摘要
采用醋酸丁酯草取矿样中的微量金，结晶紫显色，分光光度法测定，pH1．8～2．5。紫色有机相的最大吸收波长为596nm，表观摩尔吸光系数为9．3×103L·mol-1·cm-1,An的质量浓度在0．10～5.00μm／ml范围内符合比耳定律，样品中Au的含量0.4μm／ml时的方法精密度（RSD，n=5）为4．00％，加标回收率为93～110％。
Trace An in ore samples in extracted with butyl acetate, determined by spectrophotometry at pH 1.8~2. 5, crystal violet is used for color dvelopment.The maximum absorbance of the violet organic phase is at 600nm with a molar absorptivity of mol-1. cm-1.Beer's law is obeyed in the range of 0.10-5. 00μg/ml for Au. The standard recovery is 93%-110% and the relative standard deviation is 4.00% (n=5) for 0. 4μg/ml fo Au.
出处
《盐湖研究》
CSCD
1998年第2期60-65,共6页
Journal of Salt Lake Research
关键词
金
萃取
分光光度法
矿石
Gold, Extraction, Spectrophotometry.
