THE COLORIMETRIC DETERMINATION OF FRUCTOSAN IN PLANT MATERIAL

A sensitive colorimetric determination of fluoride in drinking water has been developed using a polymeric zirconium complex of 5-(2-Carboxyphenylazo)-8-Hydroxyquinoline as fluoride reagents. The method allowed a reliable determination of fluoride in range of (0.0-1.5) mg L-1. The molar absorptivity of the complex formation is 7695 ± 27 L mol-1 cm-1 at 460 nm. The sensitivity, detection limit, quantitation limit, and percentage recovery for 1.0 mg L-1 fluoride for the proposed method were found to be 0.353 ± 0.013 μg mL-1, 0.1 mg L-1, 0.3 mg L-1, and 101.7 ± 4.1, respectively.

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Colorimetric Determination of Amoxicillin in Pure and some Pharmaceutical Formulations Via Reaction with Potassium Permanganate as Oxidant Reagent

International Journal of Pharmaceutical Quality Assurance ◽

10.25258/ijpqa.10.2.2 ◽

2019 ◽

Vol 10 (02) ◽

Author(s):

Abbas Shebeeb Al-kadumi ◽

Sahar Rihan Fadhel ◽

Mohammed Abdullah Ahmed ◽

Luma Amer Musa

Keyword(s):

Potassium Permanganate ◽

Pharmaceutical Preparations ◽

Pharmaceutical Formulations ◽

Atomic Emission ◽

Basic Medium ◽

Photometric Method ◽

Colorimetric Determination ◽

Spectrophotometric Methods ◽

Label Claim

We proposed two simple, rapid, and convenient spectrophotometric methods are described for the determination of Amoxicillin in bulk and its pharmaceutical preparations. They are based on the measurement of the flame atomic emission of potassium ion (in first method) and colorimetric determination of the green colored solution for manganite ion at 610 nm formed after reaction of Amoxicillin with potassium permanganate as oxidant agent (in the second method) in basic medium. The working conditions of the methods were investigated and optimized. Beer's law plot showed a good correlation in the concentration range of 5-45 μg/ml. The detection limits and relative standared deviations were (2.573, 2.814 μg/ml) (2.137, 2.498) for the flame emission photometric method and (1.844, 2.016 μg/ml) (1.645,1.932) for colorimetric methods for capsules and suspensions respectively. The methods were successfully applied to the determination of Amoxicillin in capsules and suspensions, and the obtained results were in good agreement with the label claim. No interference was observed from the commonly encountered additives and expectancies.

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Spectrophotometric and Colorimetric Determination of Pharmaceutical by Oxidative Coupling Reaction: A Review

Systematic Reviews in Pharmacy ◽

10.31838/srp.2020.4.91 ◽

2020 ◽

Vol 11 (04) ◽

Keyword(s):

Oxidative Coupling ◽

Coupling Reaction ◽

Colorimetric Determination ◽

Oxidative Coupling Reaction

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Contribution to the Optimization of a Gas Chromatographic Method by QbD Approach used for Analysis of Essential Oils from Salvia officinalis

Revista de Chimie ◽

10.37358/rc.19.6.7266 ◽

2019 ◽

Vol 70 (6) ◽

pp. 2015-2020

Author(s):

Silvia Robu ◽

Aurelia Romila ◽

Olimpia Dumitriu Buzia ◽

Adrian Florin Spac ◽

Camelia Diaconu ◽

...

Keyword(s):

Essential Oil ◽

Essential Oils ◽

Plant Material ◽

Mobile Phase ◽

Chromatographic Method ◽

Salvia Officinalis ◽

Salvia Officinalis L ◽

Gas Chromatographic Method

Numerous articles on Salvia officinalis L. have been published regarding the composition of their essential oil. The considerable variation found may be due to the quality of the plant material as well as to the methods used for analysis. A simple GC-MS method was developed and optimized in the QbD approach, for the determination of sage essential oils. The optimization of GC-MS analysis was performed using different mobile phase flows, injection volumes, split ratios and temperature programs. The optimized method proved to be simple and can be successfully applied for the determination of sage essential oils.

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