Abstract：An improved ammonia-iodometry is developed to determine the concentration of copper in a high silver-bearing copper concentrate in Hechi, Guangxi Region. Samples are dissolved by hydrochloric acid-nitric acid-bromine system, and then an appropriate amount of hydrochloric acid is added to eliminate the residual contamination of high content of silver. The pH value of the solution is regulated by ammonia-acetic acid. The concentration of copper is finally determined by titration with standard solution of sodium thiosulfate. Satisfactory results are obtained.
李敏. 改进氨水-碘量法测定高银铜精矿中铜的含量[J]. 地质与资源, 2013, 22(4): 330-332.
LI Min. DETERMINATION OF CONCENTRATION OF COPPER IN A HIGH SILVER-BEARING COPPER CONCENTRATE BY IMPROVED AMMONIA-IODOMETRY. GEOLOGY AND RESOURCES, 2013, 22(4): 330-332.
2013, Vol. 22 
辽公网安备 21010502000112号