Search Results - "Cruz Ortiz, M."

Detection of cold chain breaks using partial least squares-class modelling based on biogenic amine profiles in tuna by Reguera, Celia, Sanllorente, Silvia, Herrero, Ana, Sarabia, Luis A., Ortiz, M. Cruz

“…The maintenance of the cold chain is essential to ensure foodstuff conformity and safety. However, gaps in the cold chain may be expected so designing…”
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Optimization of the derivatization reaction and the solid-phase microextraction conditions using a D-optimal design and three-way calibration in the determination of non-steroidal anti-inflammatory drugs in bovine milk by gas chromatography–mass spectrometry by Arroyo, David, Ortiz, M. Cruz, Sarabia, Luis A.

“…An experimental design optimization is reported of an analytical procedure used in the simultaneous determination of seven non-steroidal anti-inflammatory…”
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Increased synthesis of α‐tocopherol, paramylon and tyrosine by Euglena gracilis under conditions of high biomass production by Rodríguez‐Zavala, J.S, Ortiz‐Cruz, M.A, Mendoza‐Hernández, G, Moreno‐Sánchez, R

“…Aims: To analyse the production of different metabolites by dark‐grown Euglena gracilis under conditions found to render high cell growth. Methods and Results:…”
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Determination and identification, according to European Union Decision 2002/657/EC, of malachite green and its metabolite in fish by liquid chromatography–tandem mass spectrometry using an optimized extraction procedure and three-way calibration by Arroyo, David, Ortiz, M. Cruz, Sarabia, Luis A., Palacios, Francisco

“…This paper reports a multiresponse optimization of an extraction procedure in the simultaneous determination of malachite green (MG) and its metabolite…”
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Experimental design for the optimization of the derivatization reaction in determining chlorophenols and chloroanisoles by headspace-solid-phase microextraction–gas chromatography/mass spectrometry by Morales, Rocío, Sarabia, Luis A., Sánchez, M. Sagrario, Ortiz, M. Cruz

“…•Tools to optimize a derivatization reaction and interpret 8 responses in conflict.•Tools to optimize a derivatization reaction of chlorophenols…”
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Ad-hoc blocked design for the robustness study in the determination of dichlobenil and 2,6-dichlorobenzamide in onions by programmed temperature vaporization-gas chromatography–mass spectrometry by Herrero, Ana, Reguera, Celia, Ortiz, M. Cruz, Sarabia, Luis A., Sánchez, M. Sagrario

“…•Robustness of a PTV-GC–MS procedure with 18 factors to analyze dichlobenil in onions.•A saturated design is blocked ad hoc avoiding aliasing the block with…”
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Usefulness of a PARAFAC decomposition in the fiber selection procedure to determine chlorophenols by means SPME-GC-MS by Morales, Rocío, Ortiz, M. Cruz, Sarabia, Luis A.

“…In this work, a procedure based on solid-phase microextraction and gas chromatography coupled with mass spectrometry is proposed to determine chlorophenols in…”
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Robust regression techniques A useful alternative for the detection of outlier data in chemical analysis by CRUZ ORTIZ, M, SARABIA, Luis A, HERRERO, Ana

“…The validation of an analytical procedure means the evaluation of some performance criteria such as accuracy, sensitivity, linear range, capability of…”
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D-optimal designs and N-way techniques to determine sulfathiazole in milk by molecular fluorescence spectroscopy by Morales, Rocío, Ortiz, M. Cruz, Sarabia, Luis A., Sánchez, M. Sagrario

“…[Display omitted] ► Fluorescence spectroscopy is used to determine sulfathiazole in milk. ► Optimization of the procedure is made by coupling a D-optimal…”
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Usefulness of parallel factor analysis to handle the matrix effect in the fluorescence determination of tetracycline in whey milk by Rodríguez, Noelia, Real, Blanca D., Cruz Ortiz, M., Sarabia, Luis A., Herrero, Ana

“…The determination of tetracycline by fluorescence spectrophotometry in complex matrices has some difficulties, because the presence of other compounds in the…”
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Study of robustness based on n-way models in the spectrofluorimetric determination of tetracyclines in milk when quenching exists by Rodríguez, Noelia, Ortiz, M. Cruz, Sarabia, Luis A.

“…An important step in the validation of an analytical procedure is the study of its robustness. In the case of spectrofluorimetric determinations, quenching…”
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Three-way models and detection capability of a gas chromatography–mass spectrometry method for the determination of clenbuterol in several biological matrices: the 2002/657/EC European Decision by Garcı́a, Inmaculada, Sarabia, Luis, Cruz Ortiz, M., Manuel Aldama, J.

“…Clenbuterol has been extracted by mixed solid-phase extraction from two biological matrices (bovine hair and urine) and detected by GC/MS (selected ion…”
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Advances in methodology for the validation of methods according to the International Organization for Standardization: Application to the determination of benzoic and sorbic acids in soft drinks by high-performance liquid chromatography by Garcı́a, Inmaculada, Ortiz, M.Cruz, Sarabia, Luis, Vilches, Carmen, Gredilla, Elisa

“…Robust chemometric techniques such as least median of squares regression, H15 Huber estimator and Lenth’s method are fundamental tools in the validation of…”
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Sensitivity and specificity of PLS-class modelling for five sensory characteristics of dry-cured ham using visible and near infrared spectroscopy by Ortiz, M. Cruz, Sarabia, Luis, García-Rey, Raquel, de Castro, M. Dolores Luque

“…The two objectives of this work were to evaluate near infrared reflectance spectroscopy (NIR) as a tool for on-line classification of dry-cured ham samples…”
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Optimization of a FIA system with amperometric detection by means of a desirability function Determination of sulfadiazine, sulfamethazine and sulfamerazine in milk by REGUERA, Celia, CRUZ ORTIZ, M, HERRERO, Ana, SARABIA, Luis A

“…A sensitive and cheap FIA, with amperometric detection, analytical procedure is developed in this paper to determine sulfadiazine, sulfamethazine and…”
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Methodology of multicriteria optimization in chemical analysis: Some applications in stripping voltammetry by CRUZ ORTIZ, M, HERRERO, Ana, SANLLORENTE, Silvia, REGUERA, Celia

“…Multicriteria optimization, widely used in engineering, does not much used in the optimization of analytical signals. The aim of this paper is to show the…”
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Optimization of the chromatographic conditions for the determination of hormones by gas chromatography with mass spectrometry detection by García, Inmaculada, Sarabia, Luis A., Ortiz, M. Cruz, Aldama, J. Manuel

“…A gas chromatographic method with mass spectrometry detection (GC/MS) has been developed for the analysis of eight hormones: diethylstilbestrol, hexestrol,…”
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Optimization of headspace experimental factors to determine chlorophenols in water by means of headspace solid-phase microextraction and gas chromatography coupled with mass spectrometry and parallel factor analysis by Morales, Rocío, Cruz Ortiz, M., Sarabia, Luis A.

“…[Display omitted] ► D-optimal design allows the reduction of experiments from 48 to 18 maintaining the precision. ► A procedure based on HS-SPME–GC/MS to…”
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Identification and quantification of enrofloxacine in poultry feeding water through excitation emission fluorescence and three-way PARAFAC calibration by Giménez, Diego, Sarabia, Luis A, Ortiz, M Cruz

“…In this work an excitation emission molecular fluorescence technique with PARAFAC calibration is proposed for enrofloxacine determination in feeding water from…”
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Robust and non-parametric statistics in the evaluation of figures of merit of analytical methods. Practices for students by Cruz Ortiz, M, Herrero, Ana, Sanllorente, Silvia, Reguera, Celia

“…A set of laboratory practices is proposed in which evaluation of the quality of the analytical measurements is incorporated explicitly by applying…”
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