石墨炉原子吸收光谱法测定铝和镉的灵敏度较高,但它们受基体的影响比较严重,测定钨酸和三氧化钨中微量铝尚有文献报导,测定微量镉还未见到有关文献。本文采用国产仪器,全热解石墨管,对石墨炉原子吸收光谱法测定钨酸及三氧化钨中微量铝和镉进行了实验。选择了最佳条件,对基体元素钨及其在溶样过程中所要接触到的干扰因素进行了考查。提出了消除干扰的措施,选择了合适的溶样方法。采用悬浮液进样解决了因钨酸析出而必须化学分离的困难。样品分解后直接用标准曲线 Graphite furnace atomic absorption spectrometry for the determination of aluminum and cadmium sensitivity is high, but they are more affected by the substrate more serious, the determination of trace amounts of trace tungsten and tungsten trioxide have been reported in the literature, the determination of trace amounts of cadmium has not been found in the literature. In this paper, domestic instruments, pyrolytic graphite tubes were used to test the trace amounts of aluminum and cadmium in tungstic acid and tungsten trioxide by graphite furnace atomic absorption spectrometry. The optimum conditions were chosen to examine the matrix element tungsten and its interference factors to be found in the sample dissolution process. Proposed to eliminate interference measures, choose a suitable method of dissolution. The use of suspension sampling eliminates the difficulty of chemical separation that can occur due to tungstic acid precipitation. Decompose the sample directly after the standard curve