Description
Supelclean™ PSA SPE Bulk Packing
pkg of 100 g
Properties
| feature | endcapped |
| packaging | pkg of 100 g |
| extent of labeling | 8.4% C |
| - | 3.3% N loading |
| surface coverage | surface coverage 2.35 μmol/m2 |
| matrix | silica gel base material (irregularly shaped) |
| matrix active group | ethylenediamine-N-propy bonding |
| particle size | 50 μm |
| pore size | 70 pore size |
| surface area | 500 m2/g |
| pKa | (1) 10.1, (2) 10.9 |
| capacity | 0.98-1.05 meq/g capacity |
| mode of chromatography | ion exchange |
| - | normal phase |
General description
Retention Mechanism: Normal-phase and anion-exchange
Sample Matrix Compatibility: Organic or aqueous solutions
• Polymerically bonded, ethylenediamine-N-propyl phase that contains both primary and secondary amines
• A weak anion exchanger with a pKa of 10.1 and 10.9
• Similar to aminopropyl SPE phases (NH2) in terms of selectivity, but has a much higher capacity due to presence of secondary amine (0.98-1.05 meq/g)
• Strong affinity and high capacity for removing fatty acids, organic acids, and some polar pigments and sugars when conducting multi-residue pesticide analysis in foods
• Has been shown to significantly reduce matrix-enhancement effects encountered during the GC analysis of food products
• Tested for superior cleanliness using GC-FID and GC-MS
• Bidentate nature of ligand allows for chelation
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