火焰原子吸收法与原子发射法测定连铸保护渣中Li2O含量的比较

Comparison of Flame Atomic Absorption and Flame Atomic Emission Methods to Determine Lithium Oxide Content in Continuous Casting Mold Flux Using Atomic Absorption Spectrometer

通过对比分析原子吸收光谱仪火焰原子吸收法与火焰原子发射法测定连铸保护渣中Li2O含量的结果表明，当Li2O量低于1．00mg／L时，火焰原子发射法工作曲线的线性、灵敏度与检出限均优于火焰原子吸收法；当Li2O含量达到10．00mg／L时，火焰原子发射法工作曲线偏差较大，火焰原子吸收法优于火焰原子发射法。

The content of lithium oxide in the continuous casting mold flux was measured by both flame atomic absorption method and flame atomic emission methods on an atomic absorption spectrometer. It was shown that, when the content of lithium oxide is less than 1.00 mg/L, the curve＇ s linearity, sensitivity and detection limit of the emission method are better than the method. But when the content of lithium from the emission method and the absorpti absorption oxide reaches 10. 00 mg/L, large deviation is produced on method is superior to the emission method.