氢化物发生-原子荧光光谱法测定铅锌矿中微量铋

HG-AFS determination of trace bismuth in lead-zinc ore

通过对仪器测定条件和氢化反应介质、酸度及硼氢化钾的浓度等试验条件的优化选择,建立了HG-AFS测定铅锌矿中微量铋的分析方法,并考察了方法的精密度、准确度和检出限.实验结果表明:仪器测量精密度(RSD)为1.93%,试样测量精密度(RSD)为3.04%,加标回收率为95.3%～102.1%,检出限为0.08μg/L.若以0.5 g试样最后定容至50 ml计算,试样的最低检出限为0.008μg/g.

To optimize the choice of measure device, Hydrogenation media, acidity and concentration of potassium borohydride, and other experimental conditions. A determination and analytical methods for trace bismuth in lead-zinc by using the HG-AFS have been establish in the paper. The methods also have been inspected for its precise, accuracy and detection limit. The test results are as： precision measuring instruments （RST） was 1.93 percent, the sample measurement precision （RSD） was 3.04%, recoveries 95.3%～102.1% for the detection limit of 0.08μg/L. In terms of 0.5g sample to 50 ml final volume terms, the minimum sample detection limit of 0.008μg/L.