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55418-U Supelco

Supel QuE

Z-Sep Bulk

Synonym: QuEChERS

  •  NACRES NB.21

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Properties

Related Categories Analytical/Chromatography, Sample Preparation & Purification, Solid Phase Extraction (SPE), Supel QuE (QuEChERS) Products, Z-Sep Specialty Products for Challenging Matrices More...
Quality Level   100
composition   Z-Sep Bulk
packaging   pkg of 20 g
matrix   silica gel base material
particle size   22 μm
pore size   14 nm pore size
surface area   310 m2/g
Featured Industry   Food and Beverages

Description

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

[TM = "Supel"] QuE Z-Sep products enhance sample cleanup for complex matrices by effectively removing more fat and color from sample extracts than traditional phases for QuEChERS methods. By eliminating problematic matrix interferences, Z-Sep products provide more robust LC-MS and GC-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.
Z-Sep/C18 is recommended for cleanup of samples containing less than 15% fat.
Z-Sep is recommended for cleanup of samples prior to analysis of hydrophobic analytes.

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

Supel is a trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

Safety Information for this product is unavailable at this time.

Documents

Certificate of Analysis (COA)

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Protocols & Articles

Related Content

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Solid Phase Extraction: Fundamentals and Recent Developments [Webinar]

Solid Phase Extraction (SPE) has become a popular technique for sample preparation due to its convenience, effectiveness, relatively low solvent usage and versatility. The focus of this webinar is on...
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Peer-Reviewed Papers
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References

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