Identification and Measurement of Petroleum Pollutant by Three-Dimensional Matrix Fluorescence with Second-Order Calibration Methods

A highly sensitive three-dimensional excitation-emission fluorescence method was proposed to determine antihypertensives including valsartan and amlodipine besylate in human plasma with the aid of second-order calibration methods based on parallel factor analysis (PARAFAC) and alternating trilinear decomposition (ATLD) algorithms. Antihypertensives with weak fluorescent can be transformed into a strong fluorescent property by changing microenvironment in samples using micellar enhanced surfactant. Both the adopted algorithms with second-order advantage can improve the resolution and directly attain antihypertensives concentration even in the presence of potential strong intrinsic fluorescence from human plasma. The satisfactory results can be achieved for valsartan and amlodipine besylate in complicated human plasma. Furthermore, some statistical parameters and figures of merit were evaluated to investigate the performance of the proposed method, and the accuracy and precision of the proposed method were also validated by the elliptical joint confidence region (EJCR) test and repeatability analysis of intraday and interday assay. The proposed method could not only light a new avenue to directly determine valsartan or amlodipine besylate in human plasma, but also hold great potential to be extended as a promising alternative for more practical applications in the determination of weak fluorescent drugs.

Download Full-text

Interference-free determination of abscisic acid and gibberellin in plant samples using excitation-emission matrix fluorescence based on oxidation derivatization coupled with second-order calibration methods

Analytical Methods ◽

10.1039/b9ay00048h ◽

2009 ◽

Vol 1 (2) ◽

pp. 115 ◽

Cited By ~ 21

Author(s):

Yuan-Na Li ◽

Hai-Long Wu ◽

Jin-Fang Nie ◽

Shu-Fang Li ◽

Yong-Jie Yu ◽

...

Keyword(s):

Abscisic Acid ◽

Second Order ◽

Excitation Emission Matrix ◽

Plant Samples ◽

Calibration Methods ◽

Second Order Calibration

Download Full-text

Fluorescence detection of polycyclic aromatic hydrocarbon pollutants based on second-order calibration methods

Optics and Precision Engineering ◽

10.3788/ope.20182609.2212 ◽

2018 ◽

Vol 26 (9) ◽

pp. 2212-2221

Author(s):

杜云 DU Yun ◽

郑亚南 ZHENG Ya-nan ◽

王书涛 WANG Shu-tao

Keyword(s):

Polycyclic Aromatic Hydrocarbon ◽

Aromatic Hydrocarbon ◽

Fluorescence Detection ◽

Second Order ◽

Calibration Methods ◽

Polycyclic Aromatic ◽

Second Order Calibration

Download Full-text

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

Journal of Chemistry ◽

10.1155/2014/858106 ◽

2014 ◽

Vol 2014 ◽

pp. 1-7 ◽

Cited By ~ 1

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.

Download Full-text