摘要
本文是对碘化钾分光光度法连续测定微量锑 ,铋的改进研究。根据试验结果 ,在聚乙烯醇存在下 ,锑、铋的最大吸收波长分别为425nm和465nm ,表明摩尔吸光系数分别是4.08×103L·mol-1·cm -1和1.19×104L·mol-1·cm -1 ,锑、铋的线性范围分别是0～360μg/25mL和0～300μg/25mL。在硫脲和硫氰酸钾共同存在下 ,直接测定铜电解液中微量的锑、铋 ,获得令人满意结果。
Improve of one after another determination of trace Sb and Bi by KI Spectrophotometry has been established.According to experimental results:under PVA exist the measuring wavelength of Sb and Bi is 425nm and 465nm,the apparent molar absorption coefficient of Sb and Bi is 4.08×103L.mol-1.cm-1and1.19×104L.mol-1 .cm-1,Beer's law is obeyed for0～360μg/25mL and 0～300μg/25mL.Under thiourea and KSCN exist,the proposed method has been applied to the direct determination of Sb and Bi in Cu Electrolyte,with satisfactory results.
出处
《湖南有色金属》
CAS
2000年第1期39-39,共1页
Hunan Nonferrous Metals
