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Application Note 039

Analysis of semi-volatile phosphorus pesticides by thermal desorption and method validation using sample re-collection

Application Note 039

Thermal desorption (TD)–GC(–MS) is the method of choice for most environmental applications and other trace organic monitoring work.

However, TD has historically been limited by its ‘one-shot’ nature, i.e. once a sample has been thermally desorbed, it is completely used up and therefore lost.

This application note demonstrates the quantitative performance possible with Markes’ TD systems for reactive, semi-volatile compounds such as phosphorus pesticides. The data also illustrates the use of re-collection technology as a tool for method validation.

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