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Supel QuE

Z-Sep+ Tube, centrifuge tube volume 12 mL, pack of 50 ea

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Synonym(s):
QuEChERS
NACRES:
NB.21

composition

Z-Sep+, 500 mg

packaging

pack of 50 ea

technique(s)

QuEChERS: suitable

centrifuge tube volume

12 mL

application(s)

food and beverages

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General description

Dispersive SPE (dSPE), often referred to as the "QuEChERS" method (Quick, Easy, Cheap, Effective, Rugged, and Safe), is modern sample prep technique that is becoming increasingly popular in the area of multi-residue pesticide analysis in food and agricultural products.

Using the QuEChERS method, food/agricultural samples are first extracted with an aqueous miscible solvent (e.g., acetonitrile) in the presence of high amounts of salts (e.g., sodium chloride and magnesium sulfate) and/or buffering agents (e.g. citrate) to induce liquid phase separation and stabilize acid and base labile pesticides, respectively. Upon shaking and centrifugation, an aliquot of the organic phase is subjected to further cleanup using SPE. Unlike traditional methods using SPE tubes, in dispersive SPE, cleanup is facilitated by mixing bulk amounts of SPE (e.g., Supelclean PSA, ENVI-Carb, and/or Discovery DSC-18) with the extract. After sample cleanup, the mixture is centrifuged and the resulting supernatant can either be analyzed directly or can be subjected to minor further treatment before analysis.

Supelco carries a line of vials and centrifuge tubes containing pre-determined amounts of salts and SPE sorbents to support the most common method configurations used today.

Other Notes

SupelQuE Z-Sep+ enhances sample cleanup for complex matrices by effectively removing more fat and color from sample extracts than traditional phases for QuEChERS LC-MS methods. By eliminating problematic matrix interferences, Z-Sep products provide more robust LC-MS methods. This proprietary technology can replace C18 and PSA in your current methods without additional method development.

Z-Sep+ is recommended for cleanup of samples containing greater than 15% fat.

Legal Information

Certain uses of this product may be covered by the claims of one or more pending patent applications. For licensing inquiries please contact techserv@sial.com
AOAC is a registered trademark of AOAC International
Supel is a trademark of Sigma-Aldrich Co. LLC

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An overview of analytical methods and occurrence of benzotriazoles, benzothiazoles and benzenesulfonamides in the environment
Herrero, P., et al.
TrAC, Trends in Analytical Chemistry, 62, 46-55 (2014)
Anna Laura Capriotti et al.
Journal of chromatography. A, 1343, 69-78 (2014-04-22)
A sensitive, simple and rapid method for the simultaneous determination of 19 mycotoxins in biscuits (a dry matrix containing cereals and egg) has been developed using high performance liquid chromatography coupled to tandem mass spectrometry with electrospray source working in
Determination of toxic substances, pesticides and mycotoxins, in ginkgo biloba nutraceutical products by liquid chromatography Orbitrap-mass spectrometry
Martinez-Dominguez, G., et al.
Microchemical Journal, Devoted to the Application of Microtechniques in All Branches of Science, 118, 124-130 (2015)
Pol Herrero et al.
Journal of chromatography. A, 1339, 34-41 (2014-03-25)
A Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) extraction method followed by liquid chromatography-(Orbitrap) high resolution mass spectrometry was developed for the simultaneous determination of five benzotriazole, four benzothiazole and five benzenesulfonamide derivates in sewage sludge. While the method
Łukasz Rajski et al.
Journal of chromatography. A, 1304, 109-120 (2013-07-23)
Several extraction methods were evaluated in terms of recoveries and extraction precision for 113 pesticides in avocado: QuEChERS with various d-SPE clean-ups (Z-Sep, Z-Sep+, PSA+C18 and silica), miniLuke and ethyl acetate. Extracts were analysed using liquid chromatography coupled with triple

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