岩矿测试2011，Vol.30Issue(3)：370-374,5.
活性炭吸附-碘量法测定金矿石中金的不确定度评定
Uncertainty Evaluation for Iodometric Determination of Gold in Gold Ores with Activated Carbon Adsorption
汪永顺 1范广勤 1曹开科 1王文芳1
作者信息
- 1. 青海省有色地质矿产勘查局测试中心,青海西宁,810007
- 折叠
摘要
Abstract
According to the evaluation method to measure uncertainty, we evaluated the uncertainty of the gold determination in ore by using activated carbon adsorption-iodimertric. The experimental samples were calcined from room temperature to 650℃ for2 h to remove sulphur, then dissolved by the 50％ (volume fraction) aqua regia for 1 h. The gold was absorbed from the solution by activated carbon dynamic adsorption suction filter. The carried gold carbon cineration was dissolved again before the gold was titrated by sodium hyposulfite standard solution. This method is simple, rapid and strong practicability. The uncertainties of measurement consist of the consumed volumes and titer of sodium hyposulfite standard solution to gold, sample weight, duplications and so on. The standard uncertainty was obtained by quantifying and synthesizing each branch of uncertainties measurement results, then converted into the expansion uncertainty. The result indicates that the main uncertainty is from the titer of sodium hyposulfite standard solution.关键词
活性炭吸附/碘量法/金/金矿石/不确定度评定Key words
activated carbon adsorption/ iodometric method/ gold/ gold ore/ uncertainty evaluation引用本文复制引用
汪永顺,范广勤,曹开科,王文芳..活性炭吸附-碘量法测定金矿石中金的不确定度评定[J].岩矿测试,2011,30(3):370-374,5.
