US 12,442,735 B2
Separation and concentration system for ionic compounds in sample, and method for analyzing ionic compounds using same
Byung Hyun Park, Daejeon (KR); Sehoon Kim, Daejeon (KR); Jaehyuk Nam, Daejeon (KR); Byoung Hyoun Kim, Daejeon (KR); and Su Youn Han, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/796,397
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Sep. 1, 2021, PCT No. PCT/KR2021/011781
§ 371(c)(1), (2) Date Jul. 29, 2022,
PCT Pub. No. WO2022/092537, PCT Pub. Date May 5, 2022.
Claims priority of application No. 10-2020-0143088 (KR), filed on Oct. 30, 2020; and application No. 10-2021-0113127 (KR), filed on Aug. 26, 2021.
Prior Publication US 2023/0341301 A1, Oct. 26, 2023
Int. Cl. G01N 1/40 (2006.01)
CPC G01N 1/405 (2013.01) [G01N 2001/4016 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A system for separating and concentrating an ionic compound in a sample, the system comprising:
at least one sample separation device;
a flexible holder having a plurality of slots, wherein each slot is configured to have a sample separation device inserted therein, wherein the at least one sample separation device is inserted into a slot of the flexible holder; and
an electrode for applying a voltage to the device,
wherein the at least one sample separation device comprises:
a separation portion;
a first storage portion; and
a second storage portion,
wherein the first and second storage portions are positioned on opposing sides of the separation portion,
wherein the separation portion is folded at a predetermined interval to form two or more discrete base units, wherein each of the two or more discrete base units includes a porous substrate, a pattern coating layer on one surface of the porous substrate and a reservoir formed in an area excluding the pattern coating layer and serving as a movement path, and
wherein each of the first and second storage portions includes a support, an absorbent pad inserted into the support, a conductive ink layer positioned on one side of the absorbent pad, and a selective ion permeable layer positioned on the other side of the absorbent pad and configured to connect to the separation portion.