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Wan Zhen, Yang Sunkai, Huang Huiliang. STUDIES ON CATALYTIC CURRENT OF TITANIUM(Ⅳ)IN POLAROGRAPHY-DETERMINATION OF TRACE AMOUNTS OF TITANIUM IN NATURAL WATERS[J]. Haiyang Xuebao, 1982, 4(2): 183-190.
Citation:
Wan Zhen, Yang Sunkai, Huang Huiliang. STUDIES ON CATALYTIC CURRENT OF TITANIUM(Ⅳ)IN POLAROGRAPHY-DETERMINATION OF TRACE AMOUNTS OF TITANIUM IN NATURAL WATERS[J]. Haiyang Xuebao, 1982, 4(2): 183-190.
Wan Zhen, Yang Sunkai, Huang Huiliang. STUDIES ON CATALYTIC CURRENT OF TITANIUM(Ⅳ)IN POLAROGRAPHY-DETERMINATION OF TRACE AMOUNTS OF TITANIUM IN NATURAL WATERS[J]. Haiyang Xuebao, 1982, 4(2): 183-190.
Citation:
Wan Zhen, Yang Sunkai, Huang Huiliang. STUDIES ON CATALYTIC CURRENT OF TITANIUM(Ⅳ)IN POLAROGRAPHY-DETERMINATION OF TRACE AMOUNTS OF TITANIUM IN NATURAL WATERS[J]. Haiyang Xuebao, 1982, 4(2): 183-190.
The polarographie behavior of the titanium(Ⅳ)-amygdalic acid-chlorate systetm has been stutdied.In 0.02M amygdalic acid 4% chlorate medium titanium(Ⅳ)gives a simple kinetioally controlled wave with Ep at -0.89 V vs.the S.C.E.The titanium wave is pargicu.Iarly interesting,because of its catalytic nature.As happens with mther complexing and oxidizing agents,the titanium(Ⅲ)formed at the dropping mercury electrode is oxidized back to titanium(Ⅳ).The resulting catalytic current depende on the rate of this subsequent oxidation.The titanium current allows the determination of titanium at concentrations as low as 10-9g/ml,Cu(Ⅱ),Pb(Ⅱ),Mn(Ⅱ),Cr(Ⅲ),Zn(Ⅱ)1000-fold and Mo(VI),V(Ⅴ)100-fold excess does not interfere.This method is suitable for the determination of trace amounts of titanium in natural waters(sea water,estuarine water,well water,etc.).
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