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CHOOSING A dSPE SORBENT

For each type of matrix you can choose the most appropriate d-SPE. Tubes d-SPE with MgSO4 and PSA effectively remove polar organic acids, sugars, anthocyanine, lipids and sterols. Some fruits and vegetables (spinach, red peppers, carrots, etc.) with a high content of non-polar pigments such as carotenoids, chlorophyll, etc. require QuE-Lab® d-SPE with graphitized carbon black (GCB) for the discoloration. The elimination of pigments is necessary to avoid accumulations in the liners of GC’s injector.

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