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Developing a four-dimensional voltammetry as a powerful electroanalytical methodology for simultaneous determination of three colorants in the presence of an uncalibrated interference
(Elsevier Science, 2019-04)
In the present study, we have developed a novel electroanalytical method based on coupling of four-way multivariate calibration (MVC) models with third-order differential pulse voltammetric (DPV) data for simultaneous ...
Multidimensional voltammetry: Four-way multivariate calibration with third-order differential pulse voltammetric data for multi-analyte quantification in the presence of uncalibrated interferences
(Elsevier Science, 2015-11)
A four-way multivariate calibration approach based on the combination of differential pulse voltammetric (DPV) data and four-way algorithms is described for the first time. To achieve this goal, the DPV response of each ...
Analytical approach for the simultaneous determination of quinolones in edible animal products. Modeling pH–modulated fluorescence excitation–emission matrices four–way arrays
(Elsevier Science, 2019-01)
This paper describes a novel procedure for the simultaneous determination of four quinolones pipemidic acid, enoxacin, marbofloxacin and enrofloxacin in different edible animal tissues. It is based on third–order data ...
Pesticide residues in fruits and vegetables: High-order calibration based on spectrofluorimetric/pH data
(Elsevier Science, 2019-09)
The aim of the present work was to quantify simultaneously four pesticides, thiabendazole, fuberidazole, carbaryl and naphthyl acetic acid, in vegetables and fruits, measuring excitation–emission fluorescence matrices in ...
Four-way multivariate calibration using ultra-fast High-Performance Liquid Chromatography with Fluorescence Excitation-Emission detection. Application to the direct analysis of chlorophylls a and b and pheophytins a and b in olive oils
(Elsevier, 2013-06)
A four-way multivariate calibration approach, based on the combination of ultra-fast high-performance liquid chromatographic data and four-way algorithms, is described for the first time. To achieve this goal, several ...
Highly sensitive quantitation of pesticides in fruit juice samples by modeling four-way data gathered with high-performance liquid chromatography with fluorescence excitation-emission detection
(Elsevier Science, 2016-07)
A study regarding the acquisition and analytical utilization of four-way data acquired by monitoring excitation-emission fluorescence matrices at different elution time points in a fast HPLC procedure is presented. The ...
Four-way kinetic-excitation-emission fluorescence data processed by multi-way algorithms. Determination of carbaryl and 1-naphthol in water samples in the presence of fluorescent interferents
(Elsevier Science, 2010-09)
Four-way data were obtained by recording the kinetic evolution of excitation-emission fluorescence matrices for samples containing the analytes carbaryl and 1-naphthol, two widely employed pesticides, in the concentration ...
Critical evaluation of third-order advantage with highly overlapped spectral signals. Determination of fluoroquinolones in fish-farming waters by fluorescence spectroscopy coupled to multivariate calibration
(2019)
In this work, the analytical performance of a third-order/four-way calibration is evaluated to model a highly overlapped system, where two spectral dimensions are extremely similar, and the results are then compared with ...
Using chemometric tools to investigate the quality of three- and four-way liquid chromatographic data obtained with two different fluorescence detectors and applied to the determination of quinolone antibiotics in animal tissues
(Elsevier Science, 2020-04)
A comparison of two multi-way methodologies is presented regarding the simultaneous quantitation of several analytes in complex samples. Both protocols are based on liquid chromatography with fluorescence detection, in the ...
Mínimos cuadrados parciales trilineales y mínimos cuadrados parciales concatenados, combinados con trilinealización residual: Nuevas herramientas quimiométricas para el análisis de datos instrumentales de cuatro vías
(Universidad de Granada, 2007)
Se desarrolla un nuevo algorítmo quimiométrico, mínimos cuadrados trilineales (TLLS) combinado con trilinealización residual (RTL), como una extension de una de las variantes de mínimos cuadrados bilineales (BLLS), en ...