Patent ID: 9513257
Filing Date: 2016-12-06
CPC Classification: G01N

Claim Text:
1. A method for aging treatment of a discharge ionization current detector including: a plasma generation section that is configured of a dielectric tube and a plurality of electrodes attached on an outer circumference of the dielectric tube, the plasma generation section continuously generating dielectric-barrier discharge inside the dielectric tube by applying high AC voltage to the electrodes while causing plasma gas to flow through the dielectric tube; a sample ionization section that is connected to a downstream end of the dielectric tube and that ionizes components in sample gas by light at a time of discharge generation at the plasma generation section; and an ion detection section that detects a sample component ionized by the sample ionization section, the method comprising: supplying, as cleaning gas, mixed gas obtained by mixing inert gas with greater atomic weight than the plasma gas in the plasma gas, to the dielectric tube; and continuously generating the dielectric-barrier discharge over a predetermined period of time by the plasma generation section while supplying the cleaning gas.