PDA is best detector in HPLC and ECD in GLC for pesticide residue studies
Hello,
I think the best would be chapter GC / MS / FID. With a sufficiently large number of patterns you specify the minimum contents of pesticide residues. The HPLC method is somewhat weaker, it can not be with them to determine the presence and content of all residues. This is important when trying to food, because they have different roughage difficult to remove, they cause difficulties in the analysis by liquid chromatography. Therefore, better results are obtained by using the media as a gas.
You can use GC-MS in Full Scan mode. But, you need have a specialized column to different groups of pesticide.
El mejor detector para cuantificar plaguicidas organoclorados es el de Captura de electrones en cromatografía de gases. Para los organofosforados el detector más frecuente es Ionización de flama y/o detector N-P.
Hay herbicidas como la atrazina, el 2,4-D que se miden con HPLC y detector de diodos o de fluorescencia en UV.
La confirmación de algunos analitos se hace con cromatografía de gases acoplada a espectrometría de masas.
Be specific! Let me know which group of pesticides you are interested? (I.e., OC, OP, SP, Cb etc.,), matrix?
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