推薦產品
材料
polypropylene tube
品質等級
成份
bed wt., 100 mg
包裝
pk of 108
技術
solid phase extraction (SPE): suitable
表面積
480 m2/g
容積
1 mL
基質
Silica gel base material (irregularly shaped, acid washed)
基質活性組
carboxypropyl bonding
粒徑
50 μm
孔徑
0.9 mL/g pore volume
70 Å pore diameter
容量
0.15 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
- 多点键合的乙二胺三乙酸相,pKa 为 4.8
- 反离子为 Na+
- 离子交换能力为 ~0.15 毫当量/克。
- pH 值为 6.8 或更大时带负电荷
- pH 值为 2.8 或更小时可使该相为中性不带电,从而更加容易地洗脱只在极强碱性条件下才能呈中性的强阳离子分析物
- 通常用于处理在强阳离子交换剂上不可逆保留的极强阳离子(高 pKa)化合物
法律資訊
訊號詞
Danger
危險聲明
危險分類
Aquatic Chronic 3 - Eye Dam. 1 - Skin Sens. 1
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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