Application Note: Determination of Pesticides from Aqueous Samples Using Atlantic HLB SPE Disks
17 September 2012

This application note was demonstrates the extraction of five organophosphate compounds (Monocrotophos, Diazinon, Malathion, EPN, and Methamidaphos) using one solid phase extraction method with one pre-treatment step of sodium chloride NaCl. This method, using the Horizon SPE-DEX 4790 automated SPE extraction system, enables fast extraction times while yielding excellent recoveries of all five organophosphate pesticides of interest in this study. This method employing a combination of salt addition to the sample matrices as a pre-step followed by SPE extraction can also serve as a model extraction method for other extremely hydrophilic compounds that normally would be difficult to get good extraction recoveries.

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