推荐产品
材料
polypropylene tube
品質等級
產品線
Discovery®
成份
bed wt., 500 mg
包裝
pk of 30
技術
solid phase extraction (SPE): suitable
表面積
480 m2/g
容積
6 mL
基質
Silica gel base material (irregularly shaped, acid washed)
基質活性組
ammonium ion, quaternary bonding, polymerically bonded, chloride counter-ion
粒徑
50 μm
孔徑
0.9 mL/g pore volume
70 Å pore diameter
容量
0.14 meq/g total capacity
應用
food and beverages
分離技術
ion exchange
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一般說明
样品基质相容性:有机溶液或水溶液
- 多点键合的季铵,在所有 pH 值下都带正电荷
- 反离子为 Cl-
- 离子交换能力为 ~0.14 毫当量/克。
- 通常用来提取在弱阴离子交换固定相上键合作用不够强的弱阴离子(如羧酸)
- 在柱子活化过程中可使用适当的缓冲液来改变配对离子已达到修饰选择性的目的
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
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.
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
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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