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Discovery® DSC-NH2 SPE Tube

bed wt. 500 mg, volume 3 mL, pk of 54

Sinônimo(s):

NH2 (amine) SPE cartridge tube

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About This Item

Código UNSPSC:
41115712
NACRES:
NB.21

Materiais

PE frit (20 μm)
polypropylene

linha de produto

Discovery®

Características

endcapped

composição

bed wt., 500 mg

embalagem

pk of 54

técnica(s)

solid phase extraction (SPE): suitable

área da superfície

480 m2/g

volume

3 mL

matriz

silica gel base material (irregularly shaped, acid washed)

Grupo ativo da matriz

amino phase

tamanho de partícula

50 μm

tamanho de poro

70 Å pore size

pKa 

9.8

capacidade

~0.43 meq/g capacity

aplicação(ões)

food and beverages

técnica de separação

ion exchange
normal phase

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Descrição geral

Retention Mechanism: Normal phase or Anion-exchange
Sample Matrix Compatibility: Organic or aqueous solutions

  • Polymerically bonded, aminopropyl phase that is very polar in nature (hydrogen bonding) allowing for both normal phase and ion exchange applications
  • A weak anion exchanger with a pKa of 9.8. At pH 7.8 or below, the functional groups are positively charged
  • Ion exchange capacity is ∼ 0.43 meq/g.
  • Allows the rapid release of very strong anions such as sulfonic acids that may be retained irreversibly by strong anion exchangers
  • Can be used in some reversed-phase applications (due to ethyl spacer); however, it is predominately used as an ion-exchange or normal phase sorbent due to its polar nature

Informações legais

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

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 3

Ponto de fulgor (°F)

>464.0 °F

Ponto de fulgor (°C)

> 240 °C

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Certificados de análise (COA)

Lot/Batch Number
16100301
14166901
13274502
13274501
12546801

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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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