Influence of Sample Loading and Test Conditions on NIR Veracity and Study of Analysis Error Source
LI Jun-hui1, QIN Xi-yun2, ZHANG Wen-juan1, CAI Gui-min1, YANG Yu-hong2, ZHAO Long-lian1, CHANG Zhi-qiang1, ZHAO Li-li1, ZHANG Lu-da3
1. College of Information and Electrical Engineering,China Agricultural University, Beijing 100094, China 2. Yunnan Tobacco Science Research Institute, Yuxi 653100, China 3. College of Science, China Agricultural University, Beijing 100094, China
Abstract：The influence of sample test conditions on the NIR veracity was studied with homemade grating diffuse NIR instrument using Yunnan flue-cured tobacco. Deducing analysis error was achieved by model self-emendation when a global NIR model was set up. Without regarding the influence of loading samples and test conditions, the test repetition error, re-loading error and samples tightness error, which were brought by instrument S/N, accounted for 50%, 30% and 20% of the total error, respectively. Depressing sample could reduce errors brought by sample tightness. Changes in test conditions could bring more analysis error, which was larger than the total of repetition error. These results theoretically explain the influence of sample test conditions on the NIR analysis veracity, which can provide basic theory data for farther improvement of homemade instrument and offer a new idea for resolving this problem.
李军会1,秦西云2,张文娟1,蔡贵民1,杨宇虹2,赵龙莲1,常志强1,赵丽丽1,张录达3 . 样品装样、测试条件等因素对近红外检测结果的影响与分析误差源比较研究[J]. 光谱学与光谱分析, 2007, 27(09): 1751-1753.
LI Jun-hui1, QIN Xi-yun2, ZHANG Wen-juan1, CAI Gui-min1, YANG Yu-hong2, ZHAO Long-lian1, CHANG Zhi-qiang1, ZHAO Li-li1, ZHANG Lu-da3 . Influence of Sample Loading and Test Conditions on NIR Veracity and Study of Analysis Error Source. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(09): 1751-1753.
