火焰原子吸收测定土壤中钴微波消解优化的研究

Determination of Microwave Digestion of Cobalt in Soil with Flame Atomic Absorption Spectrometry

[目的]为了探索准确、高效测定土壤中重金属钴的微波消解方法。[方法]通过对原子吸收法测定土壤中钴的前处理环节微波消解条件的优化,于电热板赶酸环节添加高氯酸。[结果]在不延迟测定时间的情况下,弥补了微波消解仪禁止使用高氯酸的不足。[结论]利用成熟的硝酸-氢氟酸-高氯酸消解体系,提高测定效率,保证测定结果准确。

[ Objective] The research aimed to explore the accurate and efficient microwave digestion method of cobalt in the soil. [ Method ] The determination of cobah in soil was improved by atomic absorption method of preprocessing of microwave digestion conditions, and the per- ehloric acid during the driving acid was added on the electrothermal plate. [ Result] Without delay the measurement time, the deficiency of the microwave digestion instrument prohibiting the use of perchloric acid was made up. [ Conclusion] Using mature nitric hydrofluoric acid perchlorie acid digestion system, the determination of efficiency was improved and the accuracy of measurement results were ensured.