Spectrophotometric determination of bunte salts.

Spectrophotometric Determination of Copper

The utility of Patton and Reeder’s indicator, HHSNNA, for the trace spectrophotometric and visual colorimetric determination of Cu 2+ is explored. A wine red complex of composition 1:1 is found to be formed between Cu 2+ and HHSNNA. The complex has λmax at 530 nm with ε = 25,558 L mole -1 cm -1 and is stable for more than 2 hrs. Beer’s law is obeyed between 0 to 1.5 ppm. The developed procedure...

Spectrophotometric determination of chlorodiazepoxide

Simple, rapid and sensitive spectrophotometric methods were developed for the determination of chlorodiazepoxide drugs in pharmaceutical dosage forms. This method is based on ion pair and charge transfer complexation reactions. The method is based on the reaction of the chlorodiazepoxide drug with Mo(V)–thiocyanate in hydrochloric acid medium followed by an extraction of the coloured ion-pair w...

Selective extraction spectrophotometric determination

Spectrophotometric Determination of Some Fluoroquinolones

Two simple, rapid and sensitive spectrophotometric methods for the determination of three fluoroquinolones, namely levofloxacin, norfloxacin and ciprofloxacin have been performed either in pure form or in their tablets. In the first method, levofloxacin and norfloxacin are directly treated with bromocresol green (BCG) in dichloromethane while ciprofloxacin is allowed to react with the same dye ...

Spectrophotometric determination of drugs using

Seven drugs viz., Paroxetine, Famotidine, Quetiapine, Dextromethorphan, Levofloaxacin, Irbesartan and Itraconazole were tested for the formation of charge transfer complexes with DDQ and the interaction formed a basis for spectrophotometric determination of the drugs. Acetonitrile was found to be suitable solvent for the analysis. The methods have been validated in terms of ICH guidelines The c...