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Maria Ines Toral Ponce

Profesor Titular

UNIVERSIDD DE CHILE, FACULTAD DE CIENCIAS, DEPARTAMENTO DE QUÍMICA

Santiago, Chile

Quimica Analitica; Espectrofotometria; Electroanalisis; QuÃmica AnalÃtica; EspectrofotometrÃa derivada; ElectroquÃmica

Profesor Titular Part Time

UNIVERSIDAD DE CHILE

Ciencias

Sanytiago, Chile

1965 - A la fecha

Profesor Titular Part Time

Universidad de Chile

Santiago, Chile

1965 - A la fecha


Simultaneous determination of piperacillin and tazobactam in the pharmaceutical formulation tazonam® by derivative spectrophotometry Toral M.I.; Nova-Ramirez, F; Nacaratte, F Article JOURNAL OF THE CHILEAN CHEMICAL SOCIETY (2012)
SORPTION OF POLYBROMINATED DIPHENYL ETHERS IN BIOSOLID MODEL SAMPLES Rivas J.; Toral M.I.; Richter P. Article ISI SCIELO SCOPUS Journal of the Chilean Chemical Society (2012)
Determination of cobalt in water samples by photoacoustic spectroscopy with a solid-phase spectrophotometry approach using 3-(2-pyridyl)-5,6-bis (4-sulfophenyl)-1,2,4-triazine Saavedra R.; Soto C.; Yáñez, J Article ISI SCOPUS Microchemical Journal (2011)
Extraction and Determination of Oxytetracycline Hydrochloride and Oxolinic Acid in Fish Feed by Derivative Spectrophotometry of First Order Richter P. Article ISI SCOPUS Food Analytical Methods (2011)
FERROSPECTRAL SORBED ON DEAE SEPHADEX A-25 FOR THE SOLID PHASE SPECTROPHOTOMETRIC DETERMINATION OF IRON AND COBALT BY BATCH AND CONTINUOUS FLOW MODES Sanchez G.; Fernandez P.; Pizarro P.; Moncada, V; Rivas J.; Richter P. Article ISI SCIELO SCOPUS Journal of the Chilean Chemical Society (2011)
Simultaneous Determination of Albendazole and Praziquantel by Second Derivative Spectrophotometry and Multivariated Calibration Methods in Veterinary Pharmaceutical Formulation Soto C.; Contreras D.; Orellana S.; Yáñez, J Article ISI SCOPUS Analytical Sciences (2010)
Chromium retention properties of N-alkyl quaternized poly(4-vinylpyridine) Gonzalez-Navarrete, J; Leiva A.; Rios, HE Article ISI SCOPUS EUROPEAN POLYMER JOURNAL (2009)
Determination of Pd(II) content in catalysts and tap water samples via photoacoustic spectroscopy analysis of Pd(II)-3-[2 '-thiazolylazo]-2,6-diaminopyridine complex on solid phase Saavedra R.; Soto C.; Yáñez, J Article ISI SCOPUS JOURNAL OF HAZARDOUS MATERIALS (2009)
SIMULTANEOUS DETERMINATION OF DIBUCAINE AND CHLORPHENAMINE MALEATE USING DIFFERENT MATHEMATICAL SPECTROPHOTOMETRIC APPROACHES Soto C.; Contreras D.; Basáez L.; Freer J. Article ISI SCIELO SCOPUS JOURNAL OF THE CHILEAN CHEMICAL SOCIETY (2009)
STRATEGIES USED TO DEVELOP ANALYTICAL METHODS FOR SIMULTANEOUS DETERMINATION OF ORGANIC COMPOUNDS BY DERIVATIVE SPECTROPHOTOMETRY Saldias, OYM; Soto C. Article ISI QUIMICA NOVA (2009)
Strategies used to develop analytical methods for simultaneous determination of organic compounds by derivative spectrophotometry Estrategias en el desarrollo de métodos analíticos para la determinación stmultánea de compuestos orgánicos por espectrofotometría derivada Toral M.I.; Orellana S.; Saldias, M; Soto C. Article QUIMICA NOVA (2009)
Determination of iron in water samples by adsorptive stripping voltammetry with a bismuth film electrode in the presence of 1-(2-piridylazo)-2-naphthol Segura R.; Arancibia V. Article ISI SCOPUS Talanta (2008)
SIMULTANEOUS DETERMINATION OF ACETAMINOPHEN AND TRAMADOL BY SECOND DERIVATIVE SPECTROPHOTOMETRY Toral, Maria; Rivas, Jorge; Saldias, Marta; Soto, Cesar; Orellana, Sandra Article JOURNAL OF THE CHILEAN CHEMICAL SOCIETY (2008)
A new Cu(II)- 5-(4-sulphophenylazo)-8-aminoquinoline complex used for copper determination in presence of gold and silver in water and mineral samples Morales L.; Toral M.I.; Alvarez M.J. Article SCOPUS Talanta (2007)
ANYL 99-Determination of fe (III) in sea water samples by adsorptive stripping voltammetry with 1-(2-pyridylazo)-2-naphthol using a bismuth film electrode Segura R.; Toral M.; Arancibia V. Article ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY (2007)
Simultaneous determination of Au(III) and Cu(II) with 1-phenyl-1,2-propanedione-2-oximethiosemicarbazone (PPDOT) on solid phase Morales L. Article ISI SCOPUS Minerals Engineering (2007)
Simultaneous determination of Cu(II) and Ag(I) on SP sephadex C25 as complexes with 1-phenyl-1,2-propanedione-2-oximethiosemicarbazone by derivative spectrophotometry Morales L. Article ISI SCOPUS JOURNAL OF AOAC INTERNATIONAL (2007)
Simultaneous determination of iron and copper in pregnant liquid solutions Paipa C.; Poblete E. Article ISI SCOPUS Minerals Engineering (2006)
Subcritical water extraction and determination of nifedipine in pharmaceutical formulations Richter P.; Toledo C. Article ISI SCOPUS JOURNAL OF AOAC INTERNATIONAL (2006)
Arsenic speciation in water samples containing high levels of copper: removal of copper interference affecting arsine generation by continuous flow solid phase chelation Narvaez J.; Richter P. Article ISI SCOPUS ANALYTICAL AND BIOANALYTICAL CHEMISTRY (2005)
Comparative study of alternative methods for the simultaneous determination of Fe+3 and Fe+2 in leaching solutions and in acid mine drainages Paipa C.; Mateo, M; Godoy I.; Poblete E.; Vargas T. Article ISI SCOPUS Minerals Engineering (2005)
Simultaneous determination of N-butylscopolamine and oxazepam in pharmaceutical formulations by first-order digital derivative spectrophotometry Article ISI JOURNAL OF AOAC INTERNATIONAL (2005)
Synthesis and characterization of organocyclophosphazene-silica composites: new materials able to retain metal complexes Barbosa, M; Diaz C.; Retuert, J; Martinez Y. Article ISI SCOPUS JOURNAL OF MATERIALS CHEMISTRY (2005)
SCREENING OF SOME TRANSITION METAL IONS AND QUANTITATIVE DETERMINATION OF COPPER, CADMIUM AND ZINC BY SOLID PHASE DERIVATIVE SPECTROPHOTOMETRY Lara N.; Narvaez J.; Richter P. Article ISI SCIELO SCOPUS Journal of the Chilean Chemical Society (2004)
STUDY OF STABILITY PHYSICAL CHEMICAL OF 3-[2 -THIAZOLYLAZO]-2,6-DIAMINOPYRIDINE AND THE FORMATION OF 3-[N,N-ETHYL-MET-AZO]-2,6-DIAMINOPYRIDINE AS NEW LIGAND CHROMOPHORE Soto, Cesar; Toral, Maria Article JOURNAL OF THE CHILEAN CHEMICAL SOCIETY (2004)
Study of stability physical chemical of 3-[2?-thiazolylazo]-2,6- diaminopyridine and the formation of 3-[N,N-ethyl-metazo]-2,6-diaminopyridine as new ligand chromophore Toral M.I. Article SCOPUS JOURNAL OF THE CHILEAN CHEMICAL SOCIETY (2004)
Anodic stripping voltammetric determination of mercury in water by using a new electrochemical flow through cell Richter P.; Abbott B. Article ISI SCOPUS ELECTROANALYSIS (2002)
Simultaneous determination of estradiol and medroxyprogesterone acetate in pharmaceutical formulations by second-derivative spectrophotometry Soto C.; Richter P.; Tapia, AE Article ISI SCOPUS JOURNAL OF AOAC INTERNATIONAL (2002)
Simultaneous determination of iron and copper by third-derivative solid-phase spectrophotometry Lara N.; Gomez J.; Richter P. Article ISI SCOPUS ANALYTICAL LETTERS (2002)
SIMULTANEOUS DETERMINATION OF IRON AND RUTHENIUM BY PRECONCENTRATION ON SULFOPROPYL SEPHADEX CATION EXCHANGER Toral, Maria; Richter, Pablo; Paipa, Carolina; Narvaez, Jessica Article Microchemical Journal (2002)
Simultaneous determination of parathion and p-nitrophenol in vegetable tissues by derivative spectrophotometry Beattie A.; Santibanez C.; Richter P. Article ISI SCOPUS ENVIRONMENTAL MONITORING AND ASSESSMENT (2002)
Solid phase spectrophotometric determination of copper in water by using immobilized zincon in a Sephadex A25 resin Richter P.; Castro H. Article ISI SCOPUS ANALYTICAL LETTERS (2002)
Spectral study and simultaneous determination of sulfamethoxazole and trimethoprim by digital derivative spectrophotometry Estudio espectral y determinación simultanea de sulfametoxazol y trimetoprim por espectrofotometría derivada digital Toral M.I.; Lara N.; Torres C.; Richter P. Article SCOPUS BOLETIN DE LA SOCIEDAD CHILENA DE QUIMICA (2002)
DETERMINACION DE HIERRO EN FASE SOLIDA POR ESPECTROFOTOMETRIA DERIVADA DE SEGUNDO ORDEN TORAL, M. INÉS; Lara, Nelson; Gomez, Javier; Richter, Pablo Article SCIELO SCOPUS BOLETIN DE LA SOCIEDAD CHILENA DE QUIMICA (2001)
Simultaneous determination of ascorbic acid and acetylsalicylic acid in pharmaceutical formulations Lara N.; Richter P.; Tassara A.; Tapia, AE; Rodriguez C. Article ISI SCOPUS JOURNAL OF AOAC INTERNATIONAL (2001)
Simultaneous determination of platinum and palladium by second derivative spectrophotometry using 3-(2 '-thiazolylazo)-2,6-diaminopyridine as chromophore ligand Richter P.; Lara N.; Escudero, MT; Soto C. Article ISI SCOPUS ANALYTICAL LETTERS (2000)
Flow injection continuous liquid-liquid extraction using a hollow fiber membrane separator for determination of copper in water Richter P.; Toral M.I.; Manriquez R. Article ANALYTICAL LETTERS (1999)
Simultaneous determination of chlordiazepoxide and clidinium bromide in pharmaceutical formulations by derivative spectrophotometry Toral M.I.; Richter P.; Lara N.; Jaque P.; Soto C.; Saavedra M. Article INTERNATIONAL JOURNAL OF PHARMACEUTICS (1999)
Simultaneous determination of iron and ruthenium as ternary complexes by extractive second derivative spectrophotometry Toral M.I.; Richter P.; Hernandez J. Article Talanta (1999)
Simultaneous determination of o- and p-nitrophenol by first derivative spectrophotometry Toral M.I.; Richter P.; Cavieres M.; Gonzalez, W. Article ENVIRONMENTAL MONITORING AND ASSESSMENT (1999)
SISTEMA DE EXTRACCION LIQUIDO-LIQUIDO EN CONTINUO CON SEPARADOR DE FASES TIPO SANDWICH PARA LA DETERMINACION DE COBRE AL ESTADO DEL COMPLEJO COBRE(I)-BATOCUPROINA Richter P.; Toral M.I.; Manriquez R. Article SCIELO BOLETIN DE LA SOCIEDAD CHILENA DE QUIMICA (1999)
Determinacion simultanea de azomicina y ornidazol por espectrofotometria derivada de primer orden Toral M.I.; Soto C.; Jaque P.; Richter Y.P. Article BOLETIN DE LA SOCIEDAD CHILENA DE QUIMICA (1998)
Sistema de flujo continuo no segmentado con deteccion polarografica para la determinacion de ranitidina en formas farmaceuticas y orina Jaque-Olmedo P.; Toral M.I.; Richter P. Article BOLETIN DE LA SOCIEDAD CHILENA DE QUIMICA (1998)
Copper contents in mediterranean ecosystems in South America Serey, I.; Bustamante R. O.; Toral M.I.; Richter P.; Yates L.R. Article ENVIRONMENTAL MONITORING AND ASSESSMENT (1997)
Flow-through polarographic cell for flow-injection analysis. Determination of nifedipine in pharmaceutical formulations Richter P.; Toral M.I.; Quiroz G.; Jaque P. Article Laboratory Robotics and Automation (1997)
Simultaneous determination of copper and iron by second derivative spectrophotometry using mixtures of ligands Toral M.I.; Richter P.; Rodriguez C. Article Talanta (1997)
Cinetica diferencial de cobre y zinc con zincon en un sistema FIA/FLUJO interrumpido. Determinacion de cobre y zinc en latones Richter P.; Toral M.I.; Ubilla C.; Bunster M. Article BOLETIN DE LA SOCIEDAD CHILENA DE QUIMICA (1996)
Continuous flow injection reaction/stopped flow detection using derivative spectrophotometry. Determination of cobalt and iron in mixtures Richter P.; Toral M.I.; Hernandez P. Article ANALYTICAL LETTERS (1996)
Determinacion simultanea de paracetamol y codeina por espectrofotometria derivada de primer orden Toral M.I.; Richter P.; Martinez O. Article BOLETIN DE LA SOCIEDAD CHILENA DE QUIMICA (1996)
Determination of mefenamic acid and paracetamol by first derivative spectrophotometry Toral M.I.; Richter P.; Araya E.; Fuentes S. Article ANALYTICAL LETTERS (1996)
Flow injection with an integrated retention/photometric detection unit for the determination of iron in water Richter P.; Toral M.I. Article Microchemical Journal (1996)