摘要
pH4 5的酸度条件下 ,钒与鞣酸生成蓝色络合物。该体系λmax=6 2 0nm ,ε =3 30× 10 4 ,0～ 12 μg钒 /2 5mL符合比尔定律。该体系可用于钛铁矿中钒的测定 ,钛、铁的干扰可用沉淀分离法除去。
In acid medium(pH 4 5)V(Ⅴ)and tannin form a blue complex with λmax=620 mm and ε=3 30×10 4.For vanadium(Ⅴ)in the concentration range of 0～12 μg/25 ml,the Beer's law is conformed to.This method has been applied in determination of vanadium(Ⅴ)in ilmenite.The interferrence of iron(Ⅲ)and titanium(Ⅳ)can be eliminated by alkali deposition.
出处
《云南冶金》
2001年第5期51-52,共2页
Yunnan Metallurgy
