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Compounds are retained by non-polar interactions from polar solvents or matrix environments. They are bound by dispersion forces / van der Waals forces. Elution, or disruption of the non-polar interactions is achieved by solvents or solvent mixtures with sufficient non-polar character. Some polar solvents, such as acetonitrile have enough non-polar characteristics to disrupt nonpolar binding to cause elution of a compound from the sorbent. Methanol can be used as well, although it should be noted that it will take off both polar and nonpolar analytes of interest and interferences.
Sorbent Specifications:
Characteristic: Hydrophobic
Organic Loading = 11.1%
Average Pore Size = 60Å
Surface Area = 500 m²/g
Pore Volume = 0.77 cm³/g
Application: Optimized for non polar analytes, including pesticides, PCBs, PAHs, and formaldehyde.