地电化学泡塑载体分析质量监控预研究

摘要

The analysis of geoelectrochemical foam carrier often suffers from the lack of effective analytical quality control methods, which would limit the application and extension of the geoelectrochemical method. In this paper, the experiment of adding standard so⁃lution to the blank foam was conducted to meet the analytical quality monitoring of the widely used foam pretreatment means of ashing method. The results show that this method would solve analytical quality monitoring for Au, and the accuracy of analysis can even be higher than the requirements of soil analytical accuracy in multi⁃purpose regional geochemical survey. In contrast, there are varying de⁃grees of elements'loss during the ashing process for Cu, Ni, Pb, Zn, therefore this method is not suitable for these elements.%地电化学泡塑载体分析测试中一直缺乏有效的分析质量监控方法，影响了方法技术的应用推广。针对应用较广泛的泡塑预处理方法———灰化法，实验了在空白泡塑中加入标准溶液的方法，对分析质量进行监控。结果表明，使用这种方法应该可以解决Au的分析质量监控问题，实验的分析准确度甚至可满足多目标区域地球化学调查中土壤样品分析质量监控要求；而针对Cu、Ni、Pb、Zn等，在灰化过程中存在不同程度的元素损失，暂时不适合使用该方法。