The Concentration Resolution of Complex Liquid Spectrometry Analysis and the Effect of Concentration Distribution
LI Gang1,3, ZHAO Zhe1,3, WANG Hui-quan1,3, LIN Ling1, ZHANG Bao-ju2, WU Xiao-rong2*
1. State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, Tianjin 300072, China 2. College of Physics & Electronic Information, Tianjin Normal University, Tianjin 300387, China 3. Tianjin Key Laboratory of Biomedical Detecting Techniques & Instruments, Tianjin University, Tianjin 300072, China
Abstract：In order to ensure the feasibility of complex liquid spectroscopy analysis, to analyze the accuracy gain of modeling by multi-wavelength, and to determine the appropriate distribution of concentration to obtain the high quality and universal quantitative analysis model, the precision of the detection of composition concentration by spectral analysis is illustrated through a error analysis which takes into account the following three contributions: spectral instrument noise, multi-wavelength modeling and the distribution of composition concentration. By concentration resolution analysis, the concentration resolution can be achieved when the spectrometer noise is available, but also the theoretical basis is provided to select a suitable spectrometer to meet the resolution requirement of quantitative analysis. Over-sampling technique indicates that the precision improvement by modeling with multi-wavelength can obtain higher concentration detection sensitivity. The sparse-dense-ratio and Euclidean distance of both measured and non-measured components provide the theoretic guidance for choosing the suitable concentration distribution which improves the model’s quality and reduces the prediction error of the sample set.
李 刚1，3，赵 喆1，3，王慧泉1，3，林 凌1，张宝菊2，吴晓荣2*. 复杂液体光谱法分析的浓度分辨率及浓度分布影响[J]. 光谱学与光谱分析, 2012, 32(04): 1077-1080.
LI Gang1,3, ZHAO Zhe1,3, WANG Hui-quan1,3, LIN Ling1, ZHANG Bao-ju2, WU Xiao-rong2*. The Concentration Resolution of Complex Liquid Spectrometry Analysis and the Effect of Concentration Distribution. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(04): 1077-1080.
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