推薦產品
材料
PE frit (20 μm)
polypropylene
產品線
Discovery®
特點
endcapped
成份
bed wt., 500 mg
包裝
pk of 54
技術
solid phase extraction (SPE): suitable
表面積
480 m2/g
容積
3 mL
基質
silica gel base material (irregularly shaped, acid washed)
基質活性組
amino phase
粒徑
50 μm
孔徑
70 Å pore size
pKa
9.8
容量
~0.43 meq/g capacity
應用
food and beverages
分離技術
ion exchange
normal phase
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一般說明
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
法律資訊
儲存類別代碼
11 - Combustible Solids
水污染物質分類(WGK)
WGK 3
閃點(°F)
>464.0 °F
閃點(°C)
> 240 °C
文章
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.
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.
條款
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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