Field Sampling for Pesticides, Using Solid Phase Microextraction/Capillary GC

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Courtesy of Sigma-Aldrich Co., LLC

An SPME portable field sampler can be used to extract analytes from samples in the field, then store them for up to 3 days, or longer, before performing the analysis. A field sampler with a 100µm polydimethylsiloxane-coated fiber extracts chlorinate, organophosphorus, triazine, and other pestricides from water.  After 24 hours of storage, analyte loss from storage containers was far greater than loss from a field sampler - more than 70% , versus 10-15%

 

 

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