Provided is a gas-blowing vaporizing and drying device, which includes: a sample tube in the form of a double tube including an inner tube for a solution and an outer tube for a gas, the inner tube protruding from one end of the outer tube by length L; and a collection container including a container body and a lid provided with a protrusion sleeve tube, the protrusion sleeve tube including a coupling portion at an end to be located outside the container body and a sleeve portion of a length equal to or longer than L having an open end to be located inside the container body, the coupling portion being designed to be coupled to the aforementioned one end of the outer tube in an air-tight manner.