摘要
本文报道了利用导数光谱法校正ICP-AES中光谱干扰的潜力,讨论了导数光谱法的特点以及它比常用的干扰系数法和离峰分析法具有更大的适用性。
Numerical derivative techniques were evaluated experimentally with intefferent equivalent concentration as the criterion for compensation of spectral interferences in ICP-AES. Typical spectral interferences are covered, including flat background, sloped background, simple curved background and line overlaps with different overlapping degrees, which were defined as the ratio of the net interfering signal at the analysis wavelength to the peak signal of the interfering line. The results showed that the numerical derivative techniques work well for all the three types of background interference, and generally, are also effective for line overlaps with an overlapping degree of less than 0.8. Furthermore, the interferent equivalent concentrations in the derivative spectra are decreased by one to two order of magnitudes compared to those in the original spectra.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1992年第5期55-62,共8页
Spectroscopy and Spectral Analysis
基金
国家自燃科学基金
中国科学院数理化局的资助
关键词
光谱
干扰
分子光谱学
ICP-AES
Inductively coupled plasma
Atomic emission spectrometry
Spectral interference
Derivative spectrometry
