Third order chromatographic-excitation–emission fluorescence data: Advances, challenges and prospects in analytical applications

Montemurro, Milagros; Siano, Gabriel G.; Alcaráz, Mirta Raquel; Goicoechea, Héctor C.

doi:10.1016/j.trac.2017.05.011

Cited by 26 publications

(18 citation statements)

References 43 publications

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“…Cabe señalar que la correcta elección del algoritmo para el modelado de estos datos es crítica y depende de la propiedad de multilinealidad generada en cada estrategia. 50,51 De acuerdo a sus características de multilinealidad, los datos de tercer orden pueden clasificarse en las siguientes categorías:…”

Section: Datos Cromatográficos De Tercer Ordenunclassified

“…c_ Datos no-cuadrilineales tipo 4 (donde hay correlación entre dos o más modos). 51,52 En los datos obtenidos con la estrategia 1…”

Section: Datos Cromatográficos De Tercer Ordenunclassified

“…Esto ocurre porque el monocromador de excitación requiere un tiempo adicional para cambiar la longitud de onda de excitación. La dependencia mutua entre los perfiles de excitación y de tiempo produce una pérdida de cuadrilinealidad de los datos, originando datos nocuadrilineales tipo 4 50,51. Los datos no-cuadrilineales de tipo 4 incluyen subtipos relacionados con el número de modos instrumentales y de muestra mutuamente dependientes.…”

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Excitation-emission fluorescence-kinetic data obtained by Fenton degradation. Determination of heavy-polycyclic aromatic hydrocarbons by four-way parallel factor analysis

Carabajal

Arancibia

Escandar

2017

Talanta

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For the first time, a simple and environmentally friendly third-order/four-way calibration was applied for the simultaneous determination of five heavy-polycyclic aromatic hydrocarbons (PAHs) in interfering environments. The kinetic evolution of the Fenton degradation of benzo[a]pyrene, dibenz[a,h]anthracene, benzo[b]fluoranthene, benzo[k]fluoranthene and benz[a]anthracene was followed by recording full excitation-emission fluorescence matrices (EEFMs) of the samples at different reaction times, obtaining third-order EEFM-kinetic (EEFM-K) data. The sensitivity of the method was increased by carrying out the reaction in the presence of methyl-β-cyclodextrin. The four-way parallel factor (PARAFAC) algorithm, which was used for data processing, exploits the second-order advantage, allowing analyte concentrations to be estimated even in the presence of an uncalibrated fluorescent background. The clear superiority of the applied approach in comparison with second-order/three-way calibration performed with unreacting EEFMs is demonstrated, using two sets of samples with foreign compounds with particular spectral profiles. In one of the latter sets, the existence of a third-order advantage was explored and discussed. The feasibility to directly determine parts-per-trillion concentration levels of PAHs after a very simple solid-phase extraction with C18 membranes is established with natural water samples containing uncalibrated constituents.

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Section: Datos Cromatográficos De Tercer Ordenunclassified

“…c_ Datos no-cuadrilineales tipo 4 (donde hay correlación entre dos o más modos). 51,52 En los datos obtenidos con la estrategia 1…”

Section: Datos Cromatográficos De Tercer Ordenunclassified

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Excitation-emission fluorescence-kinetic data obtained by Fenton degradation. Determination of heavy-polycyclic aromatic hydrocarbons by four-way parallel factor analysis

Carabajal

Arancibia

Escandar

2017

Talanta

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“…In the latter case, the approach consists in recording EEFMs as a function of the elution time; the main issue is to find adequate experimental and instrumental conditions that allow obtaining an adequate number of EEFMs containing satisfactory information in a short time. Very recently, Montemurro et al described analytical methodologies for the generation of third-order LC-EEFM data [8]. The authors discussed the following suitable strategies: (1) injecting the sample several times and recording the emission wavelength-elution time matrix, each time at a different excitation wavelength [9,10], and (2) collecting elution fractions at the end of the chromatographic procedure every few seconds, and then measuring EEFMs for each collected aliquot [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…Although this is the most attractive one, since neither flow interruption nor fraction collection are required, it was deficient in the mode in which it was implemented. This is due to the presence of strong dependence between the phenomena corresponding to the excitation and time modes [8].…”

Section: Introductionmentioning

confidence: 99%

On-line generation of third-order liquid chromatography–excitation-emission fluorescence matrix data. Quantitation of heavy-polycyclic aromatic hydrocarbons

Carabajal

Arancibia

Escandar

2017

Journal of Chromatography A

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For the first time, third-order liquid chromatography with excitation-emission fluorescence matrix detection (LC-EEFM) data were generated on-line and chemometrically processed for the simultaneous quantitation of the heavy-polycyclic aromatic hydrocarbons fluoranthene, pyrene, benz[a]anthracene, chrysene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, and dibenz[a,h]anthracene. The applied experimental strategy is very simple, and is based on the reduction of the linear flow rate by fitting a larger diameter connecting-tube between the column outlet and the fluorimetric detector. In this way, EEFMs were successfully recorded on-line, without involving a large total analysis time. Because in the studied system quadrilinearity was fulfilled, four-way parallel factor (PARAFAC) analysis was applied for data processing. The second-order advantage, which is an intrinsic property of data of at least second-order, allowed the quantification of the analytes in interfering media. Moreover, resolution of the system with a high degree of collinearity was achieved thanks to the third-order advantage. In addition to a selectivity improvement, third-order/four-way calibration increased the sensitivity, with limits of detection in the range of 0.4-2.9ngmL. After a solid-phase extraction procedure with C18 membranes, considerably lower concentrations (between 0.033-2.70ngmL) were determined in real waters, with most recoveries in the range 90-106%.

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Multiway analysis in process analytical chemistry

Pinto

2024

Data Handling in Science and Technology

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Third order chromatographic-excitation–emission fluorescence data: Advances, challenges and prospects in analytical applications

Cited by 26 publications

References 43 publications

Excitation-emission fluorescence-kinetic data obtained by Fenton degradation. Determination of heavy-polycyclic aromatic hydrocarbons by four-way parallel factor analysis

Excitation-emission fluorescence-kinetic data obtained by Fenton degradation. Determination of heavy-polycyclic aromatic hydrocarbons by four-way parallel factor analysis

On-line generation of third-order liquid chromatography–excitation-emission fluorescence matrix data. Quantitation of heavy-polycyclic aromatic hydrocarbons

Multiway analysis in process analytical chemistry

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