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Second-order multivariate models for the processing of standard-addition synchronous fluorescence–pH data. Application to the analysis of salicylic acid and its major metabolite in human urine
(Elsevier Science, 2014-01)
In the present work, we describe the determination of salicylic acid and its major metabolite, salicyluric acid, in spiked human urine samples, using synchronous fluorescence spectra measured in a flowinjection system with ...
A novel second-order standard addition analytical method based on data processing with multidimensional partial least-squares and residual bilinearization
(Elsevier Science, 2009-10)
In the presence of analyte-background interactions and a significant background signal, both second-order multivariate calibration and standard addition are required for successful analyte quantitation achieving the ...
Evaluation of the number of factors needed for residual bilinearization in BLLS and UPLS models to achieve the second-order advantage
(Elsevier Science BvAmsterdamHolanda, 2010)
Determination of ochratoxin A in coffee and tea samples by coupling second-order multivariate calibration and fluorescence spectroscopy
(Elsevier Science, 2020-11-01)
A new method to quantify the mycotoxin ochratoxin A (OTA) in coffee and tea samples is proposed based on second-order multivariate calibration and excitation-emission fluorescence matrix (EEFM) data. Experimental conditions ...
Contribution to second-order calibration based on multivariate curve resolution with and without previous chromatographic synchronization
(Elsevier Science, 2019-10-31)
Rotational ambiguity in the bilinear solutions provided by multivariate curve resolution - alternating least-squares (MCR-ALS) leads to an additional source of uncertainty in the estimation of analyte concentrations by ...
Comparison of the predictive ability of several second-order multivariate methods in the simultaneous determination of two therapeutic drugs in human urine
(Elsevier Science, 2012-01)
The aim of this paper is to study the applicability of second-order multivariate methods in the simultaneous determination of two therapeutic drugs in human urine samples. The studied drugs, irinotecan and thalidomide, are ...
On second-order calibration based on multivariate curve resolution in the presence of highly overlapped profiles
(Elsevier Science, 2020-02)
Multivariate curve resolution has been applied to both simulated and experimental data sets where high or even complete overlapping occurs between component profiles in one data mode. It is shown that rotational ambiguity ...
Determination of imidacloprid in water samples via photochemically induced fluorescence and second-order multivariate calibration
(Elsevier, 2015)
This paper presents a new method for the determination of imidacloprid in water samples; one of the most widely used neonicotinoid pesticides in the farming industry. The method is based on the measurement of excitation-emission ...
Determination of imidacloprid in water samples via photochemically induced fluorescence and second-order multivariate calibration
(Elsevier, 2015)
© 2014 Elsevier B.V. All rights reserved. This paper presents a new method for the determination of imidacloprid in water samples; one of the most widely used neonicotinoid pesticides in the farming industry. The method ...