不同消解法测定茶叶中4种元素含量

孙 艺1; 2; 3; 罗小宝1; 2; 3

文章摘要

孙艺1，2，3，罗小宝1，2，3.不同消解法测定茶叶中4种元素含量[J].海南师范大学学报自科版,2021,34(2):172-176

不同消解法测定茶叶中4种元素含量

Determination of Four Nutrient Elements inTea by Different Digestion Metheods

DOI：10.12051/j.issn.1674-4942.2021.02.009

中文关键词: 超微波消解普通微波消解湿法消解茶叶样品营养元素

英文关键词: super microwave digestion common microwave digestion wet digestion tea sample nutrient elements

基金项目:

作者	单位
孙艺1，2，3，罗小宝1，2，3	1. 广东省食品工业研究所有限公司，广东广州 511442； 2. 广东省食品工业公共实验室，广东广州 511442； 3. 广东省食品质量监督检验站，广东广州 511442

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中文摘要:

采用超级微波消解、普通微波消解、湿法消解三种消解方法，结合电感耦合等离子体发生光谱仪（ICP-OES）测定了茶叶中钙、铁、锌、镁4种营养元素的含量。通过比较三种消解方法的实验时长、消解效果、精密度以及回收率，探索超级微波消解技术的适用性和优势。研究表明超级微波法对于有机物含量较多的、成分复杂的茶叶样品有良好的消解效果，且消解速度明显优于其他两种消解方法。因此，超级微波消解法可以作为茶叶中元素分析有效的前处理方法大大提高工作效率，测定结果准确可信。

英文摘要:

The content of Calcium, Iron, Zinc, and Magnesium in tea were determined by using three digestion methods in⁃ cluding super microwave digestion, ordinary microwave digestion and wet digestion, combined with inductively coupled plasma generation spectrometer (ICP-OES). The applicability and advantages of the super microwave digestion technology were explored by comparing the experimental time, digestion effect, precision of the measurement result and recovery rate of the three digestion methods. Studies have shown that the super microwave method had a good digestion effect for tea sam⁃ ples with a large amount of organic matters and complex ingredients, and the digestion speed was significantly better than the other two digestion methods. In summary, the super microwave digestion method could be used as an effective pretreat⁃ ment method for element analysis in tea, which greatly improved the work efficiency with the accurate and reliable measure⁃ ment results.

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