Sample Preparation Strategies for Water Analysis
Sample Preparation Strategies for Water Analysis
Sample Preparation Strategies for Water Analysis
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Oasis ® 2x4 Method: Method<br />
Starting Protocols For Acids and Bases<br />
For Bases:<br />
pKa 2-10<br />
Use Oasis ® MCX<br />
For Strong Acids<br />
pKa 10<br />
Use Oasis ® WCX<br />
Protocol 2<br />
Prepare <strong>Sample</strong><br />
Condition/Equilibrate<br />
Load <strong>Sample</strong><br />
Wash:<br />
5% NH 4OH<br />
Elute 1:<br />
100% MeOH<br />
For Acids<br />
pKa 2-8<br />
Use Oasis ® MAX<br />
Elute 2:<br />
2% Formic Acid in MeOH<br />
Strong<br />
Bases<br />
Acids<br />
©2007 <strong>Water</strong>s Corporation 33
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