Array of potentiometric sensors for multicomponent analysis of blood serum

被引：7
|
作者：
Correia, Daniela P. A. [1 ]
Magalhaes, Julia M. C. S. [1 ]
Machado, Adelio A. S. C. [1 ]
机构：
[1] Univ Porto, Fac Ciencias, Dept Chem, LAQUIPAI, P-4169007 Oporto, Portugal
来源：
MICROCHIMICA ACTA | 2008年 / 163卷 / 1-2期
关键词：
urea; potassium; carboxylated PVC; multicomponent analysis;
D O I：
10.1007/s00604-007-0920-y
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Two urea biosensors, based on carboxylated polyvinylchloride ammonium ion selective electrodes with urease immobilized with carbodiimide, were included in an array together with potassium and sodium ion selective electrodes and evaluated for simultaneous determination of urea and potassium in blood serum. The results show that it is possible to obtain principal component regression and partial least squares (PLS2) calibration models for simultaneous determination of urea (in the range 0.10-5 mM) and potassium (in the range 0.20-0.60 mM) based on a set of 9 calibration samples. The prediction errors of the concentration of urea and potassium in blood serum samples using this array and a PLS2 calibration model are lower than 13 and 5%, respectively.
引用
收藏
页码：131 / 137
页数：7
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