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Exploring the possibilities of cryogenic cooling in liquid chromatography for biological applications: a proof of principle

(2012) ANALYTICAL CHEMISTRY. 84(4). p.2031-2037
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Abstract
The possibilities to use cryogenic cooling to trap components in liquid chromatography was investigated. In a first step, van 't Hoff plots were measured with a reversed-phase column using the temperature control unit of a conventional high performance liquid chromatography (HPLC) system to gain insight in the retention behavior of proteins at low temperatures. It was estimated that retention factors in the range of k = 10(4) could be achieved at T = -20 degrees C for lysozyme, indicating that temperature is a usable parameter to trap components in LC. In a next step, trapping experiments were carried out on a nano-LC system, equipped with a UV-detector, using a commercial reversed-phase column. An in-house built setup, allowing cooling of a segment of the column, down to temperatures below T = -20 degrees C, was used to trap components. Experiments were conducted under isocratic and gradient conditions with methanol as organic solvent. It is demonstrated that, by thermally trapping and elution of components, an enhanced S/N ratio and decreased peak widths can be obtained. At the same time, a significant increase in pressure drop occurs during the cooling process. Limitations and benefits of the technique are further discussed.
Keywords
HPLC, cryogenic, comprehensive, modulator, GAS-CHROMATOGRAPHY, SUPERHEATED WATER, TEMPERATURE, PERFORMANCE, COLUMNS, ELUENT, DEVICE

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MLA
Eghbali, Hamed, Koen Sandra, Bart Tienpont, et al. “Exploring the Possibilities of Cryogenic Cooling in Liquid Chromatography for Biological Applications: a Proof of Principle.” ANALYTICAL CHEMISTRY 84.4 (2012): 2031–2037. Print.
APA
Eghbali, H., Sandra, K., Tienpont, B., Eeltink, S., Sandra, P., & Desmet, G. (2012). Exploring the possibilities of cryogenic cooling in liquid chromatography for biological applications: a proof of principle. ANALYTICAL CHEMISTRY, 84(4), 2031–2037.
Chicago author-date
Eghbali, Hamed, Koen Sandra, Bart Tienpont, Sebastiaan Eeltink, Patrick Sandra, and Gert Desmet. 2012. “Exploring the Possibilities of Cryogenic Cooling in Liquid Chromatography for Biological Applications: a Proof of Principle.” Analytical Chemistry 84 (4): 2031–2037.
Chicago author-date (all authors)
Eghbali, Hamed, Koen Sandra, Bart Tienpont, Sebastiaan Eeltink, Patrick Sandra, and Gert Desmet. 2012. “Exploring the Possibilities of Cryogenic Cooling in Liquid Chromatography for Biological Applications: a Proof of Principle.” Analytical Chemistry 84 (4): 2031–2037.
Vancouver
1.
Eghbali H, Sandra K, Tienpont B, Eeltink S, Sandra P, Desmet G. Exploring the possibilities of cryogenic cooling in liquid chromatography for biological applications: a proof of principle. ANALYTICAL CHEMISTRY. 2012;84(4):2031–7.
IEEE
[1]
H. Eghbali, K. Sandra, B. Tienpont, S. Eeltink, P. Sandra, and G. Desmet, “Exploring the possibilities of cryogenic cooling in liquid chromatography for biological applications: a proof of principle,” ANALYTICAL CHEMISTRY, vol. 84, no. 4, pp. 2031–2037, 2012.
@article{3233753,
  abstract     = {The possibilities to use cryogenic cooling to trap components in liquid chromatography was investigated. In a first step, van 't Hoff plots were measured with a reversed-phase column using the temperature control unit of a conventional high performance liquid chromatography (HPLC) system to gain insight in the retention behavior of proteins at low temperatures. It was estimated that retention factors in the range of k = 10(4) could be achieved at T = -20 degrees C for lysozyme, indicating that temperature is a usable parameter to trap components in LC. In a next step, trapping experiments were carried out on a nano-LC system, equipped with a UV-detector, using a commercial reversed-phase column. An in-house built setup, allowing cooling of a segment of the column, down to temperatures below T = -20 degrees C, was used to trap components. Experiments were conducted under isocratic and gradient conditions with methanol as organic solvent. It is demonstrated that, by thermally trapping and elution of components, an enhanced S/N ratio and decreased peak widths can be obtained. At the same time, a significant increase in pressure drop occurs during the cooling process. Limitations and benefits of the technique are further discussed.},
  author       = {Eghbali, Hamed and Sandra, Koen and Tienpont, Bart and Eeltink, Sebastiaan and Sandra, Patrick and Desmet, Gert},
  issn         = {0003-2700},
  journal      = {ANALYTICAL CHEMISTRY},
  keywords     = {HPLC,cryogenic,comprehensive,modulator,GAS-CHROMATOGRAPHY,SUPERHEATED WATER,TEMPERATURE,PERFORMANCE,COLUMNS,ELUENT,DEVICE},
  language     = {eng},
  number       = {4},
  pages        = {2031--2037},
  title        = {Exploring the possibilities of cryogenic cooling in liquid chromatography for biological applications: a proof of principle},
  url          = {http://dx.doi.org/10.1021/ac203252u},
  volume       = {84},
  year         = {2012},
}

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