原子吸收中标准加入法的准确度探讨和检验

STUDY AND JUDGMENT ON ACCURACY OF STANDARD ADDITION IN AAS ANALYSIS

实验表明采用标准加入法测得的分析结果与干扰介质的含量、被测元素的含量及样品浓度有关。修正了前人对标准加入法使用条件的认识,探讨了由于样品中干扰介质的浓度变化造成对分析结果影响的原因。提出了一种简单的方法来检验原子吸收光谱分析中用标准加入法测得的结果是否可靠。

Using Standard Addition Method in AAS, the relationship between analytical result and concentration of interiering composition, tested elements has been expressed by means of experiments. The common consideration on condition using standard Addition has been revised. The cause of error has been studied. At last, a new method for judgement of analytical datum accuracy has been put forward.