55227-U

Supel^™ QuE QuEChERS tube

Citrate Extraction Tube, pk of 50, suitable for EN 15662

• Synonim(y): QuEChERS
• Kod UNSPSC: 41115712
• NACRES: NB.21

Właściwości

• product name: Supel^™ QuE, Citrate Extraction Tube, pk of 50, suitable for EN 15662
• Materiały: polypropylene tube
• Poziom jakości: 100
• agency: suitable for EN 15662
• linia produktu: Supel^™
• skład: magnesium sulfate, 4 g ; sodium chloride, 1 g (Cat. No. S7653); sodium citrate dibasic sesquihydrate, 0.5 g (Cat. No. 71635); sodium citrate tribasic dihydrate, 1 g (Cat. No. S4641)
• opakowanie: pk of 50
• metody: QuEChERS: suitable
• pojemność probówki reakcyjnej (do wirowania): 15 mL
• Zastosowanie: food and beverages
• metoda separacji: ion exchange

Opis

Opis ogólny

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.

Zastosowanie

Supel^™ QuE citrate tube is used for the determination of pesticide residues on vegetables using various analytical techniques.

Przydatność

Suitable for extracting ~10 g food/agricultural sample. The citrate is to buffer the extraction to pH 5.0 - 5.5. At this pH, most acid and base labile pesticides are stable.

Informacje prawne

Supel is a trademark of Sigma-Aldrich Co. LLC

This page may contain text that has been machine translated.

Informacja o środkach bezpieczeństwa

• Kod klasy składowania: 13 - Non Combustible Solids
• Klasa zagrożenia wodnego (WGK): WGK 1
• Temperatura zapłonu (°F): Not applicable
• Temperatura zapłonu (°C): Not applicable