| 近红外光谱法结合化学计量学方法用于茶油真伪鉴别分析 |
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| 引用本文： | 张菊华,朱向荣,李高阳,单杨,尚雪波,黄绿红,帅鸣.近红外光谱法结合化学计量学方法用于茶油真伪鉴别分析[J].分析化学,2011,39(5):748-752. |
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| 作者姓名： | 张菊华 朱向荣 李高阳 单杨 尚雪波 黄绿红 帅鸣 |
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| 作者单位： | 湖南省食品测试分析中心,湖南省农业科学院,长沙,410125 |
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| 摘 要： | 采用近红外光谱透反射模式结合化学计量学方法对纯茶油进行真伪鉴别.收集并扫描了163个样品(合格97个,不合格66个),对样本进行光谱数据预处理优化及有效波段筛选.在5750～6000 cm-1波段处,光谱经过平滑,一阶导数以及自归一化后,采用无监督学习算法即主成分分析法(Principal component anal...
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| 关 键 词： | 茶油 近红外光谱 化学计量学 鉴别 |
Identification of Camellia Oils by Near Infrared Spectroscopy Combined with Chemometrics |
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| ZHANG Ju-Hua,ZHU Xiang-Rong,LI Gao-Yang,SHAN Yang,SHANG Xue-Bo,HUANG Lu-Hong,SHUAI Ming.Identification of Camellia Oils by Near Infrared Spectroscopy Combined with Chemometrics[J].Chinese Journal of Analytical Chemistry,2011,39(5):748-752. |
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| Authors: | ZHANG Ju-Hua ZHU Xiang-Rong LI Gao-Yang SHAN Yang SHANG Xue-Bo HUANG Lu-Hong SHUAI Ming |
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| Institution: | ZHANG Ju-Hua,ZHU Xiang-Rong,LI Gao-Yang,SHAN Yang,SHANG Xue-Bo,HUANG Lu-Hong,SHUAI Ming(Hunan Food Test and Analysis Centre,Hunan Academy of Agricultural Science,Changsha 410125) |
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| Abstract: | Near infrared spectroscopy(NIRS) in the transreflection mode combined with chemome-trics was used to identify Camellia oil.The samples set contained 163 spectra of qualified(n=97) and unqualified(n=66) have been collected and scanned,the spectral data were pretreated and selected for effective variables.In the wavenumber range 5750 cm-1 to 6000 cm-1,the optimal combination of pretreatments(smoothed,first derivative,and autoscaling) was adopted to process the spectra.Unsupervised classification-principal com... |
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| Keywords: | Camellia oil Near infrared spectroscopy Chemometrics Identify |
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