石墨炉碱溶消解-离子色谱法同时测定硫磺中氟、氯,硫酸根

建立了石墨炉碱溶消解-离子色谱法同时测定硫磺中氟、氯、硫元素的方法,选择各元素的分析谱线,采用外标法绘制曲线,方法的检出限0.0019~0.022μg/mL,方法的加标回收率在81.0%~113%,测定值的相对标准偏差(n=5)小于3.4%。方法的研究成功填补了硫磺中氟、氯、硫酸根测定的空白。

Determination of Fluorine, Chlorine and Sulfate Elements in Sulphur by Graphite Furnace Alkali Soluble-Ion Chromatography

A method for simultaneous determination of fluorine, chlorine, and sulfur in sulfur by graphite furnace alkaline soluble digestion-ion chromatography was proposed. The analytical lines of each element were selected, and the curve was drawn using the external standard method. The detection limit of the method was 0.00189 ug/ml -0.02168 ug/ml., the recovery rate of the method was 81 % ~ 113 %, and the relative standard deviation (N = 5) of the measured value was less than 3.4 %. Ion chromatography has fast and convenient, high sensitivity, simultaneous determination of multiple elements in a single solution sample, good selectivity, less interference between elements, matrix that can adapt to different samples, and high accuracy and precision. The method successfully fills the blank of fluorine, chlorine and sulfur in sulfur-free.