Al-Ti-B合金中痕量钒的示波极谱法测定  

Determination of trace vanadium in Al-Ti-B alloy by oscillopolarography

作　　者：李蓉[1] 

机构地区：[1]昆明冶金研究院,云南昆明650031

出　　处：《冶金分析》2003年第1期37-38,29,共3页Metallurgical Analysis

摘　　要：研究了用酸分解合金样 ,少量Mn -Fe共沉淀分离Ti,一定量的Al用KF掩蔽 ,在pH4 5乙酸 -乙酸钠缓冲溶液中 ,钒与铜铁试剂生成的络合物 ,在导数示波极谱上有一个灵敏的络合物吸附波 ,峰电位在 -0 8V (vs SCE)峰高与钒质量浓度在 0 0 0 2～ 1μg/mL范围内呈线性关系。检出限 0 0 0 1μg/mL。A method for the determination of trace vanadium in Al-Ti-B alloy was studied. Samples were decomposed with dilute HCl,titanium could be separated by coprecipitation with small amounts of Mn 2+ and Fe 3+ and meanwhile a certain amount of aluminium was masked by KF.In the buffer solution of HAc-NaAc(pH4.5) a complex adsorptive wave of vanadium cupferron appeared at -0.8V(vs.SCE).The linear relationship was in the concentration range of 0.002-1.0μg/mL for vanadium,the detection limit was 0.001μg/mL.

关 键 词：AL-TI-B合金 钒 示波极谱法 测定 

分 类 号：TG115.3[金属学及工艺—物理冶金]