Sample Preparation Strategies for Water Analysis
Sample Preparation Strategies for Water Analysis
Sample Preparation Strategies for Water Analysis
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Optimized SPE Protocol<br />
Paraquat/Diquat<br />
Oasis ® WCX SPE Method<br />
Paraquat/Diquat<br />
Conditions <strong>for</strong> 3 cc cartridges<br />
Prepare <strong>Sample</strong><br />
adjust to pH 7<br />
Condition<br />
1mL methanol/ 1 mL water<br />
Load<br />
up to 25 mL sample<br />
Wash<br />
1 mL pH 7 buffer/1mL methanol<br />
Elute<br />
1.5 mL ACN/water/TFA 84:14:2<br />
Evaporate and Reconstitute<br />
0.5 mL mobile phase<br />
50:1 sample enrichment<br />
©2007 <strong>Water</strong>s Corporation 39
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