IMPRINTING ZEOLITE-MODIFIED GLASSY CARBON AS A VOLTAMMETRIC SENSOR FOR URIC ACID

被引：7

作者：

Khasanah, Miratul ^{[1
]}

Harsini, Muji ^{[1
]}

Widati, Alfa Akustia ^{[1
]}

机构：

[1] Airlangga Univ, Fac Sci & Technol, Dept Chem, Kampus C Unair, Surabaya 60115, Indonesia

来源：

INDONESIAN JOURNAL OF CHEMISTRY | 2013年 / 13卷 / 02期

关键词：

sensor; uric acid; voltammetry; imprinting zeolite; glassy carbon;

D O I：

10.22146/ijc.21292

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Development of the uric acid sensor through coating of glassy carbon ( GC) electrode with imprinting zeolite (IZ) was carried out. Zeolite was synthesized by mixing TEOS, TBOT, TPAOH, and water followed by hydrothermal process. Zeolite was molded together with uric acid to produce IZ. The deposition potential of IZ and uric acid to the GC surface was -0.6 V during 150 sec with addition of KNO3 0.02 M as supporting electrolyte. The method gives linearity of 0.9834 (concentration 5.6x10(-9)M - 2.8x10(-8) M), precision 1.89 - 7.65%, sensitivity 0.33 mu A/nM/cm(2), limit of detection 5.9x10(-9) M, and accuracy 96.26 +/- 0.55% (n = 5). The developed sensor showed a high selectivity toward uric acid. The presence of ascorbic acid, creatine, and creatinine with an equal concentration with uric acid did not interfere on the uric acid analysis.

引用

页码：108 / 113

页数：6

共 23 条

[1] Simultaneous determination of tryptophan, uric acid and ascorbic acid at iron(III) doped zeolite modified carbon paste electrode [J].