1.66 x 10(4) l.mol(-1). cm(-1) at 569 nm.
S L, Ferreira +4 more
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Direct spectrophotometric measurement of supra-physiological levels of ascorbate in plasma
Redox Biology, 2016 Background: Supra-physiological concentrations of ascorbate, vitamin C, in blood, greater than 1 mM, achieved through intravenous administration (IV), are being tested in clinical trials to treat human disease, e.g. cancer.
Jordan R. Witmer +5 more
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The spectrophotometric determination of diacetyl
Analytical Biochemistry, 1989 A new assay for the determination of diacetyl based on the colorimetric reaction with creatine and alpha-naphthol in an alkaline medium was developed. After a determination of optimal concentrations of the necessary reagents, the assay could easily detect as little as 0.5 micrograms of diacetyl.
J, Mattessich, J R, Cooper
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Analytical application of the reaction system phenyl fluorone-hydrogen peroxide for the kinetic determination of cobalt and tin traces by spectrophotometry in ammonia buffer media [PDF]
Hemijska Industrija, 2013 The present paper describes two new, simple, rapid, selective and sensitive kinetic spectrophotometric methods for Co(II) and Sn(II) determination in solution at room temperature, based on their effect on phenyl fluorone (PF) oxidation by ...
Rančić Sofija M. +2 more
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مجلة بغداد للعلوم, 2014 The new organic reagent 2-[Benzo thiazolyl azo]-4,5-diphenyl imidazole was prepared and used as complexing agent for separation and spectrophotometric determination of Cu2+ ion in some samples include plants, soil, water and human blood serum.
Baghdad Science Journal
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A Review on Analytical Methods for Piperazine Determination
NTU Journal of Pure Sciences, 2022 Piperazine compounds mediate their anthelmintic action by generally paralyzing parasites, allowing the host body to easily remove or expel the invading organism. It is an anthelmintic drug in human as well as in veterinary medicine.
Usra Ibrahim Saeed Al-Neaimy +2 more
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Tikrit Journal of Pure Science, 2023 This research introduce simple & fast spectrophotometric method for determination of Salbutamol Sulphate drug by Oxidation Coupling with 4-aminoantipyrine(4-AAP) and NaIO4 as Oxidant reagent. Purple color solution is found which give maximum absorbance
Asmaa Ahmed Mohammed
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Spectrophotometric determination of Salbutamol sulphate by coupling with diazotized 2,4-dinitroaniline [PDF]
مجلة التربية والعلم, 2013 A quick, convenient and sensitive method has been developed for the determination of microgram amounts of salbutamol sulphate in its pure form and pharmaceutical preparations. The method is based on the coupling reaction of the drug with diazotized 2,4 -
M. S. Saleem +2 more
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