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火焰原子吸收光谱法微量脉冲进样技术,国内外已有很多报道。但对雾化效率的研究却很少,有关化学干扰的报道又有差异。本文研究了影响雾化效率的两个主要因素及其对化学干扰的影响。实验部分1.仪器与试剂:Pye Unicam SP9-800原子吸收分光光度计。微量脉冲进样装置和雾化效率测定装置(图1)。1mg/ml的铜钙镁铬标准溶液,其它试剂均属优级纯。2.测量条件:波长铜324.8nm,钙422.7nm,镁285.2nm,铬357.9nm;光谱通带0.5nm;
Flame atomic absorption spectrometry micro pulse injection technology, there are many reports at home and abroad. However, the research on the atomization efficiency is rare, and the reports about chemical interference are different. In this paper, two main factors affecting the efficiency of atomization and their effects on chemical interference are studied. Experimental Section 1. Instruments and Reagents: Pye Unicam SP9-800 atomic absorption spectrophotometer. Micro-pulse sampling device and atomization efficiency measuring device (Figure 1). 1mg / ml of copper, calcium, magnesium chromium standard solution, other reagents are excellent grade pure. 2. Measurement conditions: wavelength copper 324.8nm, calcium 422.7nm, magnesium 285.2nm, chromium 357.9nm; spectral passband 0.5nm;