Tube Supelclean PSA SPE, poids du lit: 200 mg, volume : 3 mL, lot de 54

Code: 52578-u D2-231

Non disponible en dehors du Royaume-Uni et de l'Irlande

General description

Retention Mechanism: Normal-phase and anion-exchangeSample Matrix Compatibility: Organic or aqueous solutions Polymerica...


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Non disponible en dehors du Royaume-Uni et de l'Irlande

General description

Retention Mechanism: Normal-phase and anion-exchangeSample 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

Legal Information

Supelclean is a trademark of Sigma-Aldrich Co. LLC

application(s)food and beverages
capacity0.98-1.05 meq/g capacity
compositionbed wt., 200 mg
extent of labeling8.4% C loading, 3.3% N loading
materialpolypropylene hardware, PE frit (20 µm porosity)
matrix active groupethylenediamine-N-propy bonding, polymerically bonded
matrixsilica gel base material (irregularly shaped)
packagingpk of 54
particle size50 µm
pKa (1) 10.1, (2) 10.9
pore size70 Å pore size
product lineSupelclean
Quality Level100
separation techniquenormal phase, ion exchange
surface area500 m2/g
surface coveragesurface coverage 2.35 µmol/m2
technique(s)solid phase extraction (SPE): suitable
volume3 mL
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