METHOD FOR MEASURING CONCENTRATION OF SUBSTANCE TO BE EXAMINED, AND INSTRUMENT FOR MEASURING CONCENTRATION OF SUBSTANCE TO BE EXAMINED USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a method for measuring the concentration of a substance to be examined which enables the detection of a large number of the substances to be examined in a sample to be examined with high precision at the same time, and an inexpensive small-sized instrument for measuring the concentration of the substance to be examined using the same.;SOLUTION: The substances to be examined are supplied to a cell 105 having gold nanorods 105a-105f, to which different antibodies are fixed and which are different in aspect ratio, formed thereto, the cell 105 is irradiated with light containing a plurality of wavelengths, the light transmitted through, scattered from or reflected from the cell 105 is spectrally diffracted, the spectrally diffracted light is detected and the shift quantities of the localization type surface plasmon resonance wavelengths of the gold nanorods of the respective aspect ratios produced in the cell 105 are calculated. The concentrations of the respective substances to be examined are simultaneously calculated with high precision on the basis of the obtained shift quantities of the localization type surface plasmon resonance wavelengths.;COPYRIGHT: (C)2010,JPO&INPIT