活性炭吸附-火焰原子吸收光谱法测定粗硒中的金

建立了活性炭吸附-火焰原子吸收光谱法测定粗硒中金量的分析方法。讨论了称样量、溶样条件和活性炭的灰化程度对金量测定的影响,并且对火焰原子吸收光谱法与火试金法测定粗硒中的金量做了比较。火焰原子吸收光谱法和火试金法测定的相对标准偏差分别为1.3%~5.9%和0.91%~7.8%;加标回收率分别为93.1%~100.7%和94.8%~102.2%。结果表明,方法有较好的精密度和准确度,并且具有较强的实用性。

Determination of Gold in Crude Selenium by Activated Carbon Absorption-Fire Atomic Absorption Spectrometry

A method has been established for the determination of gold in crude selenium by carbon adsorption-fire atomic absorption spectrometry. The effect of the sample weight, the sample pre-treatment conditions and the ashing degree of activated carbon on the determination of gold was investigated, and the contents of gold in crude selenium by fire atomic absorption spectrometry method and fire assay method were compared. The relative standard deviations(RSDs) obtained by fire atomic absorption spectrometry method and fire assay method were 1.3%~5.9% and 0.91%~7.8%,respectively. The recoveries were 93.1%~100.7% and 94.8~%102.2%, respectively. The results show that this method has good precision and accuracy, and it has strong practicality.