Inlet Systems

Different injection devices for CGC have been developed over the years, but only two are applicable in HTCGC, namely COC and PTV injection. With both devices the sample can be introduced at low temperatures avoiding solute alteration or discrimination. For cool on-column injection, an injector device with an elongated secondary cooling tube is advised because this enables high oven temperatures to be used. A hot injector such as a split/splitless injector, has been used to analyse quaternary ammonium salts. At injection temperatures above 360°C the salts are de-methylated and the resulting tertiary amines can be analysed by HTCGC. Standard deviations are, however, quite high.

Solar Panel Basics

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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