US 11,982,653 B2
Ion chromatograph and ion component analysis method
Katsumasa Sakamoto, Kyoto (JP); and Masanori Fujiwara, Kyoto (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP)
Appl. No. 17/599,768
Filed by SHIMADZU CORPORATION, Kyoto (JP)
PCT Filed Apr. 1, 2019, PCT No. PCT/JP2019/014487
§ 371(c)(1), (2) Date Sep. 29, 2021,
PCT Pub. No. WO2020/202436, PCT Pub. Date Oct. 8, 2020.
Prior Publication US 2022/0155265 A1, May 19, 2022
Int. Cl. G01N 30/38 (2006.01); B01D 15/36 (2006.01); B01D 15/42 (2006.01); G01N 30/02 (2006.01)
CPC G01N 30/38 (2013.01) [B01D 15/361 (2013.01); B01D 15/426 (2013.01); G01N 2030/027 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An ion chromatograph comprising:
a separation column that separates a sample included in an eluent into ion species components;
an ion suppressor that has an eluent flow path through which the eluent led out from the separation column passes, a first electrode liquid flow path through which a first electrode liquid passes and a second electrode liquid flow path through which a second electrode liquid passes;
a detector that detects a sample included in the eluent that has passed through the ion suppressor; and
an electrode liquid supplier that supplies each of the first and second electrode liquids to each of the first and second electrode liquid flow paths of the ion suppressor, wherein
the eluent liquid flow path includes first and second flow-path portions that are opposite to each other,
the first and second flow-path portions communicate with each other such that a direction in which the eluent flows through the first flow-path portion and a direction in which the eluent flows through the second flow-path portion are opposite to each other,
the first electrode liquid flow path is arranged to be opposite to the first flow-path portion,
the second electrode liquid flow path is arranged to be opposite to the second flow-path portion,
a connection state between the electrode liquid supplier, and the first and second electrode liquid flow paths is configured to be switchable between a first connection state and a second connection state, and
the electrode liquid supplier,
when the connection state is in the first connection state, supplies the first and second electrode liquids to the ion suppressor, such that a direction in which the first electrode liquid flows through the first electrode liquid flow path is same as a direction in which the eluent flows through the first flow-path portion and a direction in which the second electrode liquid flows through the second electrode liquid flow path is same as a direction in which the eluent flows through the second flow-path portion, and
when the connection state is in the second connection state, supplies the first and second electrode liquids to the ion suppressor, such that a direction in which the first electrode liquid flows through the first electrode liquid flow path is opposite to a direction in which the eluent flows through the first flow-path portion and a direction in which the second electrode liquid flows through the second electrode liquid flow path is opposite to a direction in which the eluent flows through the second flow-path portion.