Imprinted Zeolite Modified Carbon Paste Electrode as a Potentiometric Sensor for Uric Acid

被引：2
|
作者：
Khasanah, Miratul [1 ]
Widati, Alfa Akustia [1 ]
Fitri, Sarita Aulia [1 ]
机构：
[1] Airlangga Univ, Fac Sci & Technol, Dept Chem, Surabaya 60115, Indonesia
来源：
5TH INTERNATIONAL CONFERENCE AND WORKSHOP ON BASIC AND APPLIED SCIENCES (ICOWOBAS 2015) | 2016年 / 1718卷
关键词：
carbon paste; imprinted zeolite; modified electrode; potentiometry; uric acid; GLASSY-CARBON; VOLTAMMETRIC SENSOR; ASCORBIC-ACID;
D O I：
10.1063/1.4943333
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Imprinted zeolite modified carbon paste electrode (carbon paste-IZ) has been developed and applied to determine uric acid by potentiometry. The imprinted zeolite (IZ) was synthesized by the mole ratio of uric acid/Si of 0.0306. The modified electrode was manufactured by mass ratio of carbon, IZ and solid paraffin was 40: 25: 35. The modified electrode had shown the measurement range of 10(-5) M to 10(-2) M with Nernst factor of 28.6 mV/decade, the detection limit of 5.86 x 10(-6) M and the accuracy of 95.3 - 105.0%. Response time of the electrode for uric acid 10(-5) M - 10(-2) M was 25 - 44 s. The developed electrode showed the high selectivity toward uric acid in the urea matrix. Life time of the carbon paste-IZ electrode was 10 weeks.
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页数：6
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