A Novel Spectrophotometric Method for Determination of Histamine Based on Its Complex Reaction with Ni(II) and Alizarin Red S

Spectrophotometric determination of ceterizine hydrochloride with Alizarin Red S.

A simple, rapid and sensitive spectrophotometric method has been developed for the assay of ceterizine hydrochloride (CTZH) in bulk drug and its pharmaceutical preparations. This method is based on the ion-pair complex reaction between CTZH and Alizarin Red S in Clarks-Lubs buffer. The chromogen being extractable with chloroform, could be measured quantitatively at 440 nm. All variables were st...

development of a dye-complex based spectrophotometric method for determination of azithromycin in bulk and dosage forms using alizarin red

SPECTROPHOTOMETRIC REACTION RATE METHOD FOR THE DETERMINATION OF NITRITE BY CATALYTIC ACTION ON NILE BLUE A BROMATE REACTION

A kinetic method developed for the determination of ultra-trace amounts of nitrite based on its catalytic effect on the reaction between potassium bromate and Nile blue A in strongly acidic media is reported. The reaction was monitored spectrophotometrically by measuring the decrease in absorbance of Nile blue A at 645 nm by the fixed-time method. The decrease in absorbance during the first...

Spectrophotometric Determination of Ambroxol Hydrochloride and Its Formulations Based on Charge Transfer Complex Reaction

A rapid, sensitive and accurate spectrophotometric method for the determination of ambroxol was described in this study. The current method was developed based on charge transfer complexation of ambroxolol (AMB) with the chloranilic acid (CAA). The formed intensed Colored complex was measured at 430 nm and used for determination of AMB and its formulations.Under optimized experimental condition...

Kinetic-Spectrophotometric Determination of Track Amounts of Nitrite Ion Based on Its Reduction Reaction with Thionine in Acidic Media

A simple, sensitive and rapid method for determination of trace amounts of nitrite ion in real samples is reported. The reaction is initiated by adding known volumes of a nitrite ion solution of identified concentration to acidic solutions of thionine which causes decolorizaiton of reagent with time. The absorbance changes is then monitored spectrophotometrically at l...