4-氯苯基二安替比林甲烷分光光度法测定微量钒(Ⅴ)  

Spectrophotometric Determination of Trace Vanadium(Ⅴ) with 4-Chlorophenyl Diantipyryl Methane

作　　者：刘家琴[1] 徐其亨[1] 匡云艳[2] 

机构地区：[1]四川省绵阳师专化学系,绵阳621000 [2]云南大学化学系,昆明650091

出　　处：《冶金分析》1999年第5期35-36,共2页Metallurgical Analysis

摘　　要：在Ｈ_３ＰＯ_４介质中，有吐温-２０和Ｍｎ（Ⅱ）存在下，４-氯苯基二安替比林甲烷（ＤＡｐＣＭ）与Ｖ（Ｖ）生成橙黄色产物，其λｍａｘ为４８５ｎｍ，ε＝５.０５×１０~５Ｌ·ｍｏｌ^(－１)·ｃｍ^(－１)。钒量在０．５～３.５μｇ／２５ｍＬ符合比尔定律。该法具有较高的灵敏度和较好的选择性，用于低合金钢样中微量钒的测定，结果满意。In the presence of Tween-20 and manganese(Ⅱ), 4-chiorophenyl diantipyryl methane (DApCM) reacts with V(Ⅴ)to form an orange-yellow product in the medium of phosphoric acid. The maximum absorbance of the product is at 485 nm with molar absorptivity 5.05×10~5L·mol^(-1)·cm^(-1). Beer's law is obeyed over the range of 0.5- 3.5μgV(Ⅴ)/25mL. The method is highly sensitive and good selective. Some low-alloy steel have been analyzed by this method with satisfactory results.

关 键 词：氯苯基 二安替比林甲烷 分光光度法 钒 测定 

分 类 号：O614.511[理学—无机化学]