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激发-发射荧光矩阵结合二阶校正方法检测湖水中多环芳烃 被引量:3
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作者 王忠东 王玉田 《光学精密工程》 EI CAS CSCD 北大核心 2019年第10期2089-2096,共8页
多环芳烃广泛存在于大气、土壤和水环境中,对动植物和人类有着严重危害。为了快速检测水环境中的痕量多环芳烃(Polycyclic Aromatic Hydrocarbons,PAHs),本文提出利用激发-发射荧光矩阵结合自加权交替归一残差拟合算法(Self-Weighted Al... 多环芳烃广泛存在于大气、土壤和水环境中,对动植物和人类有着严重危害。为了快速检测水环境中的痕量多环芳烃(Polycyclic Aromatic Hydrocarbons,PAHs),本文提出利用激发-发射荧光矩阵结合自加权交替归一残差拟合算法(Self-Weighted Alternating Normalized Residual Fitting Algorithm,SWANRF)检测湖水中的菲、蒽和荧蒽。与自加权交替三线性分解方法相比,SWANRF能够给出更满意的浓度预测结果,菲、蒽和荧蒽的平均回收率分别为(99.2±7.2)%,(101.7±7.7)%和(97.9±5.1)%;菲、蒽和荧蒽的预测均方根误差值分别为0.240,0.249和0.247μg/L。实验结果表明,文章提出的方法能够实现未知干扰物共存的湖水中痕量多环芳烃的快速检测,且方法可靠。 展开更多
关键词 激发-发射荧光矩阵 二阶校正 自加权交替归一残差拟合 多环芳烃
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Second-order calibration applied to quantification of two active components of Schisandra chinensis in complex matrix 被引量:1
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作者 Xiao-Hua Zhang, Hai-Long Wu, Jian-Yao Wang, Yao Chen, Yong-Jie Yu, Chong-Chong Nie, Chao Kang, De-Zhu Tu, Ru-Qin Yu State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China 《Journal of Pharmaceutical Analysis》 SCIE CAS 2012年第4期241-248,共8页
The effectiveness of traditional Chinese medicine (TCM) against various diseases urges more low cost, speed and sensitive analytical methods for investigating the phamacology of TCM and providing a theoretical basis f... The effectiveness of traditional Chinese medicine (TCM) against various diseases urges more low cost, speed and sensitive analytical methods for investigating the phamacology of TCM and providing a theoretical basis for clinical use. The potential of second-order calibration method was validated for the quantification of two effective ingredients of Schisandra chinensis in human plasma using spectrofluorimetry. The results obtained in the present study demonstrate the advantages of this strategy for multi-target determination in complex matrices. Although the spectra of the analytes are similar and a large number of interferences also exist, second-order calibration method could predict the accurate concentrations together with reasonable resolution of spectral profiles for analytes of interest owing to its ‘second-order advantage’. Moreover, the method presented in this work allows one to simply experimental procedure as well as reduces the use of harmful chemical solvents. 展开更多
关键词 Traditional Chinese medicine Second-order calibration Schizandrol A Schizandrin B self-weighted alternating normalized residue fitting (swanrf) algorithm alternating normaliza- tion-weighted error (ANWE) algorithm.
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