COMPARISON OF PERFORMANCES AND ANALYTICAL APPLICATIONS OF 2 IMMOBILIZED OXALATE OXIDASE SENSORS

被引:17
作者
AMINI, MAS
VALLON, JJ
机构
[1] HOP EDOUARD HERRIOT,BIOCHIM TOXICOL & ANAL TRACES LAB,LYON,FRANCE
[2] FAC PHARM LYON,CHIM ANALYT LAB 3,LYON,FRANCE
关键词
AMPEROMETRY; ENZYMATIC METHODS; ENZYME ELECTRODE; MEMBRANES; OXALATE OXIDASE;
D O I
10.1016/0003-2670(94)00322-X
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The enzyme oxalate oxidase was immobilized on a pre-activated Nylon membrane or on a collagen membrane after activation of the carboxyl groups with the aid of an acyl-azide reaction. Oxalate was quantitated amperometrically via electrooxidation of the hydrogen peroxide generated in the reaction between oxalic acid and oxygen. The specific activities for the collagen and Nylon membranes were 0.13 and 0.74 U/cm(2), respectively. The enzyme activities for the two membranes were determined as a function of pH and ionic strength. The detection limits of oxalate were 1 X 10(-5) M for the collagen sensor and 4 X 10(-7) M for the Nylon sensor.
引用
收藏
页码:75 / 79
页数:5
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