추천 제품
material
polypropylene tube
Quality Level
제품 라인
Discovery®
구성
bed wt., 50 mg
포장
pk of 108
기술
solid phase extraction (SPE): suitable
표면적
480 m2/g
용적
1 mL
기질
Silica gel base material (irregularly shaped, acid washed)
기질 활성군
carboxypropyl bonding
입자 크기
50 μm
공극 크기
0.9 mL/g pore volume
70 Å pore diameter
용량
0.15 meq/g total capacity
응용 분야
food and beverages
분리 기술
ion exchange
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일반 설명
Sample Matrix Compatibility: Organic or aqueous solutions
- A polymerically bonded, ethylenediamine triacetic acid phase with a pKa of 4.8
- Counter ion is Na+
- Ion exchange capacity is ∼ 0.15 meq/g
- Carries a negative charge at pH 6.8 or above
- A pH of 2.8 or below neutralizes this phase for easier elution of strong cationic analytes that are neutralized only at extreme basic conditions
- Typically used when dealing with very strong cationic (high pKa) compounds that may be irreversibly retained on strong cation exchangers
법적 정보
신호어
Danger
유해 및 위험 성명서
Hazard Classifications
Aquatic Chronic 3 - Eye Dam. 1 - Skin Sens. 1
WGK
WGK 3
Flash Point (°F)
>464.0 °F
Flash Point (°C)
> 240 °C
문서
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.
프로토콜
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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