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Jung HK, Mun M, Ali A, Cheong WJ. Fabrication of permanent silver cement frit at the inlet of micro-columns: a significant progress toward realization of disposable micro-columns. ACTA CHROMATOGR 2020. [DOI: 10.1556/1326.2018.00530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The advent of disposable micro-columns will be a hope of workers of chromatography-related laboratories. A very critical and important requirement is the formation of affordable inlet frits. Welding a metal screen to a column inlet is not recommended because of the risk of damage to stationary phase. In this study, the Tollens probe (silver mirror reaction) was adopted to make affordable frits. Silver is reduced on the particle surface and in an empty space among the particles, forming a solid silver network structure at the column inlet area by injecting the reaction solution into the packed column at a depth of one third (10 cm) of the packed bed (0.5 mm × 300 mm). The silver cement structure was successfully formed, and the silver cement frit endured mobile phase flow well when C18 modified ground silica monolith particles were used to make the packed bed. The formation of the silver cement frit was not successful when the stationary phase based on conventional spherical silica particles was used. Negligible reduction of chromatographic performance by the silver cemented frit was observed. This study serves as the first step toward realization of disposable micro-columns.
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Affiliation(s)
- Hong Kyeong Jung
- Department of Chemistry, Inha University, 100 Inharo, Namku, Incheon 22212, South Korea
| | - Miri Mun
- Department of Chemistry, Inha University, 100 Inharo, Namku, Incheon 22212, South Korea
| | - Ashraf Ali
- Department of Chemistry, Inha University, 100 Inharo, Namku, Incheon 22212, South Korea
| | - Won Jo Cheong
- Department of Chemistry, Inha University, 100 Inharo, Namku, Incheon 22212, South Korea
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Mun M, Cheong WJ. Disposable Microcolumn with a Welded Metal Frit and a Silver Cement Frit. B KOREAN CHEM SOC 2019. [DOI: 10.1002/bkcs.11710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Miri Mun
- Department of ChemistryInha University Incheon 22212 South Korea
| | - Won Jo Cheong
- Department of ChemistryInha University Incheon 22212 South Korea
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Gilar M, McDonald TS, Gritti F. Experimental evaluation of chromatographic performance of capillary and microfluidic columns with linear or curved channels. J Chromatogr A 2016; 1470:76-83. [DOI: 10.1016/j.chroma.2016.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 09/29/2016] [Accepted: 10/05/2016] [Indexed: 11/16/2022]
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