Calculation of the diffusion coefficient during the Pb(II)/Ag(I) ion exchange in a PbS thin-film sorbent

Authors
Umarova, NN Movchan, NI Yusupov, RA Sopin, VF
Citation
Nn. Umarova et al., Calculation of the diffusion coefficient during the Pb(II)/Ag(I) ion exchange in a PbS thin-film sorbent, RUSS J PH C, 74(9), 2000, pp. 1547-1549
Citations number
7
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY
ISSN journal
00360244 → ACNP
Volume
74
Issue
9
Year of publication
2000
Pages
1547 - 1549
Database
ISI
SICI code
0036-0244(200009)74:9<1547:COTDCD>2.0.ZU;2-V
Abstract
The kinetics of sorption of Ag(I) from aqueous solutions in a PbS thin film sorbent was studied by the X-ray fluorescence and atomic adsorption method s. The applicability of the Fick equation was demonstrated for the diffusio n from a constant-intensity source of Ag atoms, which was realized when the concentration of the solution was above 1 x 10(-3) mol/l. The diffusion co efficient for Ag(I) in the PbS him at room temperature was estimated at D = (1.9 +/- 0.15) x 10(-15) cm(2)/s.