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DETERMINATION OF THE DIFFUSION COEFFICIENTS FOR TERNARY SYSTEMS BY GOSTING DIFFUSIOMETER. APPARATUS AND METHOD

D. Buzatu1,* , E. Petrescu1, C. Popa1, F. D. Buzatu2

Affiliation

  1. Physics Department, “Politehnica” University, Bucharest, 77206, Romania
  2. Department of Theoretical Physics, National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, 76900, Romania

Abstract

In this paper we describe the Gosting interferometric optical diffusiometer operating in Rayleigh mode and the theoretical approach about diffusion applied to ternary lysozyme Na2SO4-water system. Gosting diffusiometer is a unique instrument which was designed and constructed for diffusion measurements in multicomponent liquid systems, with particular interest in aqueous protein system, and located in Texas Christian University, Department of Chemistry. The experimental analysis work for ternary lysozyme-Na2SO4 water system at pH = 4.5 and T = 25 oC, including the baseline scans, boundary sharpening, fractional part of fringe scans, diffusion scans and data analysis are also presented..

Keywords

Gosting diffusiometer, Rayleigh interferometric method, Data analysis for lysozyme-Na2SO4-water.

Submitted at: Dec. 7, 2004
Accepted at: March 23, 2005

Citation

D. Buzatu, E. Petrescu, C. Popa, F. D. Buzatu, DETERMINATION OF THE DIFFUSION COEFFICIENTS FOR TERNARY SYSTEMS BY GOSTING DIFFUSIOMETER. APPARATUS AND METHOD, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 2, pp. 1079-1090 (2005)