PDF catalog - Teknolab AS
PDF catalog - Teknolab AS
PDF catalog - Teknolab AS
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POLAR SORBENTS<br />
options. The surface of the alumina can absorb molecules by interaction with the aluminium metal centre,<br />
hydrogen bonding with surface hydroxyl groups, or by ion exchange if the surface carries a charge. The extent<br />
of these different interactions can be enhanced by control of the surface pH by treatment with acidic, basic or<br />
neutral solutions.<br />
Nominal<br />
Moisture<br />
Content<br />
pH Application Chemistry<br />
Data<br />
Sheets<br />
Ordering<br />
Information<br />
Page<br />
< 2% 8.5 Extraction of polar compounds from a non-polar sample matrix.<br />
Alternative to silica based polar sorbents. Minimal retention of basic<br />
compounds. Activated for separation of chlorinated pesticides.<br />
< 0.1% 4.5 Extraction of polar compounds from a non-polar sample matrix.<br />
Alternative to silica based polar sorbents.<br />
< 0.1% 7.5 Extraction of polar compounds from a non-polar sample matrix.<br />
Particularly retentive for electronegative analytes. Alternative to silica<br />
based polar sorbents.<br />
< 0.1% 10 Extraction of polar compounds from a non-polar sample matrix. Has<br />
negative surface for specific retention of cations. Alternative to silica<br />
based polar sorbents.<br />
- 78<br />
- 79<br />
- 79<br />
- 79<br />
For more information on polar SPE procedures, see the QuickStart Guide (page 141-155).<br />
75
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