摘要
探讨了火焰原子吸收法（FAAS法）快速测定铁矿石中金属铁的分析条件。对试样的溶解方法、元素分析线、共存元素干扰、仪器分析最佳条件等进行了试验。金属铁含量在0．2％～2．0％范围与吸光度呈良好的线性，线性方程为y=22．924x-0．8458，相关系数r=0．9991。将该法用于铁精粉样品中金属铁的测定，测定结果的相对标准偏差为1．10％-2．98％（n=6），加标回收率为98．0％～103．O％。
Analytical conditions for determination of metallic iron in iron ore by flame atomic absorption method （FAAS method） were discussed. The analytical conditions including sample dissolution method, element analytical line, interferences of coexisting elements, background correction and working parameters of the spectrometer were studied and optimized. Metallic iron content was linear with absorbance in range of 0.2%-2.0%. The linear equation was y=22.924x-0.845 8 with correlation coefficient of 0.999 1. The method was used for measuring the content of metallic iron in iron ores, and the relative deviation was 1.10%-2.98%（n=6）, the standard adding recovery was in the range of 98.0%-103.0%.
出处
《化学分析计量》
CAS
2013年第4期101-102,共2页
Chemical Analysis And Meterage
关键词
火焰原子吸收光谱法
铁矿
硫酸铜
铁
Flame atomic absorption spectrometry
iron ore
cupric sulfate
metallic iron
