原子吸收光谱法测定微量碱土金属是方便、通用的方法。据文献报导,当某些化学干扰存在时,常采用镧或锶作释放剂。而镧与锶的释放效果哪个好?本文以测定钙为例,从氯化镧和氯化锶对钙的影响以及当磷酸根、硫酸根、硅酸根和铝等干扰离子存在时,加入氯化 Atomic absorption spectrometry for the determination of trace alkaline earth metals is a convenient and versatile method. According to the literature, lanthanum or strontium is often used as a releasing agent when certain chemical interferences exist. However, the effect of lanthanum and strontium release is better. In this paper, the determination of calcium, for example, from lanthanum chloride and strontium chloride on the impact of calcium and phosphate, sulfate, silicate and aluminum ions such as interference, the addition of chlorination