摘要
文章详细介绍了X射线光电子能谱分峰操作的流程,对谱图中单峰和多峰的荷电位移、数据平滑、背景扣除、谱峰确认和多高斯拟合操作的数学流程进行了图解。我们认为,具有足够连续宽度和强度的峰值处才可以被判定为峰;谱图中可以进行含量定量的谱峰强度应在背景涨落的10倍以上;最后得到的分峰结果,还应进行统计检验。
The normative process for peak separation in X-ray photoelectron spectroscopy was discussed in detail. The adjustment of binding energy shift, data smoothing, baseline correction, peak determination,and multi-Gaussian function fitting were carried out in mathematics. Besides, the principles in peak separation for p, d, and f atomic orbitals were also reviewed. Peaks with enough width at half maximum and intensities can be considered as peaks. The quantitative limit for the peak intensity should be 10 times of the statistical fluctuation of the background signal, and proper statistic tests such as chi-square test and paired t test should be used.
出处
《大学化学》
CAS
2017年第8期53-59,共7页
University Chemistry
基金
国家自然科学基金(21471036
51073039)
关键词
背景扣除
谱峰指认
谱峰拟合
统计检验
Background subtraction
Peak determination
Peak fitting
Statistic test
