|
M. A. Statkus, K. B. Emelyanov, G. I. Tsysin
Interference
of anions in on-line sorption-ion chromatography determination
Abstract
A technique for investigation of interference of anions in
on-line sorption-ion chromatography determination was proposed. This technique
includes the choice of mathematical model for describing the sorption dynamics,
calculation of thermodynamic and kinetic properties of ion sorption in the
given system, plotting of sorption isotherms of microcomponent in a wide range
of concentrations of interfering macrocomponents. This technique was used for
investigation of sorption of nitrate in presence of sulphate and hydrocarbonate
ions. It was shown that nitrate sorption dynamics is adequately described by
model of external diffusion. The data obtained were used for forecast of
dependence of recovery levels of nitrate on volume of sample containing sulphate ions. The accuracy of the forecast
was proved experimentally.
Copyright (C) Chemistry Dept., Moscow State University, 2002
|
|
