Patent ID: 8536873
Filing Date: 2013-09-17
Classification: G01N

Abstract:
1. A detection method of detecting a target substance, the method comprising: exciting the target substance by irradiating an atmosphere of a detection space with light having a first wavelength that excites the target substance from a ground state to an excited state on the basis of the energy level structure of the target substance; ionizing the target substance by irradiating the atmosphere of the detection space with light having a second wavelength that excites the target substance from the excited state to an energy state substantially equal to or higher than a vacuum level; making the ionized target substance adsorb to a detector by electric field acceleration; and detecting the amount of adsorption of the target substance, wherein the light having the first wavelength and the light having the second wavelength are each pulsed light, and the irradiation of the pulsed light having the second wavelength is delayed from the irradiation of the pulsed light having the first wavelength.