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52737-U

Supelco

Discovery® DSC-WCX SPE Tube

bed wt. 50 mg, volume 1 mL, pk of 108

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About This Item

UNSPSC Code:
41115712
NACRES:
NB.21

material

polypropylene tube

Quality Level

product line

Discovery®

composition

bed wt., 50 mg

packaging

pk of 108

technique(s)

solid phase extraction (SPE): suitable

surface area

480 m2/g

volume

1 mL

matrix

Silica gel base material (irregularly shaped, acid washed)

matrix active group

carboxypropyl bonding

particle size

50 μm

pore size

0.9 mL/g pore volume
70 Å pore diameter

capacity

0.15 meq/g total capacity

application(s)

food and beverages

separation technique

ion exchange

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General description

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

Legal Information

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

pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

Aquatic Chronic 3 - Eye Dam. 1 - Skin Sens. 1

wgk_germany

WGK 3

flash_point_f

>464.0 °F

flash_point_c

> 240 °C


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Articles

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.

Protocols

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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