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流动分析法测定卷烟纸中的钙、镁含量

Determination of Calcium and Magnesium in Cigarette Paper with Autoanalyzer

  • 摘要: 考察了消化液体积和温度对卷烟纸中钙和镁含量检测结果的影响,并采用该方法和离子色谱法检测了20个卷烟纸样品。结果表明:①卷烟纸样品消化的适宜条件:卷烟纸样品0.2~0.3 g;消化液5 mL硝酸-高氯酸混合液;消化温度300℃;消化时间1 h;②钙、镁的RSD分别为0.93%,2.95%,回收率为96.7%~102.9%和98.6%~106.7%;③国产卷烟纸样品钙、镁含量的均值各为117.4和1.09 mg/g,进口卷烟纸样品钙、镁含量均值116.0和1.17 mg/g;④2种方法的钙、镁含量检测值在0.05水平下无显著性差异。该法适合于卷烟纸中钙和镁含量的分析。

     

    Abstract: The effects of digestion solution volume and digestion temperature on the results of calcium and magnesium contents in cigarette paper determined by an autoanalyzer were investigated,and 20 cigarette paper samples were detected paralleled with ionic chromatography.The results showed that:1) The appropriated conditions for cigarette paper digestion were 0.2 to 0.3 g cigarette paper digested in 5 mL of perchloric acidnitric acid mixed solution at 300℃ for one hour.2) The recoveries of calcium and magnesium ranged from 96.7% to 102.9% and from 98.6% to 106.7% with the relative standard deviation (RSD) of 0.93% and 2.95%, respectively.3) The average contents of calcium and magnesium in domestic paper samples were 117.4 and 1.09,and in imported paper samples were 116.0 and 1.17 mg/g, respectively.4) There was no significant difference between the measurements of the two methods at 5% confidence level.It suggested that the method was suitable for the determination of calcium and magnesium in cigarette paper.

     

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