摘要
试样经盐酸-硝酸-氢氟酸-高氯酸四酸溶解，盐酸复溶作介质，用火焰原子吸收光谱法连续测定矿石中铜、铅、锌和银四种元素。实验结果表明，四酸溶样效果最佳，相对标准偏差（n＝5）Cu：0．92％～2．63％，Pb：1．12％～3．04％，Zn：0．80％～2．47％，Ag ：1．15％～2.98％；加标回收率Cu：96．8％～104．0％，Pb：96．8％～101．8％，Zn：98．1％～103．3％， Ag ：97．2％～102．2％；测定范围Cu的为1～500μg ＆#183; g -1，Pb的为5～2000μg ＆#183; g -1，Zn为5～1000μg＆#183;g -1，Ag为0．5～200μg＆#183;g -1。方法前处理简单、实用，同时连续测得多种元素，满足地矿实验室的日常检测。
The samples of copper , lead , zinc and silver in ore were dissolved with a four -acid system of HCl- HNO3 - HF - HClO4 , and made the determination by Flame Atomic Absorption Spectrometry （ FAAS） in hydrochloric acid medium . The experimental results show that the samples were completely dissolved with four -acid system . The relative standard deviation （ RSD , n = 5） for Cu was in the range of 0 .92% ~2 .63% , for Pb was in the range of 1 .12% ~3 .04% , for Zn was in the range of 0 .80% ~2.47% and for Ag was in the range of 1 .15% ~2 .98% . With the standard addition , the recovery for Cu was in the range of 96 .8% ~104 .0% , for Pb was in the range of 96 .8% ~101 .8% , for Zn was in the range of 98 .1% ~103 .3% and for Ag was in the range of 97 .2% ~102 .2% . The range of measurement for Cu was 1~500μg.g -1 , for Pb was 5~2 000μg.g -1 , for Zn was 5~1 000μg.g -1 and for Ag was 0 .5~200μg.g -1 . The method was simple and practical with simultaneous determination of many elements , which meet the demands for geological mining lab daily testing .
出处
《有色矿冶》
2014年第2期98-100,共3页
Non-Ferrous Mining and Metallurgy
关键词
火焰原子吸收光谱法
矿石
铜
铅
锌
银
flame atomic absorption spectrometry
ore
copper
lead
zinc
silver
