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V. M. Ivanov, E. V. Antonova
Sorption-fluorimetric
determination of zinc
Abstract
Is investigated
sorption of ions of zinc on carriers modified 8-oxychinoline and its
derivative. The optimum parameters sorption are revealed, on the basis of which
is chosen silochrome S - 60 with immobilized 8-oxychinoline (pH
7,1, time of contact 30 mines, weight sorbent 0,3 g, capacity sorbent on the modifier 60 mcm/g). At an irradiation by ultra-violet light in a phase
sorbent arises yellow - green fluorescence sorbate. The spectrum fluorescence
represents a wide unstructured strip with a maximum at 505 nm. In conditions of
construction plot of the diagram definition 5– 50 mcg of zinc do not
prevent Cu(II), Cd(II), Pb (II), Bi(III), Fe(III); the equal amounts Al(III)
(50-100 mcg) prevent. The technique is applied for sorption-fluorimetric of
determination of zinc in river and waste water. The relative standard deviation does not exceed 0.05 (n = 5).
Copyright (C) Chemistry Dept., Moscow State University, 2002
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