title: Ion chromatographic method development for monitoring of seawater quality used in over-the-counter pharmaceutical industry.
abstract: A methodology is developed for the analysis of inorganic anions (fluoride, chloride, bromide, sulphate) in seawater used for over-the-counter (OTC) nasal spray production. The eluent flow rate and concentration of eluent competing ions are optimised by using an artificial neural network resolution model in combination with normalised resolution product criterion function. The developed artificial neural network resolution model shows good predictive ability R2 > or = 0.9973. The determined ion chromatographic parameters enable baseline separation of all components of interest. By performing a validation procedure and a number of statistical tests, it is shown that the developed ion chromatographic method has superior performance characteristics: linearity R2 > or = 0.9993, recovery = 99.77-100.65%, repeatability RSD < or = 1.85%. This result proves that the proposed method can be used for routine quality assurance analysis in OTC pharmaceutical industry.
authors.affiliation: Department for Analytical Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia. Tomislav.Bolanca@fkit.hr
authors.forename: Tomislav
authors.initials: T
authors.lastname: Bolancca
authors.forename: Stefica
authors.initials: S
authors.lastname: Cerjan-Stefanović
authors.forename: Melita
authors.initials: M
authors.lastname: Regelja
authors.forename: Danijela
authors.initials: D
authors.lastname: Stanfel
mesh_terms: D002852:Chromatography, Ion Exchange / Q000379:methods; D004345:Drug Industry / Q000592:standards*; D004784:Environmental Monitoring / Q000379:methods*; D009415:Nerve Net; D004364:Pharmaceutical Preparations / Q000592:standards*; D015203:Reproducibility of Results; D012623:Seawater / Q000032:analysis*
chemical_list: D004364:Pharmaceutical Preparations