论文部分内容阅读
目的:对比及建立茶叶中镉的微波消解—石墨炉原子吸收光谱法测定方法及其浸出规律研究。方法:微波消解—石墨炉原子吸收光谱法测定。结果:简化前处理方法,镉元素浸出率随着浸泡次数的增加而降低。结论:方法准确度、精密度良好、灵敏度高,是实用的测定茶叶中镉的方法,其浸出规律可为今后制定茶标准时提供一定的参考意义。
OBJECTIVE: To compare and establish a method for determination of cadmium in tea by microwave digestion - graphite furnace atomic absorption spectrometry and its leaching law. Methods: Microwave Digestion - Graphite Furnace Atomic Absorption Spectrometry. Results: Simplifying the pretreatment method, the cadmium leaching rate decreased with the increase of soaking times. Conclusion: The method is accurate, accurate and sensitive. It is a practical method for the determination of cadmium in tea. The leaching law can provide reference for the formulation of tea standard in the future.