Novel solid-state ammonium ion potentiometric sensor based on zirconium titanium phosphate ion exchanger

被引：44

作者：

Hassan, SSM ^{[1
]}

Marei, SA

Badr, IH

Arida, HA

机构：

[1] Ain Shams Univ, Fac Sci, Dept Chem, Cairo, Egypt

[2] Egyptian Atom Energy Author, Hot Lab Ctr, Inshas, Egypt

来源：

ANALYTICA CHIMICA ACTA | 2001年 / 427卷 / 01期

关键词：

ammonium; ammonia; solid state membrane sensor; flow injection analysis; gas dialysis; potentiometric determination; zirconium titanium phosphate; inorganic ion exchangers;

D O I：

10.1016/S0003-2670(00)01189-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Preparation, characterization and applications of a novel long life ammonium ion membrane sensor based on zirconium titanium phosphate (ZTP) ion exchanger are described. The sensor displays a useful analytical response with excellent reproducibility, good precision, low detection limit and applicability over a wide range of ammonium ion concentration (1.2 x 10(-5)-1.0 M). It also offers the advantages of significantly high thermal stability and resistivity towards redox agents and strong mineral acids. Using a gas diffusion dialyzer/flow-injection system, under optimized conditions, the ZTP membrane based sensor provides a throughput of 30 samples per hour with excellent selectivity for ammonium ion over most common cations. The average recovery of 7-140 mug ml(-1) NH3-N is 101.3 +/- 1.6% and the overall system has the advantages of simple construction, low cost, fast response time, reliability and automation feasibility. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：21 / 28

页数：8

共 20 条

[1] INORGANIC ION EXCHANGERS- .8. PURIFICATION OF WATER AT ELEVATED TEMPERATURES BY A COMBINATION OF ZIRCONIUM PHOSPHATE AND ZIRCONIUM HYDROXIDE GELS [J].