钛(Ⅳ)—3,5-二溴-PADAP—盐酸羟胺—氯乙酸体系光度法测定钢中钛

Spoctrophotometric Determination of Titanium ( IV ) in Iron and Steel with 3, 5-Dibromo-PADAP, Hydroxylamine and Chloroacetate

用钛(Ⅳ)—3,5-二澳-PADAP—盐酸羟胺—氯乙酸体系测定钛,配合物的最大吸收为598nm,ε=8.41×10~4,钛量在0～18μg/25ml范围内符合比尔定律,本法适用于不含锆、钴的高低合金钢。

In the presence of NH2 OH and chloroecetate, titanium ( IV ) forms a color complex with 3, 5-dib/omo-PADAP. The composition ratio of Ti ( IV ) : NH2OH:C1CHCOOH : 3, 5-dibromo-PADAP= i:1:1. The eomplexs has a sharp absorption peak at 598nm, and its molar absorptivity is found to be 8.14X104. Beerfs law is obeyed in the range 0-18ng/25ml for Ti ( IV ) . The interference of coexisting ions aud their diminution are studied. A procedure for the determination of titanium in alloy steel has developed.