Gas Chromatography (GC)

A second installment of "GC Connections" answers a reader's question about dual-column gas chromatography systems and their proper maintenance.

The authors describe a method of reductive chlorination that enables the determination of total PCB content by gas chromatography with flame ionization detection.

The authors compare their results in analyzing styrene–butadiene block copolymers by gel permeation chromatography with other methods, such as Fourier transform infrared spectroscopy and pyrolysis gas chromatography.

In part I, Hinshaw described a simple experiment with coins to explain the statistical nature of separations and to impart a better understanding of the physical processes inside the column. In part II, he compares this coin-toss simulation with chromatographic columns and describes differences between the analogy and real-world situations.

The guest authors summarize the history of this Japanese scientific instrument company and events in the development of its products.

Analysts can optimize their separations by using combinations of two columns connected in series. This type of coupled column system produces peak separations that are a combination of separations obtained on each column.

According to Analysis and Fate of Surfactants in the Aquatic Environment (Volume 40 of Wilson & Wilson's Comprehensive Analytical Chemistry), an understanding of the fate and behaviour of organic chemicals, such as surfactants?