Sensitive voltammetric determination of rutin at an in situ plated lead film electrode.
A highly sensitive sensor for the determination of rutin by adsorptive stripping voltammetry was described. It consists of a lead film modified glassy carbon electrode (LF/GCE). In the proposed procedure rutin was accumulated by adsorption on the lead film electrode and then during the stripping step a lead film and the accumulated rutin were oxidised. The electrochemical behaviour of rutin at the lead film electrode was investigated by square-wave voltammetry. In the optimal conditions the anodic peak currents (measured by square-wave voltammetry) increased linearly with the concentration of rutin in the range of 5 x 10(-10) to 1 x 10(-8)mol L(-1). The detection limit for rutin following 30s of accumulation time was equal to 2.5 x 10(-10) mol L(-1). The method was successfully applied to the determination of rutin content in the tablets without previous separation.
Tyszczuk
Katarzyna
K
Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland. ktyszczuk@poczta.umcs.lublin.pl
D000327:Adsorption; D002021:Buffers; D002244:Carbon / Q000737:chemistry; D004563:Electrochemistry / Q000379:methods; D004566:Electrodes; D004573:Electrolytes / Q000737:chemistry; D006027:Glycosides / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007854:Lead / Q000737:chemistry*; D015394:Molecular Structure; D008970:Molecular Weight; D010084:Oxidation-Reduction; D015203:Reproducibility of Results; D012431:Rutin / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013607:Tablets
D002021:Buffers; D004573:Electrolytes; D006027:Glycosides; D013607:Tablets; D007854:Lead; D012431:Rutin; D002244:Carbon