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Streamlined sample cleanup using combined dispersive solid-phase extraction and in-vial filtration for analysis of pesticides and environmental pollutants in shrimp.

Analytica chimica acta (2014-05-17)
Lijun Han, Yelena Sapozhnikova, Steven J Lehotay
ABSTRACT

A new method of sample preparation was developed and is reported for the first time. The approach combines in-vial filtration with dispersive solid-phase extraction (d-SPE) in a fast and convenient cleanup of QuEChERS (quick, easy, cheap, effective, rugged, and safe) extracts. The method was applied to simultaneous analysis of 42 diverse pesticides and 17 environmental contaminants, including polycyclic aromatic hydrocarbons, polychlorinated biphenyls (PCBs), and flame retardants, in shrimp as the sample matrix. Final extracts were analyzed by both low-pressure gas chromatography - triple quadrupole tandem mass spectrometry (LPGC-MS/MS), and high-performance liquid chromatography - triple quadrupole tandem mass spectrometry (HPLC-MS/MS) to provide a wide scope of analysis for targeted analytes. During method development, several different commercial sorbents for d-SPE were investigated and compared with respect to analyte recoveries. The method was validated at 10, 50, and 100 ng g(-1) spiking levels (10-fold lower for PCBs), and the results for nearly all analytes were between 70 and 115% recoveries with ≤17% relative standard deviations. The method was shown to be simple, fast, and effective for multi-application analysis of chemical residues in the representative food and environmental marker matrix.

MATERIALS
Product Number
Brand
Product Description

Supelco
Supel QuE, Citrate Extraction Tube, pk of 50, suitable for EN 15662
Supelco
Supel QuE, Acetate Tube, pk of 50, AOAC® 2007.01
Supelco
Supel QuE, PSA Tube, pk of 50, suitable for EN 15662:2008 per BS
Supelco
Supel QuE, PSA Tube, pk of 50, AOAC® 2007.01
Supelco
Supel QuE, PSA/C18/ENVI-Carb Tube, pk of 50, AOAC® 2007.01
Supelco
Supel QuE, PSA Tube, pack of 100, AOAC® 2007.01
Supelco
Supel QuE, PSA/C18 Tube, pack of 100, AOAC® 2007.01
Supelco
Supel QuE, PSA/C18/ENVI-Carb Tube, pack of 100, AOAC® 2007.01
Supelco
Supel QuE, Z-Sep/C18 Tube, centrifuge tube volume 2 mL, pack of 100
Supelco
Supel QuE, Z-Sep+ with MgSO4 Tube, centrifuge tube volume 12 mL, pack of 50 ea
Supelco
Supel QuE, Z-Sep with MgSO4 Tube, centrifuge tube volume 12 mL, pack of 50 ea
Supelco
Supel QuE, Z-Sep+ Tube, centrifuge tube volume 2 mL, pack of 100 ea
Supelco
Supel QuE, Z-Sep Tube, centrifuge tube volume 2 mL, pack of 100 ea
Supelco
Supel QuE, Z-Sep+ with MgSO4 Tube, centrifuge tube volume 2 mL, pack of 100 ea
Supelco
Supel QuE, Z-Sep with MgSO4 Tube, centrifuge tube volume 2 mL, pack of 100 ea
Supelco
Supel QuE, PSA Tube, pack of 50 ea, suitable for EN 15662:2008 per BS, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, PSA/C18 Tube (Shaker Compatible), pk of 50, suitable for EN 15662:2008 per BS, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, PSA/ENVI-Carb Tube 1, pk of 50, suitable for EN 15662:2008 per BS, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, PSA/ENVI-Carb Tube 2, pk of 50, suitable for EN 15662:2008 per BS, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, PSA Tube, pk of 50, AOAC® 2007.01, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, PSA/C18 Tube, pk of 50, AOAC® 2007.01, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, PSA/C18/ENVI-Carb Tube, pk of 50, AOAC® 2007.01, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, Z-Sep+ Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, Z-Sep Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, Z-Sep with MgSO4 Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, Z-Sep/C18 Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, Z-Sep+ with MgSO4 Tube, pk of 50, centrifuge tube volume 15 mL , Shaker Compatible