|Chemical description||Ethylenediamine-n-propyl (non-endcapped) functionalized silica. Manufactured using trifunctional silane.|
|Sorbent type||Weak anion exchange. Can also be used as a polar sorbent|
|Average particle size||50 µm|
|Pore diameter||60 Å|
|Exchange capacity||0.4 meq/g|
|pKa||10.1 and 10.9|
The first decision that needs to be made is what the final analysis will be for the analyte. This will have an impact on the sample and cartridge size, as well as the final elution solvent. Gas chromatography offers higher sensitivity than HPLC, while HPLC is better suited for ionisable species and very high molecular weights. If LC-MS is available, minimal sample clean-up may be required.
Tags: Manuals & User Guides
The ISOLUTE® family of polar sorbents are used to extract polar organic compounds from non-polar matrixes.
There are many functional groups that can exhibit polar interactions, and they have different selectivities.Some of the polar interactions that exist include dipole-dipole,dipole-induced dipole and hydrogen bonding. Polar interactions are particularly useful for the separation of molecules that are very similar in structure (e.g. structural isomers.
Tags: English, Product Notes
This technical note includes), specifics on the use of ISOLUTE® PSA for the extraction of anionic
analytes from aqueous samples (page 1-2), ordering information (page 3) and a general discussion
on anion exchangers (pages 4-5). For information on extraction of anionic analytes from nonaqueous
matrices, contact Argonaut Technologies.
Tags: English, Product Notes
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What is the maximum capacity of an SPE column?
The capacity of a sorbent is defined as the total mass of strongly retained analyte that can be retained by a given mass of the sorbent under optimum conditions.
For most sorbents, this can range from 1-5% by weight. 100 mg of sorbent might retain 1-5 mg of analyte.
Ion exchange sorbents typically have a capacity of 0.3-1 meq/g.Browse more questions and answers >
|Part No.||Description||Product type||Pack Size||Price|
|480-0020-B||ISOLUTE® PSA 200 mg/3 mL||Consumables||50||Log in for price|
|480-0050-B||ISOLUTE® PSA 500 mg/3 mL||Consumables||50||Log in for price|
||480-0050-C||ISOLUTE® PSA 500 mg/6 mL||Consumables||30||Log in for price|
||480-0100-C||ISOLUTE® PSA 1 g/6 mL||Consumables||30||Log in for price|
||9480-0100||ISOLUTE® PSA Bulk 100 g||Consumables||1||Log in for price|