PAPAVERINE-SELECTIVE PLASTIC MEMBRANE-ELECTRODE BASED ON PAPAVERINIUM TETRAPHENYLBORATE

被引:7
作者
SHOUKRY, AF [1 ]
ISSA, YM [1 ]
IBRAHIM, H [1 ]
ELRASHIEDY, OA [1 ]
机构
[1] UNIV CAIRO,FAC SCI,DEPT CHEM,GIZA,EGYPT
关键词
PAPAVERINE-SELECTIVE MEMBRANE ELECTRODE; TETRAPHENYLBORATE; ISOTHERMAL TEMPERATURE COEFFICIENT;
D O I
10.1080/00032719108053018
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A plasticized PVC membrane containing the lipophilic salt papaverinium-tetraphenylborate was used to construct an ion-selective electrode for papaverine hydrochloride (Pv+Cl-). The electrode shows near Nernstian response over the concentration range 1.6 x 10(-5) - 1.30 x 10(-2) M PvCl in solutions of pH 1.0-6.2 at 25-degrees-C. The standard electrode potentials were determined at different temperatures and used to calculate the isothermal coefficient of the electrode. The electrode showed very good selectivity for Pv with respect to a large number of inorganic and organic cations. The potentiometric titration and standard addition methods were used to determine Pv in pure solutions and in pharmaceutical preparations.
引用
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页码:1861 / 1873
页数:13
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