Retention Mechanism: Anion-exchange Sample Matrix Compatibility: Organic or aqueous solutions
• A polymerically bonded quarternary amine that remains positively charged at all pH levels • Counter ion is Cl- • Ion exchange capacity is ∼ 0.14 meq/g • Commonly used when extracting weaker anions (e.g., carboxylic acids) that may not bind strongly enough to weaker anion-exchangers • Selectivity can be modified by changing the counter ion with the appropriate buffer during conditioning
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