〈钛(Ⅳ)-5-Br-PADAP——羟胺——氯乙酸〉体系混配络合物及其分析应用(“金属离子——2-吡啶偶氮染料——L”体系多元络合物研究之三)

Application of the Mixed Ligand Complex in the System of “Titanium (Ⅳ-5-Br-PADAP-Hydroxylamine-Chloroacetate”

摘要: 本文报导了<钛(Ⅳ)——5-Br-PADAP—羟胺—氯乙酸>体系混配络合物的显色反应,此体系有不同于多数金属离子同型络合物的萃取性质,利于在其他金属离子共存时测定钛。服从比尔定律的范围为0—25μg/25ml。摩尔吸光系数为7.24×10⁴。介绍了合金钢中低含量钛的测定方法。

Abstract: The mixed ligand complex in the system of "Titanium (Ⅳ)-5 -Br-PADAP-Hydroxylamine-Chloroacetate" is suitable for the spectrophotometric determination of low titanium.The deep blue complex has a maximun absorption at 585nm and the molar absorptivity of 7.24×10⁴.It is stable and can be kept unchanged at least one week after developing.The interference of coexist-ing ions and their diminution are studied. Beer's law is obeyed over the concentration range of 0-25μg titanium per 25 ml. A procedure for the determination of titanium in alloy sleels has developed.