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材料
polypropylene tube
品質等級
成份
bed wt., 1 g
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
sulfonic acid bonding
粒徑
50 μm
孔徑
0.9 mL/g pore volume
70 Å pore diameter
容量
0.8 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
- 多点键合的苯磺酸官能团，pKa (< 1.0)
- 反离子为 H+
- 硅胶基体可与强有机溶剂一起使用（不会收缩/溶胀）
- 极好的离子交换容量用于净化组合化学反应的溶液相（0.8 毫当量/克）（从反应副产物和多余试剂中移除目标分子）
- 当从水溶液基质中提取阳离子时，应考虑苯环的存在，它能够提供混合模式作用能力（疏水相互作用）
法律資訊
訊號詞
Danger
危險分類
Aquatic Chronic 2 - Eye Dam. 1 - Flam. Sol. 1 - Skin Corr. 1A - Skin Sens. 1
儲存類別代碼
4.1B - Flammable solid hazardous materials
水污染物質分類（WGK）
WGK 3
閃點（°F）
Not applicable
閃點（°C）
Not applicable
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
Melamine was extracted from milk using Supelco® Discovery® DSC-SCX SPE tubes. Analysis was performed by HPLC, using an Ascentis® Express HILIC column.
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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