الفهرس 
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Abstract
I’he p resent thes i s comprises t he followi ng parts .
An introducti on which ’ ”elate!; the diffe rent components
o f t he wo r k to a c l ear aim . Tliis aim is to elabo rate
a p roced uro for t he successivo deter. i nation of ga l lium .
i nd ium and thllllium In II mixture of tho t.nree ana l yt..,s .
The I iterature collection o f t he spec t r ometric
de t e rmi nation of t he t hree ilnal yt es ind i ell tes thll t such
procedures IIre , in gene ral. JrH..”OnIparably s uper i o r to all
e he.ica l p rocedurea fo r the de t ect i on and dete rmination
of the i ndividuill ana l yLe in iI VatHtL y of matri ces .
Event ual l y. no compre hensive procedure has been elaborat ed
t o determine 011 the three ana l ytes in a mixture wi thout
using separat i on techni ques.
In the saMe con t ext . severa l very s uccess fu l li t t empts
have been .. ade Lo predict the cond i tions f or c arrying
out an,.lytiClIi cOlllp i exoIII(!tric determinati o ns of the
t hree a na .l ytes. Such attempts having s ho”l11 that the
possibility of direct comp le xomet r ic titration i s de t ermined
by the value o f the st,.bi I ity constant of t he
corresponding compl ex . Lho i n itial co ncent rati o n of the
r ea gents . t he pll •.. . etc. Howe-ver . on ly a comparat ive l y
sIMll number o f papers dea l wilh the quantitative approach
to the de t o rmi nation o f two of the three analytes.