Electrokinetic control of fluid in plastified laser-printed poly(ethylene terephthalate)-toner microchips

被引：38

作者：

He, FY

Liu, AL

Yuan, JH

Coltro, WKT

Carrilho, E

Xia, XH ^{[1
]}

机构：

[1] Nanjing Univ, Dept Chem, Key Lab Analyt Chem Life Sci, Nanjing 210093, Peoples R China

[2] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2005年 / 382卷 / 01期

基金：

中国国家自然科学基金;

关键词：

electrochemical detection; electrokinetic control; electrophoresis; PET; microchip;

D O I：

10.1007/s00216-005-3200-x

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

The application of plastified laser-printed poly(ethylene terephthalate)(PET)-toner microchips to capillary electrophoresis was investigated. Electroos-motic flow was observed in the direction of the cathode for the buffer system studied (phosphate, pH 3-10). Average electroosmotic mobilities of 1.71 x 10(-4) to 4.35 x 10(-4) cm(2) V-1 s(-1) were observed from pH 3 to 10. This variation suggests that silica fillers in the toner and on the surface of the polymer dominate the zeta potential of the material, which is also confirmed by XPS measurements. Dopamine and catechol were used as model analytes for microchip electrophoresis in combination with electrochemical detection. Results show that these two analytes can be efficiently separated and detected electrochemically with the plastified laser-printed PET-toner microchips.

引用

页码：192 / 197

页数：6

共 30 条

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