Multiway analysis through direct excitation-emission matrix imaging

Alcaráz, Mirta Raquel; Morzan, Ezequiel Martín; Sorbello, Cecilia; Goicoechea, Héctor C.; Etchenique, Roberto

doi:10.1016/j.aca.2018.07.069

Cited by 15 publications

(2 citation statements)

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“…This phenomenon occurs as a consequence of the lag between the elution and the fluorescence scanning rates. To cope with these limitations, researchers have implemented novel instrumental configurations [26], developed new spectrometers [27] and introduced new chemometric alternatives [28]. Escandar's group implemented a chromatographic setup that decreased the time dependence effect by reducing the linear flow rate of the mobile phase, incorporating a large inner-diameter tube between the column and the flow-cell [26].…”

Section: Third-order Datamentioning

confidence: 99%

“…In addition, due to the large chromatographic times and the slow chromatographic rate, reproducibility in the elution time among samples was observed leading to quadrilinear data. More recently, Alcaraz et al have presented an ultra-fast multi-way detector that enables measuring a complete EEM by bidimensional excitation and emission spatial dispersion [27]. This device, based on the use of a CCD camera, allows acquiring fluorescence images in the order of milliseconds.…”

Section: Third-order Datamentioning

confidence: 99%

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Chromatographic Applications in the Multi-Way Calibration Field

et al. 2021

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In this review, recent advances and applications using multi-way calibration protocols based on the processing of multi-dimensional chromatographic data are discussed. We first describe the various modes in which multi-way chromatographic data sets can be generated, including some important characteristics that should be taken into account for the selection of an adequate data processing model. We then discuss the different manners in which the collected instrumental data can be arranged, and the most usually applied models and algorithms for the decomposition of the data arrays. The latter activity leads to the estimation of surrogate variables (scores), useful for analyte quantitation in the presence of uncalibrated interferences, achieving the second-order advantage. Recent experimental reports based on multi-way liquid and gas chromatographic data are then reviewed. Finally, analytical figures of merit that should always accompany quantitative calibration reports are described.

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