New Developments in QuEChERS methodology
New Developments in QuEChERS methodology
New Developments in QuEChERS methodology
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EPRW 2006, Corfu<br />
Slide 6<br />
Broaden Analyte Spectrum<br />
Some pesticides are sensitive to pH<br />
Some get ionized at certa<strong>in</strong> pH-values<br />
Acids: HX � H + + X -<br />
Bases: B + H + � BH +<br />
� Ionic form prefers to stay <strong>in</strong> the waterphase<br />
pH-Range of agricultural samples: ~2.5 – 7
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