基于波数校准下傅里叶红外气体分析仪模型传递的研究

傅里叶变换红外光谱仪具有扫描速度快、分辨率高、波数精度高、灵敏度高和光谱范围宽等优点,因而应用于各个领域.但在实际应用中,由于仪器间的差异、仪器自身随时间的变化或者样品特性等问题,导致在一台仪器上建立的校正模型不能推广至其他仪器长期使用,使得傅里叶变换红外光谱法(FTIR)的应用受到了校正模型的限制,因此如何实现整机的...

Study on Model Transfer of Fourier Transform Infrared Spectrometer Based on Wavenumber Calibration

Fourier transform infrared spectrometer (FTIR) is used in various fields because of its advantages such as fast scanning speed, high resolution, high wavenumber accuracy, high sensitivity and wide spectral range. However, in practical applications, the calibration model established on one instrument cannot be extended to other long-term instruments due to the differences between instruments, the changes of instruments with time, and the characteristics of samples. As a result, the application of FTIR is limited by the correction model. Therefore, how to realize the wavenumber correction of the whole machine and to further realize the model transfer is one of the important research contents of the application of instrument. The wavenumber of the spectrum of the whole machine was corrected by the peak point of the water peak under the condition of high-resolution test. The results showed that the accuracy and consistency of wavenumbers are important factors for model transmission, and is beneficial to the application and development of FTIR.