Historical Development

enormous advance in the separation and analysis of hydrocarbon mixtures. Gas chromatography has now matured into the method of choice for the separation of volatile, thermally stable compounds with an upper molecular weight limit of about 1000 Da and is one of the most widely used laboratory methods today.

The development of gas chromatography was unique in many ways in particular the fact that, although workers in some academic establishments made notable contributions, the major impetus came from industry and from instrument companies. Another factor in its rapid development was the establishment of discussion groups in many countries dedicated to disseminating information on new advances. The Gas Chromatography Discussion Group (now the Chromatographic Society) was established in the UK in 1956 and similar bodies were formed in other parts of Europe and in North America soon afterwards. The history of gas chromatography has been described a number of times; the book by Zlatkis and Ettre gives the reminiscences of some of the early workers.

Four papers are identified in Table 1 that caused major advances in gas chromatography followed by periods of consolidation. These aspects are considered in more detail below.

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Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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