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LCGC Europe-06-01-2017
LCGC Europe
Comparing the Separation Speed of Contemporary LC, SFC, and GC
June 01, 2017
Cover Story
30
6
Some 50 years after Giddings’s iconic comparison of the separation speed of gas chromatography (GC) and liquid chromatography (LC), the authors revisit this comparison using kinetic plots of the current state‑of‑the-art systems in LC, supercritical fluid chromatography (SFC), and GC. It is found that, despite the major progress LC has made in the past decade (sub-2-µm particles, pressures up to 1500 bar, core–shell particles), a fully optimized ultrahigh-pressure liquid chromatography (UHPLC) separation is still at least one order of magnitude slower than capillary GC. The speed limits of packed bed SFC are situated in between.
Method Adjustment the USP Way
June 01, 2017
LC Troubleshooting
30
6
When you want to adjust a United States Pharmacopeia (USP) method for a different size column or to meet system suitability criteria that fail, how much of a change can you make without revalidating the method?
New Sample Preparation Products and Accessories for 2017
June 01, 2017
Sample Presparation Perspectives
30
6
This yearly report on new products introduced at Pittcon 2017 (or in the preceding year) covers sample preparation instrumentation, supplies, and accessories.
UHPLC, Part 1: Perspectives and Instrumental Features
June 01, 2017
Perspectives in Modern HPLC
30
6
This instalment highlights historical perspectives on the development of ultrahigh-pressure liquid chromatography (UHPLC) into a modern high performance liquid chromatography (HPLC) platform and describes the important instrumental features common to most commercial equipment.
Evaluation of Retention and Selectivity Using Biphenyl Stationary Phases
June 01, 2017
Column Watch
30
6
In reversed-phase liquid chromatography (LC), C18 alkyl-based stationary phases have been the favourite of method developers. Phenyl stationary phases are an alternative that are thought to benefit from additional π-π mechanisms. Recently, there has been a growing interest in the use of phases based on the biphenyl moiety. This instalment of “Column Watch” looks at the retention mechanisms of biphenyl phases and contrasts them with those of more-common alkyl phases.
The 24th International Symposium on Electro- and Liquid Phase- Separation Techniques (ITP 2017)
June 01, 2017
Events
30
6
The 24th International Symposium on Electro- and Liquid Phase- Separation Techniques (ITP 2017) will be held in Sopot, Poland, at the Sheraton Hotel, 10–13 September 2017.
Vol 30 No 6 LCGC Europe June 2017 Regular Issue PDF
June 01, 2017
Issue PDF
30
6
Click the title above to open the LCGC Europe June 2017 regular issue, Vol 30, No 6, in an interactive PDF format.