Croatica Chemica Acta, Vol. 44 No. 4, 1972.
Original scientific paper
Investigations of Tll Suspensions
R. Despotović
; »Ruder Boskovic« Institute, 41000 Zagreb, Croatia, Yugoslavia
Z. Grabarić
; »Ruder Boskovic« Institute, 41000 Zagreb, Croatia, Yugoslavia
M. Hus
; »Ruder Boskovic« Institute, 41000 Zagreb, Croatia, Yugoslavia
V. Kovač
; »Ruder Boskovic« Institute, 41000 Zagreb, Croatia, Yugoslavia
Abstract
Thallous iodide suspensions were obtained by direct mixing
of TlN03 and Na! solutions. The amount of TH was kept constant
in the systems, while the concentrations of Na! (in excess), laurylamine
nitrate (LAN) or myristylamine nitrate (MAN) were varied.
Tyndallometric values were recorded as the function of Na!, LAN,
and MAN concentrations respectively, for suspensions aged for
various times. Particle sizes of differently aged TH in 'Suspensions
containing Na! and Eu(N03)a in solution were determined. Tyndal.:.
lometry and electronmicroscopy showed fast particle growth of
TH in suspension. After about 10 minutes the TH particle grew up
to 1.3 μ. The zero point of charge, determined by microelectrophoresis,
was attained at 0.001-0.005 M Na! and 0.0001-0.0005 M
LAN depending on the conditions under which the system had
been prepared. The results of radiometrically recorded adsorption-
desorption equilibria show a constant increase of the adsorption
capacity as the electrolyte concentration increases.
Keywords
Hrčak ID:
197194
URI
Publication date:
20.3.1973.
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