| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the collection efficiency for attracting various measurement object materials, increase a concentration of the measurement object material in a detection section and improve the measurement sensitivity. <P>SOLUTION: Electrodes 8-1-8-4 are disposed on a bottom face 6 of a sample cell 2 so as to sequentially narrow a space from an upstream to a downstream of a flow of a sample solution. A metal thin film 10 is disposed downstream of the electrode 8-4. When excitation light enters from outside of the bottom face 6 into the metal thin film 10 through a prism 12 on the condition of total reflection, a surface plasmon resonance is generated, and a change of a refraction index is measured from a surface plasmon resonance angle. When an AC voltage is applied to the electrodes 8-1-8-4, the measurement object material 18 is aggregated on the metal thin film 10 by an electrophoresis, and the measurement object material 18 is condensed and sensitively measured. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
