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8,16nm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16nm;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。
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.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2007年第2期411-413,共3页
Spectroscopy and Spectral Analysis
基金
云南省科技厅科技攻关重大项目(2002NG01)
"十五"国家科技攻关重大项目(2004BA210A03)
国家高技术研究发展计划"863"项目(2002AA248051
2002AA243011)资助
关键词
近红外
烤烟
扫描参数
采集间隔
NIR
Flue-cured tobacco, Scan parameters, Scan interval
