| 摘要 |
PURPOSE:To prevent the reverse pollution of a sample to be treated by providing a sample-containing vessel which is provided with an ultraviolet lamp, an air supplying cylinder and an exhaust cylinder in the inside of a box provided with an air inlet and an exhaust vent. CONSTITUTION:A sample 1 is incorporated in a sample-containing vessel 20 which is made of synthesized quartz and ultraviolet rays are irradiated from the outside of the vessel 20. Oxygen, nitrogen and air or the like are fed therein through a filter 25 provided to an air supplying cylinder 21 and the polluted substance volatilized from the surface of the sample is discharged to the outside of an irradiation box 10 through an exhaust cylinder 22. An air inlet 11 and an exhaust vent 12 are provided to the box 10 and the volatilized substance is removed and reverse pollution is prevented by passing oxygen, nitrogen or the like therethrough. |
