55408-U
Supel™ QuE QuEChERS tube
Z-Sep+ Tube, centrifuge tube volume 2 mL, pack of 100 ea
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product name
Supel™ QuE, Z-Sep+ Tube, centrifuge tube volume 2 mL, pack of 100 ea
material
polypropylene tube
Quality Level
product line
Supel™
composition
Z-Sep+, 75 mg
packaging
pack of 100 ea
technique(s)
QuEChERS: suitable
centrifuge tube volume
2 mL
matrix active group
zirconia-based phase
application(s)
food and beverages
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General description
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
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
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flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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Articles
Pistachios 45% fat complicates pesticide analysis. But Z-Sep+ sorbent cleanup after QuEChERS extraction can reduce background for reliable results.
Protocols
A short abstract on a method using QuEChERS and GC/MS/MS for determination of fipronil & fipronil sulfone.
Related Content
Z-Sep sorbents improve fat and pigment extraction in QuEChERs solid phase extraction for sample preparation.
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