硅钙合金中钙含量的测定

Measurement of Calcium in the Silicon Calcium Alloy

研究了用一氧化二氮-乙炔火焰原子吸收光谱法测定硅钙合金中钙,并对样品消化处理条件和干扰因素进行了综合考虑。该法灵敏度高、步骤简单,操作容易掌握,干扰少等特点。其相对标准偏差均小于1．0％(n=6)。加标回收率均为97．0％-100．0％范围内,本法完全达到了仪器分析质量与质量控制要求。

The amount of calcium in the silicon calcium alloy was determined by nitrous oxideacetylene flame atomic absorption spectrometer. The optimum conditions were studied. The method has the advantages of high sensitivity,less interference and good in selectivity and reappearance. The relative standard deviations are all less than 1.0% （n=6）with standard adding recovery of 97.0%-- 100.0% ,which are satisfactory for quality of laboratory.