摘要
报道了新试剂8-氨基喹啉-5-偶氮-对苯甲酸(AQBA)的合成及分析应用。在阳离子表面活性剂CTMAB存在下,Au(Ⅲ)与AQBA在碱性介质中反应形成蓝绿色配合物,其最大吸收波长在608nm处,表观摩尔吸光系数为9.11×10~4L·mol^(-1)·cm(-1),Au量在0～1.8μg/ml范围内遵守比尔定律。所建立的新分析方法已应用于测定矿石及阳极泥中的痕量Au,结果满意。
8-Aminoquinoline-5-azo-p-benzonic acid (AQBA) was synthesized. AQBA was used as a new analytical reagent for the spectrophotometric determination of gold (III) in aqueous solution. In alkaline solution, AQBA reacts with gold(III) in the presence of cetyltrimethyl ammonium bromide to form a complex with a molar absorptivity of 9.11 × 104 L-mor-1cm-1 at 608 nm.Beei's law is obeyed in the range of 0-1.8 μg/ml gold.The interference of 32 ions has been studied and the method has been applied to the deteimination of trace gold in ores and anode slimes with satisfactory results.
出处
《岩矿测试》
CAS
CSCD
北大核心
1992年第3期207-210,共4页
Rock and Mineral Analysis
基金
云南省自然科学基金资助项目。
关键词
金
比色法
苯甲酸
氨基喹啉
gold determination, 8-aminoquinoline-5-azo-p-benzonic acid, spectrophotometry
