用石墨炉原子吸收法测定纯铁和碳素钢中硅,灵敏度高,但在原子化阶段,硅易生成碳化物,影响它的灵敏度和重现性。本文用塞曼效应石墨炉原子吸收法对影响硅测定灵敏度的各种因素、干扰情况和测定条件进行了试验确定了直接测定的最佳条件。方法简便、快速,精度好。 The graphite furnace atomic absorption method for the determination of pure iron and carbon steel in silicon, high sensitivity, but in the atomization stage, silicon is easy to produce carbides, affecting its sensitivity and reproducibility. In this paper, Zeeman effect of graphite furnace atomic absorption method to determine the sensitivity of silicon determination of various factors, interference and determination of the conditions were tested to determine the direct determination of the best conditions. The method is simple, fast and accurate.