Other

Kenji Kamada

Keiji Sasaki

Hiroshi Masuhara

Noboru Kitamura

A method of spectrometry is disclosed for measuring transient absorbance and transient absorption spectrum of a substance to be measured at interfaces in liquid phase of particulates containing a fluorescent pigment and the substance to be measured by the utilization of optical resonance phenomenon. An apparatus for carrying out the method is also disclosed and comprises: (a) a pulse laser oscillator for exciting the fluorescent pigment and the substance to be measured, respectively; (b) an optical delay device for causing delay of any one of pulse laser beams of two kinds of wavelengths generated by the pulse laser oscillator; (c) a microscope system for condensing laser beams generated by the pulse laser oscillator and irradiating the condensed beams to the sample; and (d) a detector for detecting light emission of the sample. According to the method of the present invention, it is possible to measure transient absorbance and transient absorption spectrum at a high sensitivity even when particulates containing the substance to be measured in liquid phase are present.

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Kyoto, Japan

Kenji Kamada