Optical Instruments, Volume. 44, Issue 5, 28(2022)
Comparative research of four quantitative Raman spectra calculation methods for multi-component gases
Figures & Tables(13)
Fig. 3. Calculation results of gases under different integration times
Fig. 4. Raman spectra of six gases accumulated 30 times at 1 s integration time
Fig. 6. Calculation results of gases under different integration times
Fig. 7. Calculation results of gases under different integration times
Table 1. Calculation results of peak value and peak area method
View tableView in ArticleTable 1. Calculation results of peak value and peak area method
气体成分 峰值法 峰面积法 重复性 均值 标准差 重复性 均值 标准差 氧气 0.39% 21.07% 0.080% 0.26% 20.99% 0.055% 氮气 0.25% 75.99% 0.190% 0.15% 75.92% 0.110% 二氧化碳 1.47% 2.99% 0.044% 0.97% 2.98% 0.029%
Table 2. Calculation results of Rayleigh scattering normalization method
View tableView in ArticleTable 2. Calculation results of Rayleigh scattering normalization method
气体成分 峰值 峰面积 重复性 均值 标准差 重复性 均值 标准差 氧气 0.14% 21.00% 0.030% 0.11% 20.98% 0.023% 氮气 0.14% 75.91% 0.110% 0.10% 75.87% 0.078% 二氧化碳 0.16% 3.00% 0.005% 0.12% 3.00% 0.004%
Table 3. Calculation results of nitrogen normalization method
View tableView in ArticleTable 3. Calculation results of nitrogen normalization method
气体成分 峰值 峰面积 重复性 均值 标准差 重复性 均值 标准差 氧气 0.13% 21.02% 0.028% 0.09% 21.01% 0.018% 氮气 0.04% 75.98% 0.031% 0.02% 75.99% 0.019% 二氧化碳 0.19% 3.00% 0.006% 0.12% 3.00% 0.004%
Table 4. Calculation results of the overall normalization method for the gas composition
View tableView in ArticleTable 4. Calculation results of the overall normalization method for the gas composition
气体成分 峰值 峰面积 重复性 均值 标准差 重复性 均值 标准差 氧气 0.28% 21.06% 0.059% 0.20% 21.01% 0.042% 氮气 0.09% 75.96% 0.070% 0.06% 76.00% 0.042% 二氧化碳 1.41% 2.99% 0.042% 0.95% 2.98% 0.029%
Table 5. The advantages and disadvantages of the four methods
View tableView in ArticleTable 5. The advantages and disadvantages of the four methods
方法 优点 缺点 峰值、峰 面积 计算简单、方便，不受体积分数100%的约束 稳定性、重复性差，无法适用于不同积分时间情况 瑞利散射归一化 稳定性、重复性较高，不受体积分数100%的约束 无法适用于不同积分时间情况 某一种气体成分归一化 稳定性、重复性最高 受到体积分数100%的约束，无法适用于不同积分时间的情况 待测气体成分整体归 一化 稳定性、重复性较高，可以适用于不同积分时间情况 受到体积分数100%的约束
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Shenhao YANG, Chuncai HOU, Weijing Zhao, Congran LI, Wei DENG. Comparative research of four quantitative Raman spectra calculation methods for multi-component gases[J]. Optical Instruments, 2022, 44(5): 28
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Category: TESTING TECHNOLOGY
Received: Dec. 14, 2021
Accepted: --
Published Online: Nov. 14, 2022
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