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<title>A new approach based on inversion of a partial least squares model searching for a preset analytical target profile. Application to the determination of five bisphenols by liquid chromatography with diode array detector</title>
<creator>Arce Antón, Mar</creator>
<creator>Ruiz Miguel, Santiago</creator>
<creator>Sanllorente Méndez, Silvia</creator>
<creator>Ortiz Fernández, Mª Cruz</creator>
<creator>Sarabia Peinador, Luis Antonio</creator>
<creator>Sánchez Pastor, Mª Sagrario</creator>
<subject>Process analytical technology</subject>
<subject>Partial least squares</subject>
<subject>Pareto optimality</subject>
<subject>Bisphenol AHPLC-DAD</subject>
<subject>Computational latent variable model inversion</subject>
<description>The paper shows a procedure for selecting the control method parameters (factors) to obtain a preset ‘analytical target profile’ when a liquid chromatographic technique is going to be carried out for the simultaneous determination of five bisphenols (bisphenol-A, bisphenol-S, bisphenol-F, bisphenol-Z and bisphenol-AF), some of them regulated by the European Union.&#xd;
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The procedure has three steps. The first consists of building a D-optimal combined design (mixture-process design) for the control method parameters, which are the composition of the ternary mobile phase and its flow rate. The second step is to fit a PLS2 model to predict six analytical responses (namely, the resolution between each pair of consecutive peaks, and the initial and final chromatographic time) as a function of the control method parameters. The third final step is the inversion of the PLS2 model to obtain the conditions needed for attaining a preset analytical target profile.&#xd;
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The computational inversion of the PLS2 prediction model looking for the Pareto front of these six responses provides a set of experimental conditions to conduct the chromatographic determination, specifically 22% of water, mixed with 58% methanol and 20% of acetonitrile, keeping the flow rate at 0.66 mL min−1. These conditions give a chromatogram with retention times of 2.180, 2.452, 2.764, 3.249 and 3.775 min for BPS, BPF, BPA, BPAF and BPZ, respectively, and excellent resolution among all the chromatographic peaks.&#xd;
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Finally, the analytical method is validated under the selected experimental conditions, in terms of trueness and precision. In addition, the detection capability for the five bisphenols were: 596, 334, 424, 458 and 1156 μg L−1, with probabilities of false positive and of false negative equal to 0.05.</description>
<date>2021-03-01</date>
<date>2021-03-01</date>
<date>2021</date>
<type>info:eu-repo/semantics/article</type>
<identifier>0003-2670</identifier>
<identifier>http://hdl.handle.net/10259/5631</identifier>
<identifier>10.1016/j.aca.2021.338217</identifier>
<language>eng</language>
<relation>Analytica Chimica Acta. 2021, V. 1149, 338217</relation>
<relation>https://doi.org/10.1016/j.aca.2021.338217</relation>
<relation>info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2017-88894-R/ES/NUEVAS HERRAMIENTAS QUIMIOMETRICAS CON VARIABLES LATENTES PARA LA TOMA DE DECISIONES EN TECNOLOGIA ANALITICA DE PROCESOS Y EN CONTEXTOS REGULADOS DE SEGURIDAD ALIMENTARIA</relation>
<relation>info:eu-repo/grantAgreement/Junta de Castilla y León//BU052P20//Nuevos desarrollos metodológicos del diseño de experimentos para análisis químicos, bioquímicos y en tecnología analítica de procesos</relation>
<rights>http://creativecommons.org/licenses/by-nc-nd/4.0/</rights>
<rights>info:eu-repo/semantics/openAccess</rights>
<rights>Attribution-NonCommercial-NoDerivatives 4.0 Internacional</rights>
<publisher>Elsevier</publisher>
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