Simultaneous determination of pre-emergence herbicides in environmental samples using HPLC-DAD combined with second-order calibration based on self-weighted alternating trilinear decomposition algorithm

2012 ◽  
Vol 4 (3) ◽  
pp. 685 ◽  
Author(s):  
Xiang-Dong Qing ◽  
Hai-Long Wu ◽  
Yuan-Na Li ◽  
Chong-Chong Nie ◽  
Jian-Yao Wang ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Environmental Samples ◽  
Second Order ◽  
Decomposition Algorithm ◽  
Trilinear Decomposition ◽  
Alternating Trilinear Decomposition ◽  
Second Order Calibration

Rapid determination of sulfamethoxazole and trimethoprim illegally added into health products using excitation-emission matrix fluorescence coupled with second-order calibration method

2021 ◽  
Author(s):  
Lu-Zhu Chen ◽  
Hai-Long Wu ◽  
WanJun Long ◽  
Tong Wang ◽  
Gao-Yan Tong ◽  
...  
Keyword(s):  
Analytical Method ◽  
Rapid Determination ◽  
Calibration Method ◽  
Trilinear Decomposition ◽  
Excitation Emission Matrix ◽  
Health Products ◽  
Alternating Trilinear Decomposition ◽  
Second Order Calibration ◽  
Eem Fluorescence

In this work, a simple and fast analytical method based on self-weighted alternating trilinear decomposition (SWATLD) algorithm coupled with excitation-emission matrix (EEM) fluorescence was developed for the simultaneous determination of...

scholarly journals A Comparison of Second-Order Calibration Methods Applied to Excitation-Emission Matrix Fluorescence Data

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Hui Chen ◽  
Zan Lin ◽  
Tong Wu ◽  
Chao Tan
Keyword(s):  
Performance Comparison ◽  
Second Order ◽  
Trilinear Decomposition ◽  
Excitation Emission Matrix ◽  
Calibration Methods ◽  
Mathematical Algorithms ◽  
Spectral Profiles ◽  
Second Order Calibration ◽  
Potential Tool

Due to the variety of second-order data being generated by modern instruments and various mathematical algorithms being available for analysis purposes, second-order calibration is gaining widespread acceptance by analytical community. It has the so-called second-order advantage; that is, it enables concentration and spectral profiles of sample components to be extracted even in the presence of unexpected interferences. A comprehensive performance comparison of alternating trilinear decomposition (ATLD) and its two variants, that is, alternating penalty trilinear decomposition (APTLD) and self-weighted trilinear decomposition (SWATLD), was presented in this paper. The experiment was based on the simultaneous determination of three dihydroxybenzenes, that is, catechol, hydroquinone, and resorcinol, by excitation-emission matrix fluorescence (EEMF) spectroscopy. Two special measures, that is, the consistency (COS) between the resolved and actual profiles and the mean of recovery, were used for evaluation. The optimal result was obtained by the APTLD model with five components. No perceptible difference on the speed of convergence was found. It indicates that EEMF linked with the APTLD algorithm can serve as a potential tool of quantifying dihydroxybenzenes simultaneously in environmental samples.

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