title: Flow injection chemiluminescence analysis of some penicillins by their sensitizing effect on the potassium permanganate-glyoxal reaction.
abstract: A new chemiluminescence method using flow injection is described for the determination of four penicillins, namely: phenoxymethylpenicillin potassium, amoxicillin, ampicillin, and ampicillin sodium. The method is based on sensitizing effect of these drugs on the chemiluminescence reaction of potassium permanganate in sulfuric acid with glyoxal. The different experimental parameters affecting the chemiluminescence intensity were carefully studied and incorporated into the procedure. The method allows the determination of 0.1-1.0 microg/ml phenoxymethylpenicillin potassium, 0.1-1.0 microg/ml amoxicillin, 0.1-1.0 microg/ml ampicillin, and 0.1-1.0 microg/ml ampicillin sodium. The method was successfully applied to the determination of four penicillin antibiotics in pharmaceutical preparations.
authors.affiliation: Department of Chemistry, College of Science, Xi'an Jiaotong University, Xi'an 710061, PR China.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Sun
authors.forename: Yuhai
authors.initials: Y
authors.lastname: Tang
authors.forename: Hong
authors.initials: H
authors.lastname: Yao
authors.forename: Yinhuan
authors.initials: Y
authors.lastname: Li
mesh_terms: D002138:Calibration; D002214:Capsules; D017022:Flow Injection Analysis; D006037:Glyoxal / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D008163:Luminescent Measurements; D010406:Penicillins / Q000032:analysis*; D011196:Potassium Permanganate / Q000737:chemistry*; D015203:Reproducibility of Results; D013607:Tablets
chemical_list: D002214:Capsules; D007202:Indicators and Reagents; D010406:Penicillins; D013607:Tablets; D011196:Potassium Permanganate; D006037:Glyoxal