论文部分内容阅读
建立了原子荧光光谱法测定锡精矿中汞的分析方法。试样经王水(1+1)溶解,以盐酸(5%)为载流,氯化亚锡(200g/L)溶液为还原剂,用原子荧光光谱法测定样品中的汞。考察了测定的最佳条件、锡及共存元素对测定的影响。方法相对标准偏差为5.9%~6.3%,与冷原子吸收光谱法对比结果令人满意。方法的准确度和精密度均能满足分析需要,具有较强的实用性。
A method for the determination of mercury in tin concentrates by atomic fluorescence spectrometry was established. The sample was dissolved in aqua regia (1 + 1). Hydrochloric acid (5%) was used as a carrier and stannous chloride (200 g / L) was used as a reducing agent to determine mercury in the sample by atomic fluorescence spectrometry. The optimum conditions for the determination, the influence of tin and coexisting elements on the determination were investigated. The relative standard deviation of the method was 5.9% ~ 6.3%, which was satisfactory compared with cold atomic absorption spectrometry. The accuracy and precision of the method can meet the needs of the analysis, with strong practicality.