caa a22 4500 467995540 CHVBK 20180323112556.0 cr unu---uuuuu 170328e19900101xx s 000 0 eng 10.1007/BF01244287 doi (NATIONALLICENCE)springer-10.1007/BF01244287 The retention equation in reversed-phase ion-pair chromatography [Elektronische Daten] [Peichang Lu, Hanfa Zou, Yukui Zhang] In this paper, by combination of the statistical thermodynamic method with the Freundlich isotherm, the retention equations to describe the effects of the mobile phase composition, concentration of the ion-pair reagent and the ionic strength on the amount of adsorbed ion-pair reagent and the retention value of the ionic solute have been reported by simultaneously considering the electrostatic and molecular interaction between solutes, ion-pair reagent and molecule or ion in each phase in the reversed-phase ion-pair chromatography. The validity of these retention equations has been confirmed by calculation of capacity factor of the different phenylamine and naphthylamine sulphonic acids during systematic change of concentration of the strong solvent, the ion-pair reagent and the ionic strength in the mobile phase. Springer-Verlag, 1990 ion-pair chromatography nationallicence Freundlich isotherm nationallicence retention equation nationallicence statistical thermodynamic method nationallicence a, b, c, d, d 1, e, f, h, g and a′, b′, c′, d′, e′, f∼', g′, h′ : parameters related to chromatographic system nationallicence A : solute nationallicence B : constant nationallicence B i : solventi nationallicence C b and C p : concentration of strong solvent and ion-pair reagent nationallicence C P a : amount of adsorbed ion-pair reagent nationallicence D : dielectric constant nationallicence E AP ,$$E_{AB_i } ,E_{PB_i }$$ and E pp : molecular interaction of adjacent pair of solute-ion-pair reagent, solute-solventB i , ion-pair reagent-solventB i and ion-pair reagent-ion-pair reagent nationallicence E p a and E e a : non-electrostatic and electrostatic adsorption energy of ion-pair reagent nationallicence F : Faraday constant nationallicence h : Planck constant nationallicence I : ionic strength nationallicence j A ,$$j_{B_i }$$ and j p : internal partition function of solute, solventB i and ion-pair reagent nationallicence k : Boltzmann constant nationallicence k′ : capacity factor nationallicence k p , n p and k 1, n 1 : parameters of Freundlich isotherm of ion-pair reagent and solventB 1 nationallicence K AP ,$$K_{AB_i }$$ and$$K_{PB_i }$$ : constants related with the molecular size of solute, ion-pair reagent and solventB i nationallicence m A , m P and$$m_{B_i }$$ : molecular weight of solute, ion-pair reagent and solventB i nationallicence N A , N P and$$N_{B_i }$$ : numbers of solute, ion-pair reagent and solventB i in solution nationallicence N A a , N P a and$$N_{_{B_i } }^a$$ : numbers of solute, ion-pair reagent and solventB i adsorbed on the surface nationallicence N s : number of adsorbed sites on the surface nationallicence P : ion-pair reagent nationallicence R : gas constant nationallicence T : absolute temperature nationallicence V 0 : volume of solution nationallicence V p and$$V_{B_i }$$ : volume of ion-pair reagent and solventB nationallicence X : potential function nationallicence X P 1 and X P l : potential function of ion-pair reagent on the surface and in the solution nationallicence X A a and X A l : potential function of solute on the surface and in the solution nationallicence Z A , Z P and Z i : charge numbers of soluteA, ion-pair reagent and inorganic ioni nationallicence Z AP and$$Z_{AB_i }$$ : numbers of ion-pair reagentP and solventB i surrounding the soluteA nationallicence ɛ 0 : permittivity in a vacuum nationallicence ϕ : electrostatic potential of the surface nationallicence Lu Peichang Dalian Chromatographic R. & D. Center of China, Dalian Institute of Chemical Physics, Academia Sinica, Liaoning, People's Republic of China aut Zou Hanfa Dalian Chromatographic R. & D. Center of China, Dalian Institute of Chemical Physics, Academia Sinica, Liaoning, People's Republic of China aut Zhang Yukui Dalian Chromatographic R. & D. Center of China, Dalian Institute of Chemical Physics, Academia Sinica, Liaoning, People's Republic of China aut Microchimica Acta Springer-Verlag 102/1-3(1990-01-01), 35-53 0026-3672 102:1-3<35 1990 102 604 https://doi.org/10.1007/BF01244287 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01244287 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lu Peichang Dalian Chromatographic R. & D. Center of China, Dalian Institute of Chemical Physics, Academia Sinica, Liaoning, People's Republic of China aut NATIONALLICENCE 700 1- Zou Hanfa Dalian Chromatographic R. & D. Center of China, Dalian Institute of Chemical Physics, Academia Sinica, Liaoning, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Yukui Dalian Chromatographic R. & D. Center of China, Dalian Institute of Chemical Physics, Academia Sinica, Liaoning, People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer-Verlag 102/1-3(1990-01-01), 35-53 0026-3672 102:1-3<35 1990 102 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer