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小沢敏夫曾将(口底)唑(STA)用于钛的光度测定。虽灵敏度较高,但显色条件很严,且钒的干扰很难排除。本文以抗坏血酸和对氯苦杏仁酸作辅助配位体,使形成的络合物由文献[1]的L_(max)520nm移至540nm当非离子表面活性剂OP存在时,共入_(max)移至526nm,‘=1.05×10~5。由于辅助配位体对氯苦杏仁酸的存在,抑制了钛离子的水解聚合,改善了实验条件。本文在pH5.5～6.5的乙酸—乙酸钠缓冲液介质中显色吸光
Minami Mitake once (mouth bottom) azole (STA) for titanium photometry. Although the sensitivity is high, but the color condition is very strict, and the interference of vanadium is difficult to rule out. In this paper, ascorbic acid and p-chloro-mandelic acid as auxiliary ligands, the complex formed by literature [1] 520nm shift to 540nm when the non-ionic surfactant OP exists, the co-incorporation of ) To 526 nm, ’= 1.05 × 10 ~ 5. Due to the presence of the auxiliary ligand for chiral mandelic acid, the hydrolytic polymerization of titanium ions is inhibited and the experimental conditions are improved. In this paper, pH5.5 ~ 6.5 acetic acid - sodium acetate buffer medium color absorption