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前言在硫酸盐等的存在下,对钙、镁的测定干扰严重,过去多用化学分离或改变光谱条件等方法进行测定。本文提出不经化学分离,利用计算机-原子吸收光谱方法,建立了一定的数学模型,直接测定并计算出钙、镁浓度及干扰组分硫酸根的浓度。用计算机处理方法及其数学模型可适用于类似情况的其他元素的测定。实验 1.原子吸收光谱测定条件:仪器为日本岛津AA—610S型。空气-乙炔火焰。单缝燃烧器,具体条件见表1。 2.实验结果:在钙、镁、钠、硫酸根等的共存试样中,分别做出纯钙、镁的工作曲线。在此基础上
Preface In the presence of sulphates and the like, the determination of calcium and magnesium interferes with the measurement. In the past, chemical separation or spectral conditions were used for the determination. In this paper, we establish a mathematical model without chemical separation and use computer-AAS method to directly determine and calculate the concentration of calcium and magnesium and the concentration of sulfate in the interference component. Computer processing methods and their mathematical models can be applied to the determination of other elements in similar situations. Experiment 1. Determination of atomic absorption spectrometry conditions: Japan Shimadzu AA-610S type instrument. Air - acetylene flame. Single-slit burner, the specific conditions in Table 1. 2. Experimental results: In the coexistence of calcium, magnesium, sodium, sulfate and other samples, respectively, made of pure calcium and magnesium curve. on the basis of