【摘要】 <正> 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;更多还原

【Abstract】 The nebulization efficiency in discrete samples and its main influential factors are studied. By logarithmic exchange and binary linear regression, an experiential equation is attained, which shows that both decreasing the uptake rate and volume increase the nebu-lization efficiency, and that the feed pressure of the carrier gas and air has less effect. In the determination of Mg, Ca and Cr, with decreasing the uptake volume the chemical interference is examined.更多还原