Investigating the physicochemical properties of phenazopyridine hydrochloride using high-performance liquid chromatography and UV-Visible spectrophotometry

A comparative study for the quantitative determination of paracetamol in tablets using UV - Visible spectrophotometry and high performance liquid chromatography

Sayed et al / Physical Chemistry 17(1) (2015) 1-5 2 materials and tablets. The results obtained by these methods were also compared statistically.

Determination of butamyrate citrate in cough preparations by derivative UV spectrophotometry and high performance liquid chromatography.

Derivative spectrophotometric procedures and an isocratic high performance liquid chromatographic method for the determination of butamyrate citrate (Sinecod, Safarol) in cough syrups have been developed. In the spectrophotometric method, direct measurement of the drug at its absorption maxima is impossible because of interference from different absorbing excipients. Extraction of butamyrate ci...

Basic UV/Visible Spectrophotometry

Determination of Astaxanthin in Trout by High Performance Liquid Chromatography Coupled with Visible Detection

Background: Astaxanthin is widely and naturally distributed in marine animals including, crustaceans, such as shrimp, crabs, and fish, such as salmon and trout. Methods: A total of 20 trout samples were collected from local market and were analyzed for astaxanthin via HPLC-UV. Analyte extraction was done by water, methanol, dichloromethane, and acetonitrile 4.5:85:5:45.5, v/v/v/v. Results: Desp...

spectrophotometry, high-performance liquid chromatography (HPLC) and liquid chromatography–mass spectrometry

Photonic crystal (PC) microcavities formed by 2D air holes on silicon-on-insulator substrates were utilized as biosensors to detect antibiotics with high specificity. The antibiotic, gentamicin, with molecular weight of only 478 g/mol, was successfully detected via its binding to corresponding antibody pre-immobilized on the sensor surface. Detection range (in concentration) was extended by com...