John V. Hinshaw

Following on from the above Pittcon report, this month's "GC Connections" provides information on recently introduced gas chromatography instruments and accessories.

In this month's "GC Connections," John Hinshaw reports on new gas chromatography instruments and accessories exhibited at the 55th Pittsburgh Conference.

This month's column examines the basic measurements of a peak's size and shape for the purposes of assessing and monitoring chromatographic separations over a period of time.

The latest newcomer to the collection of GC techniques, GCXGC, is examined in this instalment. Although this technique is capable of delivering more GC information in a shorter time than other methods, its technical complexity has slowed down widespread acceptance. John Hinshaw explains...

John Hinshaw explores how to perform solid-phase microextraction and discusses the advantages provided by the technique.

Hinshaw provides an overview of scientific presentations and technology developments from the 26th International Symposium on Capillary Chromatography and Electrophoresis.

John Hinshaw writes about the role that the American Society for Testing and Materials International plays in chromatography standardization.

John Hinshaw examines developments in chromatography before 1952 that established the basis for the modern practice of GC.

The authors describe GC product introductions at Pittcon 2003.

John Hinshaw examines the tools and accessories that gas chromatographers use in their laboratories.

John Hinshaw examines the effects of system time constants and sampling rates on apparent peak shapes and areas.

John Hinshaw examines basic laboratory heating, ventilation, cooling, electrical, and space requirements for the successful installation of a gas chromatograph.

John Hinshaw looks into a carrier-gas leak and its effects on the chromatographic baseline.

John Hinshaw updates his glossary of GC terms and techniques.

John Hinshaw discusses the measurement of column flow and its interrelationship with carrier-gas velocity.

John Hinshaw reports about the 25th International Symposium on Capillary Chromatography and Electrophoresis.

This second column in a two-part series on gas cylinder safety presents safe procedures for installing, using, and replacing gas cylinders and pressure regulators.

John Hinshaw examines the principal safety issues surrounding the handling and use of compressed gas cylinders.

John Hinshaw presents a report about the new GC instruments and accessories exhibited at the 53rd Pittsburgh Conference.

John Hinshaw discusses using multilevel calibration for quantitative results computations.

John Hinshaw discusses computer-controlled pneumatics systems, including their advantages and disadvantages.

This month's column discusses strategies for minimizing nonlinearity in gas chromatography.

"GC Connections" examines the basics of peak integration for quantitation in chromatography with an emphasis on fast separations.

Hinshaw examines the effects of system time constants and sampling rates upon apparent peak shapes and areas when performing fast gas chromatography.

Hinshaw looks at how carrier-gas choices influence gas chromatograms and provides some guidelines for choosing the right one.

John Hinshaw examines the operating environment, setup, and operating conditions necessary to ensure high detector performance.

Hinshaw looks at causes and modes of premature column failure and at practices that ensure the longest possible column life.

Hinshaw explains how combining certain column dimensions and electronic pneumatic settings can produce unexpected results.

John Hinshaw examines inlet problems and their possible remedies.