抽滤结合微波加热在重量法快速测定钡盐的应用研究
——改进方法与传统方法的对比
Application Research on Rapid Determination of Barium Salt by Gravimetric Method Combined with Microwave Heating
——Comparison between the proposed methods and traditional methods
摘 要
传统重量法测氯化钡中钡含量实验是分析化学实验的重要内容之一，但它的缺点也显而易见，例如：正常测定一次所需的时间至少要10小时并且耗能较大。因此本论文在常规法的基础上，对该实验方法作了新的改进。用抽滤代替了传统过滤并选用极性大的溶剂冲洗沉淀，将试样用马弗炉灼烧改为烘箱烘或微波炉加热，其分析结果的准确度与精密度都符合分析实验的要求，说明该方法具有普遍适用性。
The traditional gravimetric method for the determination of Barium content in Barium chloride is an important part of analytical chemistry experiments, but its disadvantages are also obvious. For example, the time required for a normal measurement is at least 10 hours and the energy consumption is large. Therefore, this dissertation makes a new improvement to the experimental method based on the conventional method. Using suction filtration instead of traditional filtration and using a solvent with a large polarity to wash the precipitate, the sample was changed from muffle furnace burning to oven baking or microwave heating. The accuracy and precision of the analysis results were in accordance with the requirements of the analysis experiment, indicating its universal applicability.
关键词： 钡离子； 重量分析法； 抽滤； 微波加热；
Key words: barium ion; gravimetric method; suction filtration; microwave heating;
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