摘要
本文介绍在邻苯二甲酸氢钾一氢氧化钠缓冲溶液(pH 5.5)中,Ga(Ⅲ)与CAB、CPC和TritonX—100形成紫色络合物,λmax=650,εmax=1.32×10~5,Ga(Ⅲ)含量在0～12μg/25ml范围内符合比尔定律。所拟定的方法用于测定粘土中的微量镓,结果令人满意。
A highly sensitive method for the spectrophotometric determination of gallium with CAB and cetylpyridinium chloride and TritonX-100 has been described. The optimum range of pH is 5.0-6.5. The maximum absorption is obtained at 650 nm with molar absorptivity being 1.32x105. The molar ratio of Ga to CAB to CPC is 1 : 3 : 3. Beer's law is obeyed in the range 0 to 12ug/25 ml for Ga. After separation with n-butyl acetate the common ions do not interfere. The method has been applied to the determintion of Ga in clay ores with satisfactory results.
出处
《冶金分析》
CAS
CSCD
北大核心
1990年第2期16-18,共3页
Metallurgical Analysis
