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钛的催化极谱测定,曾有资料报道。笔者研究表明:在0.1M HCl、0.2M NH_4Ac底液中,钛(Ⅳ)在EDTA、N-亚硝基苯胲胺铵盐、溴酸钾的作用下,可产生稳定灵敏的极谱催化波,起始电位为-0.70V(vs.SCE)。钛的浓度在2.1×10~(-7)M～3.35×10~(-6)M范围内与催化电流呈线性关系(图1)。灵敏度较高,定量下限为13ng/ml。对浓度为0.16μg/ml的钛进行10次测定结果的变异系数为5.73%。选择性较高,
Catalytic polarographic determination of titanium, there have been data reported. The study shows that: Titanium (Ⅳ) in 0.1M HCl, 0.2M NH_4Ac bottom solution, EDTA, N-nitrosophenylammonium salt, potassium bromate, can produce stable and sensitive polarographic catalytic wave, from The start potential is -0.70V (vs.SCE). The concentration of titanium in the range of 2.1 × 10 ~ (-7) M ~ 3.35 × 10 ~ (-6) M was linear with the catalytic current (Figure 1). High sensitivity, lower limit of quantification of 13ng / ml. The coefficient of variation for 10 determinations of titanium at a concentration of 0.16 μg / ml was 5.73%. High selectivity,