【摘要】 通过用有机溶剂甲基异丁基酮 (MIBK)在 10 %的盐酸溶液中萃取高纯金 (99 99% )中的基体元素 ,使得大量的金得以分离 ,消除了基体的存在对杂质元素测定的干扰 ,使微量的杂质元素的测定成为可能 ,进而用等离子体发射光谱仪测定了高纯金中Cd ,Cr,Cu ,Fe,Mn ,Ni,Pb ,Pt等元素的含量。更多还原

【Abstract】 A system for separation of trace impurity elements (Cd,Cr,Cu,Fe,Mn,Ni,Pb,Pt) from large amounts of matrix element gold is proposed in this paper.It is based on the MIBK extraction.The effect of pH to the extraction is studied,the final measuring solution is effectively 10% hydrochloric acid.The recovery of elements is between 93 3%-100% under this acidity after the first extraction.Content of trace elements of 99 99% gold is in the range 0 1-20 μg·g -1 .更多还原