title: Electrochemical determination of oxytetracycline in veterinary drugs.
abstract: Conductometric, potentiometric and cyclic voltammetric (CV) titration methods are proposed for determination of oxytetracycline (OTC), commonly used in veterinary. The electrochemical titration of OTC hydrochloride with NH(4)Mo(7)O(24), NaVO(3), NaOH, AgNO(3) and FeCl(3) as titrants are reported. The proposed methods were found to be highly precise, having a relative standard deviation (R.S.D.) below 1.0%. Proposed electrochemical titrations were successfully applied to the assay of commercial preparations: Tetrox, Tetramutin OT and Neox, containing the above-mentioned antibiotics. The validity of the methods was tested by the recovery studies of standard addition to pharmaceuticals and results were found to be satisfactory.
authors.affiliation: Faculty of Chemistry, Nicolaus Copernicus University, 87-100, Toruń, ul. Gagarina 7, Poland. jmk@cc.uni.torun.pl
authors.forename: Marzanna
authors.initials: M
authors.lastname: Kurzawa
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Kowalczyk-Marzec
mesh_terms: D004563:Electrochemistry / Q000379:methods; D010118:Oxytetracycline / Q000032:analysis* / Q000737:chemistry*; D019155:Veterinary Drugs / Q000032:analysis* / Q000737:chemistry*
chemical_list: D019155:Veterinary Drugs; D010118:Oxytetracycline