树脂悬浮光度法测定地质样品中微量金  

DETERMINATION OF TRACE GOLD IN GEOLOGICAL SAMPLES BY RESIN SUSPENSION SPECTROPHOTOMETRY

作　　者：刘春英[1] 周蓓蕾[1] 陈华章[1] 陈维权 

机构地区：[1]广东工业大学,广州510651

出　　处：《广东有色金属学报》1997年第1期71-74,共4页Journal of Guangdong Non-Ferrous Metals

摘　　要：在pH4．7的HAc-NaAc缓冲液中，在表面活性剂吐温—80存在下，金与硫代米氏酮形成的配合物能被树脂富集并悬浮于甘油相中，用光度法测得该体系的最大吸收波长为551nm，方法灵敏度高，金在0～6μg／10ml范围内符合比尔定律．将树脂悬浮光度法应用于矿石中微量金的测定，结果较满意．With the medium of HAc-NaAc (pH= 4. 7) in the presence of cationicsurfactant Tween-80, the complex formed by gold and TMK can be concentrated by resinand suspended in glycerol. The maximum absorption wavelength is at 551nm; the sensitivityis high and the Beer's law is obeyed in the range of 0～6μg of Au in 10mL of the solution.The method of resin suspension spectrophotometry is used to determine trace gold in ores.The results are satisfactory.

关 键 词：悬浮光度法 金 地质样品 TMK-吐温-80 

分 类 号：P575.4[天文地球—矿物学]