摘要
在 7.0 mol/L盐酸介质中 ,在抗坏血酸存在下 ,用 2 -乙基己醇萃取试样溶液中的酸性铬蓝 K-镓的络合物 ,然后用 30 g/L 的硫脲将络合物反萃取到水相中 ,用 FAAS法测定镓 ,据此建立了萃取反萃取 - FAAS法测定微量镓的新方法。方法线性范围为 0～ 60 .0 mg/L,灵敏度为 0 .2 8mg/L/1 %。
Based on extraction and back extraction FAAS, a method of determination of gallium was described. In 7.0 mol/L hydrochloric acid solution with presence of ascorbic acid, the of complex of acidic chrome blue K gallium was extracted from samples by 2 ethyl hexanol.The complex was then back extracted into aqueous phase by thiourea.The amount of gallium was determined by FAAS. The linear range of calibration curve is 0～60.0 mg/L. The sensitivity is 0.28 mg/L for an absorbance of 1%. The method was applied to determine microamounts of gallium in sodium aluminate solution with satisfactory results.
出处
《分析试验室》
CAS
CSCD
2000年第5期15-17,共3页
Chinese Journal of Analysis Laboratory
关键词
原子吸收光谱法
2-乙基己醇
萃取
镓
微量分析
Flame atomic absorption spectroscopy
Extraction and back extraction
Complex of acidic chrome blue K-gallium
2-Ethyl hexanol
Gallium
