title: Principal component analysis and cluster analysis for the characterisation of marbles by capillary electrophoresis.
abstract: Chemical characterisation has been carried out on 25 quarry marbles collected from Marmara, Aegean and Thrace regions of Turkey. Ten elements were determined by capillary electrophoresis (CE). Principal component analysis and cluster analysis techniques were utilised to define grouping of different marble samples. These techniques showed that the analysed marbles were differentiable mainly by provenance. Experimental conditions such as pH, applied voltage and concentration of alpha-hydroxyisobutyric acid (HIBA) were optimised to achieve the best separation of metal ions using central composite design. The optimum pH 3.7, applied voltage 15kV and concentration of HIBA 10mM were found to provide the best separation for all metal ions investigated.
authors.affiliation: Department of Chemistry, Faculty of Science and Arts, University of Uludag, 16059 Bursa, Turkey.
authors.forename: Yasin
authors.initials: Y
authors.lastname: Yücel
authors.forename: Cevdet
authors.initials: C
authors.lastname: Demir