New Developments in QuEChERS methodology
New Developments in QuEChERS methodology
New Developments in QuEChERS methodology
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Ionizable Compounds - Acidic Pesticides<br />
LC-MS/MS, ESI (-), No PSA Cleanup<br />
EPRW 2006, Corfu<br />
Slide 8<br />
Recovery %<br />
Imazapyr<br />
Clopyralid<br />
Picloram<br />
Benazol<strong>in</strong><br />
4-CPA<br />
Imazethapyr<br />
Dicamba<br />
MCPA<br />
2,4-D<br />
pH5.5<br />
Imazaqu<strong>in</strong><br />
Naphthylacetic acid<br />
Fluoxypyr<br />
2,4,5-T<br />
Mecoprop<br />
Triclopyr<br />
2,4,5-TP<br />
Lower pKa values General Trend Higher pKa values<br />
2,4-DP<br />
Propyzamid<br />
Ioxynil<br />
Bentazon<br />
Bromoxynil<br />
Fluazifop<br />
Bromacil<br />
2,4-DB<br />
MCPB<br />
pH 6<br />
pH 5<br />
pH 4<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
pH 3
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