Raman spectroscopy is a unique tool for fast analysis of multicomponent gas media. In this work, we studied the features of application of this method for monitoring the syngas (mixture of CO + H2 + CH4 + CO2 + N2) composition. To determine concentrations, we used contour fit method, where the Raman spectrum of mixture is compared with a synthetically calculated spectrum. The effects of pressure changes and various exposure times on the accuracy of measurements are investigated. It was found that effect of pressure and environment on band contours results in measurement errors several times higher than the errors caused by deviations of the signal intensities.

中文翻译：

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EXPRESS：拉曼光谱在合成气成分测定中的应用

拉曼光谱是一种用于快速分析多组分气体介质的独特工具。在这项工作中，我们研究了该方法用于监测合成气（CO + H2 + CH4 + CO2 + N2 的混合物）成分的应用特点。为了确定浓度，我们使用了轮廓拟合方法，将混合物的拉曼光谱与合成计算的光谱进行比较。研究了压力变化和各种暴露时间对测量精度的影响。发现压力和环境对波段轮廓的影响导致测量误差比信号强度偏差引起的误差高几倍。