Articles by Ronald E. Majors - Chromatography Online
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Articles by Ronald E. Majors

Ronald E. Majors

"Column Watch" and "Sample Prep Perspectives" Editor

Ron Majors, editor of "Column Watch" and "Sample Prep Perspectives," has been with LCGC North America for over 26 years. Currently a senior scientist with Agilent Technologies, Wilmington, Delaware, Ron is known industry-wide as one of the premier chromatography experts in the field. He is also a member of LCGC's editorial advisory board.

Articles
The QuEChERS Revolution
September 1, 2010

An interview with the inventors about the successes, challenges and potential future directions of this technique.

The Use of Hollow Fibers in Liquid-Phase Microextraction
August 1, 2010

In this installment, the subject of LPME is reviewed, with emphasis on the use of hollow fibers.

QuEChERS: An Interview with the Inventors
July 1, 2010

The inventors of the QuEChERS technique present an update and a look at the future.

New Horizons in RP Chromatography
June 1, 2010

We focus on the characterization of reversed-phase columns with particular emphasis on the hydrophobic-subtraction model

New Horizons in Reversed-Phase Chromatography
June 1, 2010

The coauthors discuss the various attributes of and approaches to reversed-phase chromatography.

New Horizons in RP Chromatography
June 1, 2010

We focus on the characterization of reversed-phase columns with particular emphasis on the hydrophobic-subtraction model

Column Developments for SFC
May 1, 2010

The authors review the requirements for columns specifically designed and manufactured for SFC.

Continuing Innovations in Reversed-Phase Chromatography Column Technology
April 1, 2010

Ron Majors reports on some of the improvements that have been made over the years focusing on efficiency, stability, and selectivity.

HPLC Column Technology: State-of-The-Art
April 1, 2010

Improvements in HPLC column technology continue. Since the last Special Supplement on columns in 2008 (1), the continued need for high-throughput separation, the encountering of more complex samples, the need to analyze very polar compounds more easily, and the increased availability of very high pressure instruments has placed additional demands on the HPLC column. In terms of high throughput, no less than 24 companies have responded and have developed small particle columns of 2 µm and under. In addition, the number of superficially porous particle (SPP) columns has expanded, and users are finding that the high-efficiency-at-low-pressure advantage brings them added advantages. With more complex samples, longer columns packed with sub-2-µm particles require higher pressures with pumps now available to 1300 bar. It will be of interest to see if the lower pressure, high-efficiency SPP columns and monoliths, the latter of which have seen advances in the research of polymeric monoliths for applications to..

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