Sample Preparation Strategies for Water Analysis
Sample Preparation Strategies for Water Analysis
Sample Preparation Strategies for Water Analysis
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Oasis ® Mixed-Mode Mixed Mode Sorbents<br />
<strong>Strategies</strong> <strong>for</strong> Multiresidue Isolation and Enrichment<br />
(acids, bases and neutrals together)<br />
Mixed-Mode strong ion-exchange sorbents (Oasis MCX and Oasis<br />
MAX) can simultaneously retain polar acids and bases better than<br />
the best reversed-phase sorbents such as Oasis HLB<br />
— Oasis ® MCX, sample adjusted to low pH<br />
o acids/neutrals retained by reversed-phase<br />
o bases retained by mixed-mode cation-exchange<br />
— Oasis ® MAX, sample adjusted to high pH<br />
o acids retained by mixed-mode anion-exchange<br />
o bases/neutrals retained by reversed-phase<br />
©2007 <strong>Water</strong>s Corporation 47
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