摘要
溴化二甲氨基苯基萤光酮 ( BDMAF)是一种新的萤光酮类显色剂 ,本文研究了在碱介质中有两种以上不同表面活性剂存在下 ,锡 ( IV)—溴化二甲氨基苯基萤光酮 ( BDMAF)—溴化十六烷基吡啶 ( CPB)—十二烷基硫酸钠( SDS)体系的高灵敏显色反应 .反应的适宜酸度为 p H=1 0 .0 - 1 1 .5 0 ,配合物的最大吸收峰在 5 6 0 nm,表观 ε值为 9.5× 1 0 5L·mol- 1·cm- 1.锡含量在 0 .45 μg/2 5 m L范围内服从比耳定律 ,研究了外加离子的干扰 。
It is reported in this paper that in the presence of CPB and SDS, tin (IV) reacts with BDMAF in alkaline solution to form a complex with its absorption maxima at 560nm , and molar absorptivity of 9.5×10 5 L·mol -1 ·cm -1 .Beer's law holds in the concentration range of0~4.5μg/25mL for tin(IV). The proposed method proves to be sensitive and selective, and has been applied to the determination of tin in steel samples with satisfactory results.
出处
《哈尔滨师范大学自然科学学报》
CAS
1999年第3期83-86,共4页
Natural Science Journal of Harbin Normal University
