辉光放电阴极溅射、瞬变原子化／原子吸收光谱分析性能的研究（Ⅱ）

STUDIES ON THE ANALYTICAL PERFORMANCES OF CATHODIC SPUTTERING IN A GLOW DISCHARGE FOR ATOMIC ABSORPTION SPECTROMETRY HAVING THE TRANSIENT MODE OF ATOMIZATION (Ⅱ)

通过一些元素的测定，进一步研究了辉光放电阴极溅射、瞬变原子化／原子吸收光谱分析技术的如下分析性能：不同Ａｒ气压力下放电电流与放电电压的关系；放电电流、放电功率分别与吸光度的关系；石墨阴极空穴溅射时间对元素分析灵敏度的影响；分析校正曲线的线性范围：基体干扰等。试验表明；增加放电功率是提高分析灵敏度的关键；采用峰面积吸光度方式将大大扩展一些元素分析校正曲线的线性范围。

The analytical performances on the analytical technique of cathedic sputtering in a glow discharge for atomic absorption spectrometry having the transient mode of atondzation,such as, the relation between discharge current and discharge voltage in the case of different Argon gas pressure, the relations between discharge and absorbance as well as between discharge power and absorbance, the effect of sputtering time of cavity for graphite cathode on the analytical sensitivities of elements, the linear ranges of analytical calibration curves, matrix interferences, etc. havebeen investigated in this paper. The results of measurement showed that the increase of dischargepower was the key enhancing analytical sensitivity and the use of absorbance mode of peak areawould expand obviously the linear ranges of analytical calibration curves of some elements.