Patent ID: 7364917

Claim:
A method for detecting a component of a substance on a front surface of a substrate, comprising the steps of: transferring the substrate with the substance thereon into a vaporizing section, heating the substance in the vaporizing section so that the component is vaporized from the substance in the vaporizing section, feeding the component vaporized from the substance in the vaporizing section to a detecting section, and detecting the vaporized component in the detecting section, wherein in the step of feeding the component vaporized in the vaporizing section, a gaseous matter other than the vaporized component is supplied toward the substance in the vaporizing section to be fed with the vaporized component toward the detecting section, and wherein the gaseous matter is supplied from a radially outer side with respect to the substance toward the substance in a radially inward direction of the substance as seen in a stacking direction in which the substance and the substrate are stacked.