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Data from University of Hawaii Advance Knowledge in Chromatography (Determination and evaluation of gas holdup time with the quadratic equation model...

August 19, 2014



Data from University of Hawaii Advance Knowledge in Chromatography (Determination and evaluation of gas holdup time with the quadratic equation model and comparison with nonlinear models for isothermal gas chromatography)

By a News Reporter-Staff News Editor at Journal of Technology -- Investigators discuss new findings in Chromatography. According to news reporting originating in Honolulu, Hawaii, by VerticalNews journalists, research stated, "Gas holdup time (tM) is a basic parameter in isothermal gas chromatography (GC). Determination and evaluation of tM and retention behaviors of n-alkanes under isothermal GC conditions have been extensively studied since the 1950s, but still remains unresolved."

The news reporters obtained a quote from the research from the University of Hawaii, "The difference equation (DE) model [J. Chromatogr. A 1260: 215-223] reveals retention behaviors of n-alkanes excluding tM, while the quadratic equation (QE) model [J. Chromatogr. A 1260: 224-231] including tM is suitable for applications. In the present study, tM values were calculated with the QE model, which is referred to as tMT, evaluated and compared with other three typical nonlinear models. The QE model gives an accurate estimation of tM in isothermal GC. The tMT values are highly accurate, stable, and easy to calculate and use. There is only one tMT value at each GC condition."

According to the news reporters, the research concluded: "The proper classification of tM values can clarify their disagreement and facilitate GC retention data standardization for which tMT values are promising reference tM values."

For more information on this research see: Determination and evaluation of gas holdup time with the quadratic equation model and comparison with nonlinear models for isothermal gas chromatography. Journal of Chromatography A, 2013;1297():196-203. (Elsevier - www.elsevier.com; Journal of Chromatography A - www.elsevier.com/wps/product/cws_home/502688)

Our news correspondents report that additional information may be obtained by contacting L. Wu, Dept. of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI 96822, United States. Additional authors for this research include M. Chen, Y. Chen and Q.X Li.

Keywords for this news article include: Hawaii, Honolulu, United States, Chromatography, North and Central America.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Journal of Technology


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