Abstract
A polymer microchannel chip with a symmetrical or unsymmetrical zigzag-side-walled structure was fabricated by an imprinting method, and applied to study shape effects on solution flow characteristics as well as on the liquid/liquid extraction efficiency of an aluminium(III) chelate complex (Al-DHAB: DHAB = o,o’-dihydroxyazobenzene) in a microchannel chip. In an unsymmetrical zigzag-side-walled channel chip (us-channel), an oil/water interface was sinusoidal, while that in a symmetrical zigzag-side-walled channel chip (s-channel) was flat as long as the observation was made under an optical microscope. It was demonstrated that the efficiency of the water-to-oil (1-butanol) extraction of Al-DHAB in the microchannel was governed by the contact time between the two phases. As the most important results, furthermore, the extraction efficiency was higher in the us-channel, as compared with that in the s-channel, owing to the sinusoidal liquid/liquid interfacial structure and, therefore, to the high interfacial area between the two phases.
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L. Martynova, L. E. Locascio, M. Gaitan, G. W. Kramer, and R. G. Christensen, Anal. Chem., 1997, 69, 4783.
H.-B. Kim, K. Ueno, M. Chiba, O. Kogi, and N. Kitamura, Anal.Sci., 2000, 16, 871.
F. Kitagawa, K. Ueno, and N. Kitamura, “Micro Total Analysis Systems 2002”, ed. Y. Baba, S. Shoji, and A. Van Den Berg, 2002, Kluwer Academic Press, Dordrecht, 876.
K. Ueno, F. Kitagawa, and N. Kitamura, Lab. Chip, 2002, 2, 231.
K. Ueno, F. Kitagawa, H.-B. Kim, T. Tokunaga, S. Matsuo, H. Misawa, and N. Kitamura, Chem. Lett., 2000, 8, 858.
Y. Hosoda, K. Ueno, S. Ishizaka, and N. Kitamura, “Micro Total Analysis Systems2002”, ed. Y. Baba, S. Shoji, and A. Van Den Berg, 2002, Kluwer Academic Press, Dordrecht, 882.
P. J. A. Kenis, R. F. Ismagilov, and G. M. Whitesides, Science, 1999, 285, 83.
V. Mengeaud, J. Josserand, and H. H. Girault, Anal. Chem., 2002, 74, 4279.
J. H. Ferziger and M. Peric, “Computational Methods for Fluid Dynamics”, 1996, Springer-Verlag, New York.
O. Kogi, H.-B. Kim, and N. Kitamura, Anal. Chim. Acta, 2000, 418, 129.
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Ueno, K., Kim, HB. & Kitamura, N. Channel Shape Effects on the Solution-Flow Characteristics and the Liquid/Liquid Extraction Efficiency in Polymer Microchannel Chips. ANAL. SCI. 19, 391–394 (2003). https://doi.org/10.2116/analsci.19.391
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DOI: https://doi.org/10.2116/analsci.19.391