摘要
基于在硫酸介质中,钒(V)对溴酸钾-过氧化氢氧化四(间氯对磺酸基苯基)卟啉(简称m-CITPPS_4)褪色有阻抑作用,建立了一种测定痕量钒(V)的新方法,灵敏度为5∶0×10^(-8)g·L^(-1),钒(V)的浓度在0～0.02mg·L^(-1)范围内遵守Beer定律.用于低合金钢和碳钢标样中痕量钒的测定,结果令人满意.
A new catalytic spectrophotometric analysis method is proposed on the basis of the retarding ac- tion of Vanadium (V) to oxydation decolourization of meso-tetra (m-chloro-sulfonatophemyl) por- phyrin by Potassium bromate-hydrogen peroxide in the medium of sulfurin acid. The sensitivity of the method is 5×10^(-8)g·L^(-1). Beer law obeyed in the range of concentration of Vanadium (V) from 0 to 0.02mg·L^(-1). The method is applicable to the determination of trace amount of Vanadium of standard sample of carbon steel and low alloyed steel. Results obtained are satisfactory.
出处
《武汉大学学报（自然科学版）》
CSCD
1993年第1期57-60,共4页
Journal of Wuhan University(Natural Science Edition)
关键词
钒
阻抑作用
m-C1TPPS4
vanadium
retardation action
catalytic spectrophotometric analysis
