研究了镓与4，5-二溴邻硝基苯基荧光酮（DBON-PF）的显色 反应，在盐酸—氯化钾介质中，有CTMAB存在下，显色反应灵敏，镓与 DBON-PF络合物的最大吸收波长在757nm，络合物的表观摩尔吸光 系数ε＝8.2×104。含镓0～5μg／25mL遵守比耳定律。用乙酸丁 酯萃取分离干扰元素，可以大大提高方法的选择性。该法用于矿石中微量镓的 测定，获得了满意的结果。
The colour reaction of gallium with 4, 5-dibromo-2-nitro-phenylfluorone(DBON-PF) was investigated. In the medium of HCl-KCl solution containing CTMAB the colour reaction is sensitive. The complex of Ga with DBON-PF has a maximum absorption at 575nm. The apparent molar absorptivity is 8.2 ×104 L*mol-1*cm-1. Be er's law is obeyed for 0-5μg gallium in 25mL solution. The interference of foreign ions was eliminated by extraction with n-butyl acetate. The method has been applied to the determination of trace gallium in ore with satisfactory results.
参考文献
| [1] | 徐弘;吴铮;胡昭圣.[J].华东师范大学学报(自然科学版),1996(04):56. |
| [2] | 刘艳如;周芳萍;胡昭圣 等.[J].化学试剂,1988,10(04):207. |
| [3] | 高峰,熊丽蓓,董庆伟.微波电路的计算机辅助设计[J].华东师范大学学报(自然科学版),1988(04):52. |
| [4] | 北京矿冶研究总院分析室.矿石及有色金属分析手册[M].北京:冶金工业出版社,1990 |
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