催化动力学示波极谱法测定铬铁中微量钒  

Catalytic kinetic oscillopolarographic determination of micro amounts of vanadium in ferrochromium

作　　者：朱樱 

机构地区：[1]核工业西南地质局280研究所,四川广汉618300

出　　处：《冶金分析》2004年第1期53-54,57,共3页Metallurgical Analysis

摘　　要：用催化动力学示波极谱法测定铬铁中微量钒。试验了铬的干扰情况 ,建立了优化的H2 SO4 -苯羟乙酸 -KClO3底液测定条件 ,采用在标准溶液中加入与样品相当量的干扰元素的方法补偿基体的干扰。Ep≈ -0 96V ,在 2 5mL溶液中钒的线性范围为 0 10～ 2 0 0 μg。检出限为 3 99× 10 - 3μg/mL。用于铬铁中微量钒的测定 ,结果满意。A method for the determination of micro amounts of vanadium in ferrochromium was presented.The influence of chromium was investigated.The system of H_2SO_4-amygdalic acid-KClO_3 as base solution was optimized. In order to correct the influence caused by background of chromium, which (the amount was as much as that in the sample) could be added into those standand solution prepared to constitute the calibration curve.E_p≈-0.96V.A linear relationship was in the range of 0.10～20μg per 25mL for vanadium is found.The detection limit is 3.99×10^(-3)μg/mL.The present method has been used in the determination of vanadium in ferrochromium.

关 键 词：铬铁 钒 催化动力学 示波极谱法 测定 

分 类 号：TG115[金属学及工艺—物理冶金]