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Analysis of the perfluorinated alkyl acids listed in EPA Method 537 along with fluorotelomeric alcohols and perfluorinated sulfonates were extracted using SPE (using ISOLUTE 101 500 mg/ 6 mL SDVB SPE columns) and analyzed on the LCMS 8045. Minimum Detection Limits(MDL) ranged from 0.69 to 3.25 ppt. Extraction recoveries were greater than 80% for all compounds, with surrogate recoveries within 10% of the true value.
Application Notes Column Drinking water English Environmental LC-MS/MS Polyfluorinated acids
In this catalog product information is displayed with easy-to-follow application details and supporting documentation. Ordering information is found following each product listing.
This application note demonstrates an effective and efficient suported liquid extraction protocol for the clean up and concentration of a range of forensically significant opiates and their metabolites ISOLUTE, unknown screening,
Acidic drugs Application Notes Basic drugs Column Forensic Naphyrone Post-Mortem fluids Post-Mortem tissue
This Chemistry Data Sheet includes specifics on the use of ISOLUTE 101 for the extraction of polar analytes from aqueous samples (page 1), ordering information (page 2) and a general discussion on non-polar sorbents (appendix page 3).
Laboratory chemica Not for therapeutic or diagnostic use
This method is recommended for the extraction of oligonucleotides from aqueous synthesis mixtures using a non-polar retention mechanism. See General Comments for more details on how this works.
This method is suggested for the purification (de-salting) of aqueous peptide synthesis mixtures using ISOLUTE 101 non-polar columns. See General Comments for details on how this approach works.
This method is suggested for the simultaneous extraction of acidic, neutral and basic compounds from postmortem tissues, blood and urine. The retention mechanism is hydrophobic.
The first decision that needs to be made is what the final analysis will be for the analyte. This will have an impact on the sample and cartridge size, as well as the final elution solvent. Gas chromatography offers higher sensitivity than HPLC, while HPLC is better suited for ionisable species and very high molecular weights. If LC-MS is available, minimal sample clean-up may be required.