摘要
研究了钒与3,5 Br2 PADAP及H2O2的显色反应、共存组分对测定钒的影响,探讨了钒的氧化机理,将正交试验法应用于显色条件的选择。在磷酸介质中,Ⅴ -3,5 Br2 PADAP-H2O2三元络合物的组成比为金属∶试剂∶H2O2=1:1:1,λmax=600nm,表观摩尔吸光系数5 7×104,在25mL溶液中0～25μg钒符合比尔定律。方法用于钢中钒的相分析,测定结果令人满意。
The color reaction of vanadium with 3,5Br2PADAP and H2O2 has been studiedThe optimum conditions were selected by orthogonal design The influences of other metal ions were examined. The oxidation principle has been probedIn the medium of H3PO4, the ratio of metal:reagent:H2O2 in the complex is 1:1:1. The complex has a maximum absorption at wavelength of 600nm, and its apparent molar absorptivity is 57×104L·mol-1·cm-1Beer's law is obeyed in the concentration range of 0-25μg/25mL for vanadiumThis method has been applied to phase analysis of vanadium in steel with satisfactory results
出处
《冶金分析》
CAS
CSCD
北大核心
2003年第3期43-44,42,共3页
Metallurgical Analysis
