Abstract

The effect of matrix elements (Na, In, Bi, Zn, Cu) and nitric and hydrochloric acids on the analytical signals of impurity elements in nitrogen microwave-plasma atomic emission spectrometry (MP AES) was studied. In the range of acid concentrations 0.1–0.5 M (for rare-earth elements, 0.1–0.9 M), the analytical signals of the elements did not change. The presence of a matrix element in a concentration of 1 wt % led to a significant change in the signal for most elements, which must be taken into account in selecting a calibration strategy. In MP AES, it is necessary to fully comply with the conformity of samples and calibration solutions regarding the type and concentration of acid and matrix elements.

中文翻译：

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氮微波-等离子体原子发射光谱法中基质元素和酸对分析信号的影响

摘要

研究了氮微波等离子体原子发射光谱法（MP AES）中基质元素（Na，In，Bi，Zn，Cu）以及硝酸和盐酸对杂质元素分析信号的影响。在酸浓度为0.1–0.5 M（对于稀土元素为0.1–0.9 M）的范围内，元素的分析信号没有变化。浓度为1 wt％的基质元素的存在会导致大多数元素的信号发生明显变化，在选择校准策略时必须考虑到这一点。在MP AES中，必须完全符合样品和校准溶液关于酸和基质元素的类型和浓度的一致性。