节点文献
新试剂N-烯丙基-N~/-安替比林基硫脲光度法测定矿样中微量金
Spectrophotometric Determination of Au(III) with N-allyl-N~/-antipyryl Thiourea(AATu)
【摘要】 研究了新试剂N-烯丙基-N/-安替比林基硫脲与Au(III)的显色反应。结果表明在pH=3.8~4.4的HAc-NaAc缓冲体系中,Au(III)与该试剂形成1∶2的络合物,其最大吸收峰位于275.0nm,表观摩尔吸光系数ε275.0=2.39×104Lˇmol-1ˇcm-1,Au(III)含量在0~24.0μg/25mL内服从比尔定律。方法操作简便,选择性高。用于金矿石中微量金的测定,结果令人满意。
【Abstract】 The coloration reaction of Au(III) and AATu was studied in the present paper.It was found that under conditions of pH = 4.0 HAc-NaAc buffer solution,a stable complex is formed,the maximum absorbance appears at 275.0nm and its apparent molar absorptivity is 2.39×104 L?mol-1?cm-1,Beer’s law is obeyed in the range of 0~24.0μg/25mL Au(III).The new reagent AATu has been applied to determine gold(III) in the ores with agreeable results.
【关键词】 分析化学;
N-烯丙基-N~/-安替比林基硫脲;
金(III);
分光光度法;
【Key words】 Analytic chemistry; N-allyl-N/-antipyryl thiourea(AATu); Gold(III); Spectrophotometry;
【Key words】 Analytic chemistry; N-allyl-N/-antipyryl thiourea(AATu); Gold(III); Spectrophotometry;
【基金】 新乡市科技局科技攻关(04G075);河南科技学院科技攻关资助项目
- 【文献出处】 贵金属 ,Precious Metals , 编辑部邮箱 ,2006年01期
- 【分类号】P575.3
- 【被引频次】9
- 【下载频次】65