1 / 1

Mix homogeneously (if necessary)

Tea. 7) Shake ~1min. 6) Add *Q-salt mixture. 8) Centrifuge. 5) Shake ~1min. 9) D-SPE with PSA & CaCl 2. Weigh 2g of sample homogenate Add 10mL H 2 O Add 10mL AcN Add ISTD (eg TPP/PCB138/Nicarbazin) 10µL /mL extract Shake ~1min (vigorously)

moira
Télécharger la présentation

Mix homogeneously (if necessary)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tea 7) Shake ~1min 6) Add *Q-salt mixture 8) Centrifuge 5) Shake ~1min 9) D-SPE with PSA & CaCl2 • Weigh 2g of sample homogenate • Add 10mL H2O • Add 10mL AcN • Add ISTD (eg TPP/PCB138/Nicarbazin) • 10µL /mL extract • Shake ~1min (vigorously) • Add QuEChERS salt mixture*, shake immediately • Shake ~1min (vigorously) • 8) Centrifuge ~2min @ rpm 3000) • • (Take aliquote for the determination of acidic analytes) • 9) D-SPE cleanup (shake vigorously 60sec) with • • PSA 50mg /mL extract • •CaCl250mg /mL extract • Centrifuge ~1min @ rpm 3000 • Take exact aliquote e.g. 4mL • 12) Adjust pH value with formic acid 5% • 10µL /mL extract in AcN • 13) Fill ito GC-vials for GC/LC analysis 4) Add ISTD 10) Centrifuge 3) Add 10 mL AcN 11) Take exact aliquot e.g. 4mL 2) Add 10 mL H2O 12) Adjust pH value with formic acid solution 1) Weigh 2g of sample homogenate Mix homogeneously (if necessary) http://www.cvua-stuttgart.de *MgSO4 4g NaCl 1g Na2Citrat Sequihydrat 0.5g Na3Citrat Dihydrat 1g

More Related