摘要
在2％的王水介质中,以对二甲氨基亚苄罗丹宁(DMABR)吸附富集金与其它离子分离,水相中TMK显色测定金,加入丁二酮肟消除钯的影响,银的影响可蒸干离心除去。方法用于矿石中金的测定,结果满意。DMABR对金具有很高的选择性吸附和吸附率,但应用于金的分析还未见有报导。
Gold was separated and precoacentrated by adsorption precipitation with p-dimethylaminobenzalrhodanine in a 2% aqua regin medium. Thio-Michler's ketone was used as the color reagent. Interfernece from Pd was removed by dimethylgloxime. The recovery is better, than 97% for 1-50μg Au. The method has successfully been used to determine down to 3 ppb of gold, and the coefficient of variation was found to be 7.3% for 0.052g/t Au(n = 10).
出处
《岩矿测试》
CAS
CSCD
北大核心
1989年第3期176-179,共4页
Rock and Mineral Analysis
