Polymeric membrane phosphate sensitive electrode based on binuclear organotin compound

被引：80

作者：

Liu, D ^{[1
]}

Chen, WC ^{[1
]}

Yang, RH ^{[1
]}

Shen, GL ^{[1
]}

Yu, RQ ^{[1
]}

机构：

[1] HUNAN UNIV,DEPT CHEM & CHEM ENGN,CHANGSHA 410082,PEOPLES R CHINA

来源：

ANALYTICA CHIMICA ACTA | 1997年 / 338卷 / 03期

关键词：

binuclear organotin compound; hydrogen phosphate; ion sensitive electrode;

D O I：

10.1016/S0003-2670(96)00382-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Binuclear organotin compounds incorporated in solvent polymeric membranes can act as carriers for phosphate ions. A poly(vinyl chloride) membrane containing bis(tribenzyltin) oxide, o-nitrophenyl octyl ether as plasticizer showed Nernstian response for hydrogen phosphate in the 5x10(-6)-10(-1) mol l(-1) activity range with a slope of -30.1 mV dec(-1) in solutions of pH 7.20+/-0.02. The electrode displayed the following selectivity sequence: HPO42->I->Br->NO3->Cl->Ac->SO42-, which was not in accordance with the Hofmeister series. Also included is the comparison of potentiometric response characteristics between the binuclear and mononuclear organotin compounds. An enhanced response towards HPO42- for the binuclear compound based electrode was observed, showing that binuclear organometallic compounds may become a promising class of carriers for anions.

引用

页码：209 / 214

页数：6

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