二安替比林-(o-羟基)苯基甲烷分光光度法测定钒  

Spectrophotometric determination of vanadium with diantipyryl-(o-hydroxy)phyenylmethane

作　　者：阮琼[1] 李碧玉[1] 白世发[1] 张本勇[1] 

机构地区：[1]云南师范大学化学化工学院,云南昆明650092

出　　处：《冶金分析》2005年第3期73-75,共3页Metallurgical Analysis

摘　　要：以正交试验设计法研究在Mn(Ⅱ)和Tween-60存在下,二安替比林-(o-羟基)苯基甲烷(DAOHM)分光光度法测定痕量钒的最佳显色条件,最大吸收波长λmax＝480 nm,表观摩尔吸光系数ε＝9.96×105;在25 mL溶液中,钒质量在0～4.5 μg范围内符合比尔定律.该体系选择性好,稳定时间长,应用于某些矿石和钢样中微量钒的测定,结果满意.The optimum conditions of color reaction of diantipyryl-(o-hydroxy) phenylmethane (DAOHM) with trace V(V) were studied with orthogonal design in the presence of Tween-60 and Mn(II). The maximum absorbance of the complex is at 480 nm. The apparent molar absorptivity is 9.96 × 105 L · mol-1 · cm-1. Beer's law is obeyed in the range of 0-4.5 μg/25 mL. The method was applied to the determination of trace V(V) in the samples of ores and steel with satisfactory results.

关 键 词：正交试验 二安替比林-(o-羟基)苯基甲烷 分光光度法 钒(Ⅴ) 

分 类 号：O657.32[理学—分析化学]