基于太赫兹技术的葛粉中苯甲酸的检测
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摘要
使用太赫兹时域光谱技术(THz-TDS)对葛粉中苯甲酸含量进行了定量分析。检测样品为有塑料包装袋的葛粉。对原始数据进行多元散射校正、基线校正、一阶导数、二阶导数等预处理,利用偏最小二乘(PLS)法对葛粉中苯甲酸的含量建立预测模型。检测结果显示:无塑料包装袋样品的模型决定因子为0.975,预测集的均方根误差(RMSEP)为1.126%;有塑料包装袋样品的模型决定因子为0.976,RMSEP为1.356%。
The terahertz time domain spectroscopy(THz-TDS)is used to quantitatively analyze the benzoic acid content in arrowroot,and the arrowroot is with a plastic bag.The original data are subjected to the pretreatments of multiple scattering correction,baseline correction,first derivative,second derivative,and so on.The partial least square(PLS)method is used to establish a prediction model for the detection of benzoic acid content in arrowroot.The detection results show that model-determining factor for samples without plastic bags is 0.975 and the predicted root mean square error(RMSEP)is 1.126%.In contrast,that for samples with plastic bags is 0.976 and the RMSEP is 1.356%.
The terahertz time domain spectroscopy(THz-TDS)is used to quantitatively analyze the benzoic acid content in arrowroot,and the arrowroot is with a plastic bag.The original data are subjected to the pretreatments of multiple scattering correction,baseline correction,first derivative,second derivative,and so on.The partial least square(PLS)method is used to establish a prediction model for the detection of benzoic acid content in arrowroot.The detection results show that model-determining factor for samples without plastic bags is 0.975 and the predicted root mean square error(RMSEP)is 1.126%.In contrast,that for samples with plastic bags is 0.976 and the RMSEP is 1.356%.
引文
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[2]Wang S H,Xu J Z,Wang L,et al.Application and prospect of THz technology[J].Physics,2001,30(10):612-615.王少宏,许景周,汪力,等.THz技术的应用及展望[J].物理,2001,30(10):612-615.
[3]Liu S G.Recent development of terahertz science and technology[J].China Basic Science,2006,8(1):7-12.刘盛纲.太赫兹科学技术的新发展[J].中国基础科学,2006,8(1):7-12.
[4]Zhang W T,Wang S Y,Zhan P P,et al.Method of identifying red wood based on terahertz time-domain spectroscopy[J].Acta Optica Sinica,2017,37(2):0230006.张文涛,王思远,占平平,等.基于太赫兹时域光谱技术的红木检测方法[J].光学学报,2017,37(2):0230006.
[5]Li J R,Li J S,Zhao X L.Terahertz time domain spectrometry for rapid qualitative detection of melamine in milk powder[J].Journal of China Jiliang University,2009,20(2):131-134.李建蕊,李九生,赵晓丽.太赫兹时域谱技术快速定性检测奶粉中的三聚氰胺[J].中国计量学院学报,2009,20(2):131-134.
[6]Lu C Y,Chen G X,Piao X Y,et al.Comparison of physicochemical properties of Pueraria starch from different sources[J].Food Science,2009,30(21):50-52.卢成瑛,陈功锡,卜晓英,等.不同来源葛根淀粉的理化性质比较[J].食品科学,2009,30(21):50-52.
[7]Liao H B,He Z F,Wang G C,et al.Pueraria′s research progress and prospects[J].Food Industry Technology,2003,24(2):81-83.廖洪波,贺稚非,王光慈,等.葛根的研究进展及展望[J].食品工业科技,2003,24(2):81-83.
[8]Guo Z,Fu H,Li X Q,et al.International comparison of benzoic acid content in orange juice by APMP.QM-P23[J].Chromatography,2013,31(12):1194-1200.国振,符惠,李秀琴,等.橙汁中苯甲酸含量测定的国际比对APMP.QM-P23[J].色谱,2013,31(12):1194-1200.
[9]Li J,Liu S J,Huang X L.Research progress on safety and detection methods of benzoic acid and sodium benzoate[J].Food&Oil,2012,25(9):49-51.李菊,刘淑君,黄雪琳.苯甲酸和苯甲酸钠安全性与检测方法研究进展[J].粮食与油脂,2012,25(9):49-51.
[10]Bi S Y,Zhu H,Xie B H.Research progress on detection methods of benzoic acid in food safety[J].Anhui Agricultural Sciences,2017,45(15):100-103,107.毕思远,朱海,谢本华.食品安全中苯甲酸检测方法的研究进展[J].安徽农业科学,2017,45(15):100-103,107.
[11]Strickland A D,Batt C A.Detection of carbendazim by surface-enhanced Raman scattering using cyclodextrin inclusion complexes on gold nanorods[J].Analytical Chemistry,2009,81(8):2895-2903.
[12]Zhang F,Liu L P,Song M J,et al.Quantitative analysis of plasticizer based on terahertz time-domain spectroscopy[J].Laser&Optoelectronics Progress,2017,54(3):033002.张放,刘丽萍,宋茂江,等.基于太赫兹时域光谱的塑化剂定量分析[J].激光与光电子学进展,2017,54(3):033002.
[13]Liao X L,Liu Y L,Liu X H,et al.Experimental analysis of fiber material property based on terahertz wave[J].Laser&Optoelectronics Progress,2016,53(10):100607.廖晓玲,刘延雷,刘晓华,等.基于太赫兹波的纤维材料特性实验分析[J].激光与光电子学进展,2016,53(10):100607.
[14]Liu W T,Li J W,Sun Z H.Terahertz time domain spectroscopy and laser radar spectral detection error analysis and experimental verification[J].Spectroscopy and Spectral Analysis,2010,30(3):577-581.刘文涛,李景文,孙志慧.太赫兹时域光谱技术及激光雷达光谱探测误差分析与实验验证[J].光谱学与光谱分析,2010,30(3):577-581.
[15]Jia W L.Experimental and theoretical analysis of THz generated by GaAs photoconductive switches[D].Xi′an:Xi′an University of Technology,2007.贾婉丽.GaAs光电导开关产生太赫兹电磁波的实验及理论分析[D].西安:西安理工大学,2007.
[16]Zhang M,Cai H,Shen J L.Terahertz spectra of food additive tetrabutyl hydroquinone and its detection analysis[J].Spectroscopy and Spectral Analysis,2011,31(7):1809-1813.张曼,蔡禾,沈京玲.食品添加剂特丁基对苯二酚的太赫兹光谱及其检测分析[J].光谱学与光谱分析,2011,31(7):1809-1813.
[17]Yan Y L.Fundamentals and applications of near infrared spectroscopy[M].Beijing:China Light Industry Press,2005:8-39.严衍禄.近红外光谱分析基础与应用[M].北京:中国轻工业出版社,2005:8-39.
[18]Chu X L.Chemometrics and molecular spectroscopy[M].Beijing:Chemical Industry Press,2011:41-53.褚小立.化学计量学方法与分子光谱分析技术[M].北京:化学工业出版社,2011:41-53.
[19]Xu L,Shao X G.Methods of Chemometrics[M].2rd ed.Science Press,2004.许禄,邵学广.化学计量学方法[M].第二版.北京:科学出版社,2004.
[20]Chen T.Qualitative and quantitative detection of materials based on terahertz time-domain spectroscopy[D].Xi′an:Xidian University,2013.陈涛.基于太赫兹时域光谱的物质定性鉴别和定量分析方法研究[D].西安:西安电子科技大学,2013.
[21]Ouyang A G,Zhang Y,Cheng M J,et al.Determination of the content of ethanol in ethanol gasoline using mid-infrared spectroscopy[J].Chinese Optics,2017,10(6):752-759.欧阳爱国,张宇,程梦杰,等.中红外光谱技术对乙醇汽油乙醇含量的检测[J].中国光学,2017,10(6):752-759.