QuEChERS Validation Method for Acidic Pesticides - EURL ...
QuEChERS Validation Method for Acidic Pesticides - EURL ...
QuEChERS Validation Method for Acidic Pesticides - EURL ...
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<strong>QuEChERS</strong> – alkaline hydrolysis<br />
Example 2,4-D<br />
Acids are often covalently bound to matrix components<br />
and thus their concentration underestimated!<br />
CRL-SRM<br />
CRL Workshop Valencia Spain<br />
26. – 29. September 2007<br />
Selective systemic herbicide<br />
Control of broad leaved weed<br />
Plant growth regulator used to prevent premature fruit drop<br />
Formulations include free acid, acid,<br />
salts, salts,<br />
esters<br />
May <strong>for</strong>m conjugates<br />
<strong>Method</strong> designed to convert all possible residues to free acid<br />
Community Reference Laboratory<br />
<strong>for</strong> Pesticide Residues<br />
using Single Residue <strong>Method</strong>s
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