Discharge ionization current detector
AssigneeShimadzu Corporation
InventorsShigeyoshi HORIIKE, Kei SHINADA
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Abstract
A discharge ionization current detector of the present invention is used for a detector for a gas chromatograph and suitable for analyzing high-boiling components. A discharge ionization current detector 10 is mainly constituted by a plasma generating section 20 and an ion collecting section 30. Regarding the ion collecting section 30, an ion collecting electrode 31 and a bias electrode 32 are arranged, and furthermore, an insulating member made of sapphire or aluminum oxide having a purity equal to or greater than 99.5% is arranged between the ion collecting electrode 31 and the bias electrode 32.
Claims9
A discharge ionization current detector used for a gas chromatograph, comprising:
- a) a plasma generating section configured to generate plasma;
- and
- b) an ion collecting section including:
- a bias electrode configured to generate an electric field that guides sample ions, which are ionized by light emitted by the plasma generated by the plasma generating section, to a later-described ion collecting electrode;
- the ion collecting electrode configured to collect the sample ions;
- and
- an insulating member arranged between the ion collecting electrode and the bias electrode and made of aluminum oxide or sapphire having a purity equal to or larger than 99.5%.
Dependencies are inferred from the claim text.