title: A fast, convenient and rugged procedure for characterizing the selectivity of alkyl-silica columns.
abstract: Previous work has shown that the selectivity of reversed-phase columns for HPLC can be described by means of five column parameters: H (hydrophobicity), S* (steric resistance), A (hydrogen-bond acidity), B (hydrogen-bond basicity) and C (cation-exchange capacity). Values of H, S*, etc. can be determined by carrying out retention measurements for 18 test solutes under standardized conditions. The reproducibility of the latter procedure has been evaluated by comparison testing in four different laboratories and found acceptable. An alternative 10-solute test procedure which is more reproducible and convenient (but somewhat less accurate), requires only 2-3 h per column.
authors.affiliation: LC Resources Inc, Orinda, CA 94563, USA. snyder0036@comcast.net
authors.forename: L R
authors.initials: LR
authors.lastname: Snyder
authors.forename: A
authors.initials: A
authors.lastname: Maule
authors.forename: A
authors.initials: A
authors.lastname: Heebsh
authors.forename: R
authors.initials: R
authors.lastname: Cuellar
authors.forename: S
authors.initials: S
authors.lastname: Paulson
authors.forename: J
authors.initials: J
authors.lastname: Carrano
authors.forename: L
authors.initials: L
authors.lastname: Wrisley
authors.forename: C C
authors.initials: CC
authors.lastname: Chan
authors.forename: N
authors.initials: N
authors.lastname: Pearson
authors.forename: J W
authors.initials: JW
authors.lastname: Dolan
authors.forename: J J
authors.initials: JJ
authors.lastname: Gilroy
mesh_terms: D002411:Cation Exchange Resins; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation / Q000379:methods; D006860:Hydrogen Bonding; D012680:Sensitivity and Specificity; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D002411:Cation Exchange Resins; D012822:Silicon Dioxide