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Discovery® DSC-WCX SPE Bulk Packing

pkg of 100 g

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About This Item

Código UNSPSC:
41115712
NACRES:
NB.21

embalagem

pkg of 100 g

técnica(s)

solid phase extraction (SPE): suitable

Grupo ativo da matriz

carboxypropyl bonding

aplicação(ões)

food and beverages

técnica de separação

ion exchange

Categorias relacionadas

Descrição geral

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
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Informações legais

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

Pictogramas

CorrosionExclamation mark
GHS05,GHS07

Palavra indicadora

Danger

Frases de perigo

H317,H318

Classificações de perigo

Eye Dam. 1 - Skin Sens. 1

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 3

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Choose from one of the most recent versions:

Certificados de análise (COA)

Lot/Batch Number
161925
SP137994
138287
136100
134199

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Artigos

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.

Protocolos

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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