混砂焙烧-火试金法测定文丘里泥中金、银含量  

Determination of Gold and Silver in Venturi Mud by Mixed Sand Roasting-Fire Gold Test

作　　者：周宏鼎 万双 武守忠 李先和 ZHOU Hongding;WAN Shuang;WU Shouzhong;LI Xianhe(Shandong Yanggu Xiangguang Copper Co.,Ltd.,Liaocheng,Shandong 252327,China)

机构地区：[1]阳谷祥光铜业有限公司,山东聊城252327

出　　处：《中国无机分析化学》2020年第5期54-57,共4页Chinese Journal of Inorganic Analytical Chemistry

摘　　要：建立了文丘里泥中金、银含量的测定方法。将所称试样置于已有10 g的石英砂中,并混匀;在750℃的条件下焙烧90 min除去硒后,将冷却至室温的试料搅散,加入试金熔剂,用火试金法连续测定金、银的量。测定文丘里泥中金、银的相对标准偏差分别小于1.5%、0.70%,加标回收率金为98.6%~103%;银为96.7%~98.2%。结果稳定、可靠,且同时测定金、银含量。A method for the determination of gold and silver in Venturi mud has been established.The said sample was placed in quartz sand of 10 g and mixed.After removing selenium by roasting at 750℃for 90 minutes,the sample cooled to room temperature was stirred up,and the amount of gold and silver was continuously determined by fire assay method.The relative standard deviations of gold and silver in Venturi mud determined by this method are less than 1.5%and 0.70%,respectively.The recoveries of standard addition are between 98.6%and 103%for gold and 96.7%to 98.2%for silver.The results were stable and reliable,and the contents of gold and silver were determined simultaneously.

关 键 词：混砂焙烧 火试金法 文丘里泥 金 银 

分 类 号：O655.1[理学—分析化学]