产品名称
Discovery® DSC-NH2 SPE 小柱, bed wt. 50 mg, volume 1 mL, pk of 108
material
PE frit (20 μm)
polypropylene
feature
endcapped
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
amino phase
particle size
50 μm
pore size
70 Å pore size
pKa
9.8
capacity
~0.43 meq/g capacity
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
13 - Non Combustible Solids
wgk
WGK 3
flash_point_f
>464.0 °F
flash_point_c
> 240 °C
法规信息
新产品
此项目有
Heather M Nonhebel et al.
Functional plant biology : FPB, 47(8), 716-726 (2020-05-23)
Current understanding of the role of plant hormones during cereal grain filling is confounded by contradictory reports on hormone production that is based on poor methodology. We report here on the accurate measurement of indole-3-acetic acid (IAA) and abscisic acid
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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