US 12,345,651 B2
Gas chromatographic component analysis system and component detector including an oxidation-reduction furnace, reaction cell and photodetector
Sixu Li, Kyoto (JP); and Masaru Kozakura, Kyoto (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP)
Appl. No. 17/298,301
Filed by SHIMADZU CORPORATION, Kyoto (JP)
PCT Filed Jan. 29, 2019, PCT No. PCT/JP2019/002999
§ 371(c)(1), (2) Date May 28, 2021,
PCT Pub. No. WO2020/121539, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. PCT/JP2018/045623 (WO), filed on Dec. 12, 2018.
Prior Publication US 2022/0026406 A1, Jan. 27, 2022
Int. Cl. G01N 21/76 (2006.01); B01D 53/02 (2006.01); G01N 30/06 (2006.01); G01N 30/74 (2006.01)
CPC G01N 21/766 (2013.01) [B01D 53/025 (2013.01); G01N 30/06 (2013.01); G01N 30/74 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A component analysis system comprising:
a gas chromatograph having a separation column; and
a component detector,
the component detector including an oxidation-reduction furnace that has a first flow path through which a gas including a sample component separated by the separation column flows, and oxidizes and reduces the sample component in the gas flowing through the first flow path,
a reaction cell that has an inlet for the gas including the reduced sample component and generates a chemical reaction accompanied by emission of light with respect to the sample component introduced from the inlet,
a photodetector that detects light generated in the reaction cell, and
a detector casing that stores the oxidation-reduction furnace and the reaction cell,
wherein a downstream end of the first flow path and the inlet of the reaction cell are connected via a second flow path,
the oxidation-reduction furnace and the reaction cell are held by the detector casing, and
the second flow path is provided outside of the detector casing and is attachable to and detachable from a downstream end of the oxidation-reduction furnace and the inlet of the reaction cell.
 
7. A component detector used along with a gas chromatograph having a separation column,
the component detector comprising:
an oxidation-reduction furnace that has a first flow path through which a gas including a sample component separated by the separation column flows, and oxidizes and reduces the sample component in the gas flowing through the first flow path;
a reaction cell that has an inlet for the gas including the reduced sample component and generates a chemical reaction accompanied by emission of light with respect to the sample component introduced from the inlet;
a photodetector that detects light generated in the reaction cell; and
a detector casing that stores the oxidation-reduction furnace and the reaction cell, wherein a downstream end of the first flow path and the inlet of the reaction cell are connected via a second flow path, the oxidation-reduction furnace and the reaction cell are held by the detector casing, and
the second flow path is provided outside of the detector casing and is attachable to and detachable from a downstream end of the oxidation-reduction furnace and the inlet of the reaction cell.
 
8. A component analysis system comprising:
a gas chromatograph having a separation column; and
a component detector,
the component detector including
an oxidation-reduction furnace that has a first flow path through which a gas including a sample component separated by the separation column flows, and oxidizes and reduces the sample component in the gas flowing through the first flow path,
a reaction cell that has an inlet for the gas including the reduced sample component and generates a chemical reaction accompanied by emission of light with respect to the sample component introduced from the inlet,
a photodetector that detects light generated in the reaction cell, and
a detector casing that stores the oxidation-reduction furnace and the reaction cell,
wherein a lower end surface of the oxidation-reduction furnace and an upper end surface of the reaction cell are in direct contact with each other, and
the oxidation-reduction furnace and the reaction cell are held by the detector casing.