TITLE:
Use of Cucurbit [6] Uril as a Modifier in the Electrochemical Determination of Antitumor Platinum (II) Complex: Trans-[PtCl2(Dimethylamine) (Isopropylamine)]. Application to Biological Samples
AUTHORS:
Carmen S. H. Domínguez, Pedro Hernández
KEYWORDS:
Trans-[PtCl2(Dimethylamine)(Isopropylamine)]; Differential Pulse Voltammetry (DPV); Square Wave Voltammetry (SWV); Biological Fluids; Human Urine
JOURNAL NAME:
American Journal of Analytical Chemistry,
Vol.4 No.6,
June
20,
2013
ABSTRACT:
A
square wave voltammetry (DPV) method for trans-Pt[Cl2(Dimethylamine)(isopropylamine)]
determination is developed. To this end, all the chemical and instrumental variables affecting the
determination of trans-Pt[Cl2(Dimethylamine) (isopropylamine)] are optimized.
From studies of the mechanisms governing the electrochemical response of trans-Pt[Cl2(Dimethylamine)(isopropylamine)],
it was concluded that it was an electrochemically reversible system with an adsorptive oxidation phenomenon. Under optimal
conditions, the variation of analytical signal (Ip) with trans-Pt[Cl2(Dimethylamine)(isopropylamine)] concentration was
linear in the 0.05 μg·mL-1 to 10 μg·mL-1 range, with a LOD 91 μg·mL-1 of and a LOQ of 303 μg·mL-1, a RSD 1.10% and Er 0.72%. The optimized
method was applied to the determination of trans-Pt[Cl2(Dimethylamine)(isopropylamine)]
in biological fluids, in human urine and synthetic urine.