I would like to know the opinion of experts in the matter, about this issue of special concern for me.
Please see the article, it may be helpful
Wells, M.J., 2003. Principles of extraction and the extraction of semivolatile organics from liquids. Sample Preparation Techniques in Analytical Chemistry, 162, p.37.
It depends mainly on the pka of the target molecules.
but it also has a lot of impact in the behaviour of the matrix as a hole
Dear all,
Thank you very much for your answers.
Shivani and Abdalla, I was rather thinking in multiresidue analysis of several type of pesticides in vegetable matrices.
Armando, I agree with you in that pKa is the key. This situation can be managed with more or less success when the type of pesticides of samples are known. However, the problem increases with field samples of unknown record. In these cases, could not be the pH control counterproductive? What is your opinion?
Does anybody have more suggestions/opinions? Thanks in advance!
JJ
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