火焰原子吸收法测定原矿中氧化铜的含量

摘要

The crude ore were treated with 1% sodium sulfite as the inhibitor,and were vibrated for 45 minutes by 3% sulfuric acid solution.The content of copper oxide in the filtrate after mechanical shaking treatment was measured by flame atomic absorption spectrometry.Under the optimumdetermination conditions, the recoveries were in the range of 98%~102%,and the standard relative standard deviations (n=6) were below 5%.The result was accurate and reliable.%原矿用1%的亚硫酸钠为抑制剂,经3%的硫酸溶液震荡浸取45min,采用火焰原子吸收法测定震荡后的滤液中氧化铜含量.该方法用于矿样中氧化铜含量的测定,加标回收率在98%~102%之间,测定值的相对标准偏差(n=6)在小于5%之间,测定结果准确可靠.