产品名称
Discovery® DSC-NH2 SPE 小柱, bed wt. 500 mg, volume 3 mL, pk of 54
material
PE frit (20 μm)
polypropylene
product line
Discovery®
feature
endcapped
composition
bed wt., 500 mg
packaging
pk of 54
technique(s)
solid phase extraction (SPE): suitable
surface area
480 m2/g
volume
3 mL
matrix
silica gel base material (irregularly shaped, acid washed)
matrix active group
amino phase
particle size
50 μm
pore size
70 Å pore size
pKa
9.8
capacity
~0.43 meq/g capacity
Quality Level
application(s)
food and beverages
separation technique
ion exchange
normal phase
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General description
保留机理：正相或阴离子交换
样品基质相容性：有机溶液或水溶液
样品基质相容性：有机溶液或水溶液
- 多点键合，极性极强的氨丙基相（氢键），可用于正相和离子交换应用
- 弱阴离子交换剂，pKa 为 9.8。在 7.8 或更低的 pH 下，官能团带正电荷
- 离子交换能力为 ~0.43 毫当量/克。
- 能够快速释放可被强阴离子交换剂不可逆保留的极强阴离子（如磺酸）
- 可用于某些反相应用（原因在于丙基碳链）；然而由于其极性，它主要用作离子交换或正相吸附剂
Legal Information
Discovery is a registered trademark of Merck KGaA, Darmstadt, Germany
存储类别
11 - Combustible Solids
wgk
WGK 3
flash_point_f
>464.0 °F
flash_point_c
> 240 °C
商品
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.
实验方案
Normal-phase SPE separates analytes based on polar interaction with sorbents in diverse sample matrices.
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