Determination of sulfite by flow injection analysis using a poly [Ni-(protoporphyrin IX)] chemically modified electrode

被引：54

作者：

Carballo, R ^{[1
]}

Dall'Orto, VC ^{[1
]}

Lo Balbo, A ^{[1
]}

Rezzano, I ^{[1
]}

机构：

[1] Univ Buenos Aires, Fac Farm & Bioquim, RA-1113 Buenos Aires, DF, Argentina

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2003年 / 88卷 / 02期

关键词：

poly[Ni-(protoporphyrin IX)] film; sulfite; flow injection; amperometric detection;

D O I：

10.1016/S0925-4005(02)00319-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new method for quantification of both free and total SO2 is described. Poly[Ni-(protoporphyrin IX)] (NiPPIX) film at submonolayer-level-modified glassy carbon electrodes showed an important catalytic effect for the oxidation of SO2. This modified electrode is an useful tool in chemical analysis when it is incorporated to an amperometric detector in a flow or in a stirred system. The method gives a linear range up to 9.0 mug ml(-1) and a detection limit of 0.15 mug ml(-1) for SO2. The described method is simple and non-expensive. Surface coating is highly stable under hydrodynamic conditions in the flow cell. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：155 / 161

页数：7

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