PDF catalog - Teknolab AS
PDF catalog - Teknolab AS
PDF catalog - Teknolab AS
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EXCH<br />
ION EXCHANGE SORBENTS<br />
Isolate ionizable (acidic or basic) analytes from aqueous or partially aqueous sample matrices using ion<br />
exchange retention mechanisms. The technical information for Biotage’s range of ISOLUTE ion exchange<br />
sorbents is summarized on these pages.<br />
ISOLUTE Anion Exchange Sorbents<br />
ISOLUTE anion exchange sorbents are used for the extraction of acidic compounds. Weak anion exchange<br />
sorbents (ISOLUTE NH2 and PSA) are suitable for the isolation of strongly acidic analytes (e.g. those containing<br />
sulfonic acid groups) or analytes that are unstable under acidic conditions. The sorbents’ positive charge can<br />
be eliminated by pH control, for analyte elution.<br />
ISOLUTE Anion Exchange Sorbents<br />
Sorbent Description Structure Average Particle<br />
Size (µm)<br />
Pore<br />
Diameter<br />
(Å)<br />
NH2 Aminopropyl -Si-(CH 2 ) 3 NH 2 50 60<br />
PSA<br />
Ethylenediamine-N-propyl<br />
(non-endcapped)<br />
-Si-(CH 2 ) 3 NH(CH 2 ) 2 NH 2 50 60<br />
SAX<br />
PE-AX<br />
Quaternary amine (chloride<br />
counter ion)<br />
Quaternary amine (acetate<br />
counter ion)<br />
-Si-(CH 2 ) 3 N + (CH 3 ) 3 Cl - 50 60<br />
-Si-(CH 2 ) 3 N + (CH 3 ) 3 OAc - 50 60<br />
60
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