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国产光栅近红外光谱仪扫描条件对检测结果的影响
引用本文:秦西云,李军会,杨宇虹,蔡贵民.国产光栅近红外光谱仪扫描条件对检测结果的影响[J].光谱学与光谱分析,2007,27(2):411-413.
作者姓名:秦西云  李军会  杨宇虹  蔡贵民
作者单位:1. 云南省烟草科学研究所,云南,玉溪,653100
2. 中国农业大学信息与电气工程学院,北京,100094
基金项目:云南省科技厅科技攻关重大项目 , 国家科技攻关项目 , 国家高技术研究发展计划(863计划)
摘    要:以云南优质烤烟为实验材料,在国产光栅漫反射型近红外仪器上,研究了采集间隔、开机时长、背景测量频率等扫描条件对近红外检测结果的影响.研究结果表明:8,16 nm的光谱数据采集间隔对近红外烤烟定量分析的影响不大,为提高采集速度确定该仪器的采集间隔为16 nm;建立了包含开机时长因素在内的模型,提高模型的适应性;该仪器具有基线漂移提示功能,从而确定仪器背景采集的频率,可以降低分析误差,提高检测结果的准确度.

关 键 词:近红外  烤烟  扫描参数  采集间隔
文章编号:1000-0593(2007)02-0411-03
收稿时间:2006-05-19
修稿时间:2006-10-15

Influence of Spectrometer Scanning Requirements in Homemade Grating Diffuse NIR Instrument on NIR Veracity
QIN Xi-yun,LI Jun-hui,YANG Yu-hong,CAI Gui-min.Influence of Spectrometer Scanning Requirements in Homemade Grating Diffuse NIR Instrument on NIR Veracity[J].Spectroscopy and Spectral Analysis,2007,27(2):411-413.
Authors:QIN Xi-yun  LI Jun-hui  YANG Yu-hong  CAI Gui-min
Institution:1. Yunnan Tobacco Science Research Institute, Yuxi 653100, China 2. College of Information and Electrical Engineering, China Agricultural University, Beijing 100094, China
Abstract:The influence of instrument parameters, such as scan internal, length of instrument run, frequency of scan background etc, on NIR veracity was studied with a homemade grating diffuse NIR instrument using Yunnan flue-cured tobacco. Resuits showed that scan interval, such as 8 nm or 16 nm, had no evident influence on NIR quantitative analysis. To improve scan speed, the scan interval the authors decided to use was 16 nm. NIR model was set up which could revise the influence of the length of instrument run. This instrument can clue on baseline shift to decide the frequency of background scanning, which can deduce NIR analysis error and improve NIR veracity.
Keywords:NIR  Flue-cured tobacco  Scan parameters  Scan interval
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