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57228-U

Supelco

Discovery® DSC-WCX

pkg of 100 g

Synonym(e):

Discovery® DSC-WCX SPE-Bulkpackung

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About This Item

UNSPSC-Code:
41115712
NACRES:
NB.21

Verpackung

pkg of 100 g

Methode(n)

solid phase extraction (SPE): suitable

Aktive Matrixgruppe

carboxypropyl bonding

Anwendung(en)

food and beverages

Trenntechnik

ion exchange

Verwandte Kategorien

Allgemeine Beschreibung

Retention Mechanism: Cation exchange
Sample Matrix Compatibility: Organic or aqueous solutions

  • A polymerically bonded, ethylenediamine triacetic acid phase with a pKa of 4.8
  • Counter ion is Na+
  • Ion exchange capacity is ∼ 0.15 meq/g
  • Carries a negative charge at pH 6.8 or above
  • A pH of 2.8 or below neutralizes this phase for easier elution of strong cationic analytes that are neutralized only at extreme basic conditions
  • Typically used when dealing with very strong cationic (high pKa) compounds that may be irreversibly retained on strong cation exchangers
·

Rechtliche Hinweise

Discovery is a registered trademark of Merck KGaA, Darmstadt, Germany

Piktogramme

CorrosionExclamation mark
GHS05,GHS07

Signalwort

Danger

H-Sätze

H317,H318

Gefahreneinstufungen

Eye Dam. 1 - Skin Sens. 1

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

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Analysenzertifikate (COA)

Lot/Batch Number
161925
SP137994
138287
136100
134199

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Artikel

Solid Phase Extraction: Ion Exchange Methodology

SPE retention mechanism in this case is based on the electrostatic attraction of charged functional groups of the analyte(s) to oppositely charged functional groups on the sorbent.

Protokolle

Solid Phase Extraction: Normal Phase Methodology

Retention occurs through polar interaction between the sorbent and analytes. Typical sample matrices that can be employed in normal-phase SPE include hydrocarbon or fatty oils diluted in a solvent like hexane, isooctane, chlorinated solvent, THF, diethyl ether, or ethyl acetate.

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