盐酸溶样—火焰原子吸收光谱法测定氰化尾渣中的金  

Determination of Gold in Cyanide Tailing by Flame Atomic Absorption Spectrometry With Dissolving Sample Using Hydrochloric Acid

作　　者：师兆忠[1] 郝喜才[1] 韩艳霞[1] 

机构地区：[1]开封大学材料与化学工程学院,河南开封475001

出　　处：《湿法冶金》2018年第1期82-85,共4页Hydrometallurgy of China

基　　金：河南省科技攻关计划项目(No.162102210342);开封大学博士基金资助项目(BS2016001);河南省高校重点科研项目资助计划项目(18A150037)

摘　　要：研究了在搅拌条件下用盐酸溶解氰化尾渣,以火焰原子吸收光谱法测定金。结果表明:用盐酸溶解样品,不发生喷溅现象,且不受样品质量限制;对氰化尾渣,在100℃、盐酸过量系数2.0条件下溶解1.0h,然后用火焰原子吸收光谱法测定,结果与标准物质(GBW07808b,GBW07809b)基本吻合;方法精密度、准确度较高;与王水溶样方法相比,测定结果之差的绝对值与其扩展不确定度的比值为0.023(<1),表明方法可行。Determination of gold in cyanide tailing by hydrochloric acid dissolving sample and flame atomic absorption spectrometry was studied. The results show that the sample is dissolved using hydrochloric acid,the system is no splash,and is not controlled by sample mass. For cyanide tailing, under the conditions of 100 ℃ ,hydrochloric acid excessive coefficient of 2.0 and dissolving time of 2 hours, the determination results by the method is in accordance with reference material（GBW07808b, GBW07809b）. The method has high accuracy. Compared with the method of dissolving sample using aqua regia, the ratio of the difference absolute value of two methods to uncertainty value is 0. 023 （〈1）which proves that the method is feasible.

关 键 词：氰化尾渣 火焰原子吸收光谱法 盐酸 溶解 金 测定 

分 类 号：O657.3[理学—分析化学]