ICP-AES中光谱干扰的计算机模拟——Ⅱ.有效谱线轮廓宽度的计算

COMPUTER SIMULATION ,OF SPECTRAL INTERFERENCES IN INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION SPECTROSCOPY

在电感耦合等离子体原子发射光谱法(ICP-AES)中,利用计算机模拟光谱线对于光谱干扰的快速准确预测是一种有效的方法。在模拟过程中,主要步骤在于计算光谱线轮廓。前人在谱线轮廓的计算方面已进行过探讨,但所涉及的大多为谱线的物理轮廓。实际上,任何光谱分析均需通过一定的光谱仪器进行。分析粒子所发射的谱线除了在光源中因各种因素发生变宽外,在经过仪器光学系统时亦会发生变宽。

This paper describes the calculation of the widths of effective line profiles for the computer simulation of spectral interferences in ICP-AES. By assuming the effective line profiles having the Gaussian distribution, the spectral interferences of Fe matrix on Ⅶ292.402nm and Ⅶ292.464nm lines have been simulated. The simulated spectra agree quite well with the experimental ones which were obtained by a scanning spectrometer.