추천 제품
material
PE frit (20 μm)
polypropylene
Quality Level
특징
endcapped
구성
bed wt., 500 mg
포장
pk of 30
기술
solid phase extraction (SPE): suitable
표면적
480 m2/g
용적
6 mL
기질
silica gel base material (irregularly shaped, acid washed)
기질 활성군
amino phase
입자 크기
50 μm
공극 크기
70 Å pore size
pKa
9.8
용량
~0.43 meq/g capacity
응용 분야
food and beverages
분리 기술
ion exchange
normal phase
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일반 설명
Sample Matrix Compatibility: Organic or aqueous solutions
- Polymerically bonded, aminopropyl phase that is very polar in nature (hydrogen bonding) allowing for both normal phase and ion exchange applications
- A weak anion exchanger with a pKa of 9.8. At pH 7.8 or below, the functional groups are positively charged
- Ion exchange capacity is ∼ 0.43 meq/g.
- Allows the rapid release of very strong anions such as sulfonic acids that may be retained irreversibly by strong anion exchangers
- Can be used in some reversed-phase applications (due to ethyl spacer); however, it is predominately used as an ion-exchange or normal phase sorbent due to its polar nature
법적 정보
Storage Class Code
11 - Combustible Solids
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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