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.
出处
《冶金分析》
CAS
CSCD
北大核心
1999年第5期35-36,共2页
Metallurgical Analysis
关键词
氯苯基
二安替比林甲烷
分光光度法
钒
测定
4-Chiorophenyl diantipyryl methane, Spectrophotometry, Vanadium(Ⅴ)
