I am working on pesticide (s-traizine herbicides) removal from water by using biopolymer-based metal organic framework. I have performed a solid phase extraction process for pesticides extraction and I have prepared 5 pre-concentration of 10 ppm, 20 ppm,30 ppm,40 ppm,, and 50 ppm by following the literature.After that we have to detect the amount of pesticides before extraction and after extraction by LCMS-MS. But the problem is there is the criteria of pesticides for LCMS is too lowest i.e ppb from 0.1 ppb, 0.001 ppb, and 0.0001 ppb and the requirement of our extraction experiment is 10 to 50 ppm .Could we prepare the LCMS-MS input concentration from obtaining eluent from removal experiment?Except these our UV-visible results shown good removal effeciency.
0.001 ppb, and 0.0001 ppb..these are not reachable concentrations for MS systems even if you apply enrichment steps using large-volume SPE I guess...
Since the question is not so clear to me I should indicate that You need to develop a method by proving the working limits of the extraction are in alignment with the range of detection concentrations. Meaning, that extraction efficiency between 10 to 50 ppm is not something that validates 0.1 ppb, 0.001 ppb, and 0.0001 ppb levels.
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