基体匹配-电感耦合等离子体原子发射光谱法测定新型抗菌不锈钢中镓  

Determination of gallium in new antibacterial stainless steel by matrix matching-inductively coupled plasma atomic emission spectrometry

作　　者：于英杰 李辉[1] 张重远[1] YU Yingjie;LI Hui;ZHANG Zhongyuan(Institute of Metal Research,Chinese Acadamy of Sciences,Shenyang 110016,China)

机构地区：[1]中国科学院金属研究所,沈阳110016

出　　处：《化学分析计量》2022年第3期27-30,共4页Chemical Analysis And Meterage

摘　　要：建立电感耦合等离子体原子发射光谱法测定含镓抗菌不锈钢中镓含量的方法。样品用盐酸和硝酸溶解,在优化的仪器条件下,选择417.206 nm作为分析谱线。采用基体匹配法绘制工作曲线,用以消除基体铁的基体效应;采用铁基体为校准空白,用以消除铁基体的光谱干扰。标准工作溶液中镓光谱强度与基体空白溶液中镓光谱强度之差与镓的质量分数在0.10%~5.00%范围内具有良好的线性关系,相关系数为0.999 9,检出限为0.001 2%。样品加标平均回收率为97.9%~103.6%,测定结果的相对标准偏差为0.22%~0.40%(n=6)。该方法可用于快速测定新型抗菌不锈钢中镓。A method for the determination of gallium content in Ga-bearing antibacterial stainless steel by matrix matching-inductively coupled plasma atomic emission spectrometry was established. The sample was prepared in hydrochloric acid and nitric acid and subjected to mineraliztion via digestion. Under the optimized instrument conditions,417.206 nm was selected as the analytical spectral line. The working curve was established by matrix matching method to elminate the matrix interferrence of iron. The iron matrix blank was used as the calibration blank to eliminate the spectral interference of iron. The difference between the specral intensity of standard working solution and the spectral intensity of matrix blank solution had a good linear relationship with the mass fraction of gallium in the range of 0.10%-5.00%,the correlation coefficients was 0.999 9, and the detection limit was 0.001 2%. The average recoverie was 97.9%-103.6%,and the relative standard deviation of determination result was 0.22%-0.40%(n=6). The method can be used for the rapid determination of gallium in new antibacterial stainless steel.

关 键 词：电感耦合等离子体原子发射光谱法 基体匹配 抗菌不锈钢 镓 

分 类 号：O657.3[理学—分析化学]