摘要
建立了一种碘化法提金液中碘及碘离子的连续测定方法,调节溶液酸度,用硫代硫酸钠滴定溶液中碘,在滴定完碘的溶液中,以曙红为指示剂,以硝酸银定量滴定溶液中的碘离子,扣除碘生成的碘离子即可得到溶液中的碘离子。采用定量模拟碘化法提金液验证方法的有效性,同时进行加标回收及精密度实验,加标回收率为98.1%~103%,相对标准偏差(RSD,n=10)在0.19%~0.67%,方法精密度好,可满足碘化提金液中碘及碘离子的分析测定。
A method for continuous determination iodine and iodide in iodinated desugarizationgold process was established in this paper.The acidity of the solution was adjusted.The iodine in the solution was titrated by the sodium thiosulfate standard solution individually.Then,eosin was added as indicator,and the iodide was quantificationally titrated by the silver nitrate standard solution.The iodide ions in the solution can be obtained by quantitatively titrating the iodide ions in the solution with silver nitrate and deducting iodide ions generated by iodine.The effectiveness of the method was verified by quantitative iodination method for gold extraction.At the same time,the standard recovery and precision experiments were performed.The recovery rate was 98.1% to 103%,and the relative standard deviation（RSD,n=10）was 0.19%.0.67%.With good precision,analysis method can meet the requirements for the analysis and determination of iodine and iodide ions in iodized gold extraction solution.
作者
谢燕红
XIE Yanhong(FujianZijin Testing Technology of Mining ＆ Metallurgy Ltd. Xiamen Branch,Xiamen, Fujian 361101, Chin)
出处
《中国无机分析化学》
CAS
2018年第3期50-53,共4页
Chinese Journal of Inorganic Analytical Chemistry
关键词
碘化提金
碘及碘离子
连续测定
iodinated gold leaching
iodineand iodine ion
continuous determination
