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V. M. Ivanov, E. V. Antonova

Sorption-fluorimetric determination of zinc


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).
Moscow University Chemistry Bulletin.
2010, Vol. 51, No. 4, P. 307

Copyright (C) Chemistry Dept., Moscow State University, 2002
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