钛－苯甲酰苯基羟胺络合吸附波

Adsorptive Complex Wave of Titanium-Benzoylphenylhydroxyamine

在醋酸－醋酸钠缓冲溶液中，钛与苯甲酰苯基羟胺形成的络合物，在示波极谱仪上产生－灵敏的吸附波，导数峰电位Ｅ＿ｐ＝－０．８３Ｖ（ｖｓ．ＳＣＥ），检出限０．１μｇ／Ｌ，线性范围０～５μｇ／Ｌ．选择性较好，本法已用于测定高铝水泥标样中的钛。

A sensitive adsorpive complex wave of Ti(w)with E_p=-0. 83 V(vs,SCE) has been ob-tained by using oscillopolarograghy in 0.05 mol/LHAc-NaAc buffer solution(pH=4.5 ) con-taining 4 ×1 0￣(-4)mol/L benzoylphenylhydr-oxyamine(BPHA).The detection Iimit is 0.1μg/ L(2×10￣(-9)mol/L).Under optimum condi-tions ,the peak height is proportional to the con-centration of Ti(Ⅳ)over the range of 0～5μg/L. The method has high sensitivity , good repro-ducibility and selectivity. It has been applied tothe determination of Ti in cement.