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引言1.1 概述虽然化学火焰已广泛应用于原子光谱分析,但是仍然存在一些缺点。基本因素之一是其原子化效率较低。因此,研究了几种另外的基于辉光放电、稳定电弧、炉和丝的技术作为原子化的手段,其目的是在较小的体积中得到较高的原子浓度。用于原子吸收测量的在高温石墨炉中将试样电热原子化的方法已显示出最广阔的前景。它兼顾了非常高的原子化效率和适应固体试样或通常需要一些预处理的试样的能力。另外的好处是可以在受控的气氛中工作。然而,与火焰原子化法相比,在电热原子化器中
Introduction 1.1 Overview Although chemical flames have been widely used in atomic spectroscopy, there are still some disadvantages. One of the basic factors is its low atomization efficiency. Therefore, several additional techniques based on glow discharge, stabilized arc, furnace and filament were investigated as a means of atomization with the aim of obtaining higher atomic concentrations in smaller volumes. The method of electrothermal atomization of a sample in a high-temperature graphite furnace for atomic absorption measurement has shown the most promising. It takes into account the very high atomization efficiency and the ability to adapt to solid samples or samples that usually require some pretreatment. Another benefit is that you can work in a controlled atmosphere. However, compared with the flame atomization method, in an electrothermal atomizer