摘要
本文研究了用国产强碱性氯型阴离子交换树脂分离除去矿石中大量存在的Zn2 + 、Pb2 + 、Al3 + 、Ca2 + 等离子对镓测定的干扰 ,用 6mol L的HCl-抗坏血酸溶液消除Fe3 + 等高价杂质离子的影响 ,留于柱上的镓用 0 5mol LHCl溶液洗脱 ,在酸性和TiCl3 存在条件下 ,用苯萃取 ,测定GaCl4-与丁基罗丹明B形成的紫红色配合物。用于铅锌矿石中微量镓 (Ga)的测定 ,回收率在 96 3%左右 ,RSD为 2 4‰ ,结果令人满意。
This paper developed a spectrophotometric determination of micro amounts of Gallium with butylrhodamineB in lead-zinc mineral. Large amounts of interfering ions Zn 2+ ?Pb 2+ ?Al 3+ ?Ca 2+ can be separated by anion exchange resin. High bond ions can be eliminated by using 6 mol/L hydrochloric acid-ascorbic acid.Gallium remained in column can be eluted by 0.5 mol/L hydrochloric acid. In the presence of acidic and Titanium chloride, by means of benzene extracting,determined the ultraviolet-red complex combined GaCl - 4 with butylrhodamineB.The method has been applied to determination of micro amounts of Gallium in lead-zinc mineral satisfactorily.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2002年第9期16-19,共4页
Journal of Chongqing University
