| 摘要 |
A carbon dioxide gas is supplied to a living plant while it is illuminated with excitation light, and resulting fluorescence from the plant is detected. Then, a mixture of a carbon dioxide gas and a gas or fine particles to be monitored is supplied to the same living plant while it is illuminated with the excitation light, and resulting fluorescence from the plant is detected. Differences between temporal variations or wavelength characteristics of fluorescence intensities under the above two conditions are used to identify the gas or fine particles.
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