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Proceedings Paper

Portable UV absorbance detection system for microchip electrophoresis
Author(s): Li Tian; Wei J. Wang; Xiaowei Liu; Yu Song; Shaoyong Lu
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Paper Abstract

This paper presents a new structure of MCE chip on PMMA substrate prepared to improve the original chip structure with UV absorbance detection mode. The chip microchannels are fabricated by CNC milling and packaged with hot embossing process at the processing condition of 80°C, 5min, 0MPa with a manual powder pressing machine. All the micro-channels is 150&mgr;m * 150&mgr;m. Mobility &mgr;eo of PMMA MCE chip is 2 9.15e-004cm Vs in the solution of 10mmol/L Na2CrO4 and 0.5mmol/L CTAB. Adopting indirect UV photometric detection mode, the inorganic anion Cl- capillary electrophoresis is carried out with an in-house UV detection system. The BGE buffer is 10 mmol/L Na2CrO4 and 0.5mmol/L CTAB, and the electrophoresis voltage is 616V. Test widow is 0.3*2 mm2. Test results indicate that both in-house UV detection system and MCE chip of PMMA substrate have the basic function and could be applied in the chemical analysis field.

Paper Details

Date Published: 12 January 2009
PDF: 6 pages
Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 71334G (12 January 2009); doi: 10.1117/12.807890
Show Author Affiliations
Li Tian, Harbin Institute of Technology (China)
Wei J. Wang, Harbin Institute of Technology (China)
Xiaowei Liu, Harbin Institute of Technology (China)
Yu Song, Harbin Institute of Technology (China)
Shaoyong Lu, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 7133:
Fifth International Symposium on Instrumentation Science and Technology
Jiubin Tan; Xianfang Wen, Editor(s)

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