PHOSPHATE-SELECTIVE POLYMER MEMBRANE-ELECTRODE

被引：75

作者：

GLAZIER, SA ^{[1
]}

ARNOLD, MA ^{[1
]}

机构：

[1] UNIV IOWA,DEPT CHEM,IOWA CITY,IA 52242

来源：

ANALYTICAL CHEMISTRY | 1988年 / 60卷 / 22期

关键词：

Membranes - Materials - Phosphates - Polyvinyl Chloride;

D O I：

10.1021/ac00173a024

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The authors have found that the incorporation of dibenzyltin dichloride derivatives into a plasticized poly(vinyl chloride) (PVC) membrane gives a selective response to phosphate. The electrode exhibits selectivity for orthophosphate over many common anions, such as acetate, sulfate, chloride, bromide, nitrate, and iodide. A detection limit of 3.3 × 10-5M and a linear range of response from 2.2 × 10-4 to 1.2 × 10-2M for dibasic orthophosphate activity are obtained when operated in a pH 7.00 buffer. Slopes of -33.0 ± 0.1 mV/decade are obtained. In addition, the electrode lifetime is at least 28 days.

引用

页码：2540 / 2542

页数：3