摘要
本文研究了在酸性介质中痕量钒（Ⅴ）催化氯殴钾氧化变色酸及抗坏血醚体系的反应和动力学条件，建立了催化动力学光度法测定痕量钒（Ⅴ）的新方法。该方法的检出限为０．０８ｎｇ／ｍＬＶ（Ⅴ），线性范围为０～０．３μｇ／２５ｍＬＶ（Ⅴ）。将该方法用于水样及人发中痕量钒（Ⅴ）测定，结果令人满意。
n this paper,a new catalytic spectrophotometricmethod for determining trace vanadium(Ⅴ)is pro-posed.The method is based on the catalytic effect ofV(Ⅴ)on the oxidation of chromotropic acid andascorbic acid by potassium chlorate in HCl-KCl buffersolution,The optimum conditions for determination ofV(Ⅴ)are established,The.limit of detection is 0.08ng/mL of V( Ⅴ ).The linear range is 0～0. 3μg/25mL of V(Ⅴ).The method has been used to determine trace V(Ⅴ)in water and human hair with satis-factory results.
出处
《分析试验室》
CAS
CSCD
北大核心
1994年第3期38-40,共3页
Chinese Journal of Analysis Laboratory
关键词
催化光度法
钒
测定
氯酸钾
变色酸
Catalyic spectrophotometric method
trace vanadium(Ⅴ)determination
potassium chlo-rate
chromotropic acid
ascorbic acid
