摘要
在氨水介质中以氨三乙酸为活化剂,KBrO_3氧化萘酚绿B的反应受Mo(VI)的催化而加速,据此建立了催化光度法测量痕量钼的新方法;选择了影响反应速率的最佳条件,测定了反应的表观活化能;方法的检出限为1.6×10^(-9)g/mL,线性范围为0～0.24μg/mL.用于水和食品中痕量钼的测定,获得满意结果.
A Kinetic-spectrophotometric method for the determination of trace molybdenum was studied. The method is based on the molybdenum （VI） catalyzing the oxidation of Naphthol green B by potassium bromate in the medium of ammonia and using nitrilotriacetic acid as activator. The optimal reaction conditions and the apparent activation energy were determined. The detection limit was 1.6×10^-9g/ml and the linear range of method was 0-0.24μg/ml. This method has been used to determine trace Mo （VI） in water and human serum with satisfactory results.
出处
《临沂师范学院学报》
2009年第6期65-67,共3页
Journal of Linyi Teachers' College
关键词
动力学光度法
钼
萘酚绿B
溴酸钾
kinetic spectrophotometry
molybdenum
naphthol green B
potassium bromate
