Sample Preparation Strategies for Water Analysis
Sample Preparation Strategies for Water Analysis
Sample Preparation Strategies for Water Analysis
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SPE of Acids and Base/Neutrals<br />
Mixed-Mode Mixed Mode Logic<br />
Consider:<br />
Aniline, phenol and benzyl alcohol on Mixed-Mode SPE<br />
NH 2 OH OH<br />
At pH 2 on Oasis ® MCX: Aniline is cation –retained<br />
Phenol is neutral – retained<br />
Benzyl alcohol is neutral – retained<br />
At pH 11 on Oasis ® MAX: Aniline is neutral – retained<br />
Phenol is anion – retained<br />
Benzyl alcohol is neutral – retained<br />
©2007 <strong>Water</strong>s Corporation 49
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