Sample Preparation Strategies for Water Analysis
Sample Preparation Strategies for Water Analysis
Sample Preparation Strategies for Water Analysis
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Observations/Recommendations<br />
Fluorocarbon parts, tubing, etc. are potential sources of<br />
interferences<br />
— UPLC fluidic lines were conditioned with 2% TFA in propanol<br />
followed with 4% conc. ammonia in water (4 hours each step)<br />
Polypropylene (PP) lab ware may be best <strong>for</strong> sample prep<br />
— Do not use Teflon!! (possible positive interference)<br />
— Analytes may adsorb to glass (possible negative interference)<br />
C3-C5 analytes are highly volatile<br />
— Evaporative losses are possible, much more so at very low pH<br />
<strong>Sample</strong>s in glass vials may show loss of some analytes with<br />
time<br />
— Analyze within 24 hrs of sample prep<br />
©2007 <strong>Water</strong>s Corporation 30
Change language