Abstract

The review covers modern directions of the implementation of high-resolution continuous-source electrothermal atomic absorption spectrometry (HR CS ETAAS) for quantitative analysis. Approaches to the direct analysis of solid samples of various compositions, including determination using aqueous reference solutions, analysis of suspensions and sorbates after sorption separation, use of various modifiers, and optimization of the program of heating graphite furnace are systematized. Restrictions of HR CS ETAAS in the determination of poorly volatile elements are noted, methods for increasing the rate of their atomization in a graphite furnace are described. The potentials of HR CS ETAAS for the simultaneous and consecutive monitoring of atomic lines are investigated. The difference between the simultaneous multielement determination and consecutive determination in one aliquot portion is noted. Restrictions of simultaneous multielement analysis by HR CS ETAAS in the number of elements, their thermochemical properties, and intensities of corresponding absorption lines are described. Possibilities of molecular absorption spectrometry for the determination of analytes whose atomic absorption lines are outside the continuous spectrum range of 190–900 nm are discussed. A promising approach to the determination of sulfur, phosphorus, halogens, and aluminum by absorption lines of diatomic molecules is presented.

中文翻译：

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高分辨率连续源电热原子吸收光谱法的当今可能性

摘要

这篇综述涵盖了用于定量分析的高分辨率连续源电热原子吸收光谱法（HR CS ETAAS）实施的现代方向。系统化了直接分析各种组成的固体样品的方法，包括使用参考水溶液进行测定，在吸附分离后分析悬浮液和山梨酸盐，使用各种改性剂以及优化石墨炉加热程序的方法。指出了HR CS ETAAS在确定难挥发元素中的局限性，并描述了在石墨炉中提高其雾化速率的方法。研究了HR CS ETAAS用于同时和连续监测原子线的潜力。注意在一个等分部分中同时进行的多元素确定和连续确定之间的差异。描述了通过HR CS ETAAS进行的同时多元素分析对元素数量，其热化学性质和相应吸收谱线强度的限制。讨论了分子吸收光谱法测定原子吸收谱线在190-900 nm连续光谱范围之外的分析物的可能性。提出了一种通过双原子分子吸收线测定硫，磷，卤素和铝的有前途的方法。描述相应的吸收线的强度。讨论了分子吸收光谱法测定原子吸收谱线在190-900 nm连续光谱范围之外的分析物的可能性。提出了一种通过双原子分子吸收线测定硫，磷，卤素和铝的有前途的方法。描述相应的吸收线的强度。讨论了分子吸收光谱法测定原子吸收谱线在190-900 nm连续光谱范围之外的分析物的可能性。提出了一种通过双原子分子吸收线测定硫，磷，卤素和铝的有前途的方法。