Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics

Autores
Borgnino Bianchi, Laura Carolina; Pfaffen, Maria Valeria del Valle; Depetris Gallino, Pedro Jose; Palomeque, Miriam Edid
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper proposes a new automated spectrophotometric method for the simultaneous determination of phosphate and arsenate without pre-treatment, which is faster, simpler, less expensive and hazardous than other well-known methods used with water samples. Such method is based on the different kinetic characteristics of complex formation of phosphate and arsenate with ammonium molybdate. A flow system was used in order to achieve good mixing and to provide precise time control. All the measurements were performed at the isosbestic point wavelength (885 nm). Chemical variables were optimized by factorial design (ammonium molybdate 0.015 mol L -1, potassium antimony tartrate 1 × 10 -4 mol L -1, and sulphuric acid 0.7 mol L -1). An appropriate linear range for both analytes (0.50-8.00 μmol L -1), good inter-day reproducibility (4.9% [P] and 3.3% [P + As]) and a sample throughput of 6 h -1 were obtained. The detection limits are 0.4 μmol L -1 P and 0.19 μmol L -1 [P + As] (3.3 Sy/x). The method was validated. © 2011 Elsevier B.V. All rights reserved.
Fil: Borgnino Bianchi, Laura Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Pfaffen, Maria Valeria del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Depetris Gallino, Pedro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Palomeque, Miriam Edid. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Materia
Arsenate
Phosphate
Spectrophotometry
Stopped-Flow
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/53448
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/53448
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristicsBorgnino Bianchi, Laura CarolinaPfaffen, Maria Valeria del ValleDepetris Gallino, Pedro JosePalomeque, Miriam EdidArsenatePhosphateSpectrophotometryStopped-Flowhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1This paper proposes a new automated spectrophotometric method for the simultaneous determination of phosphate and arsenate without pre-treatment, which is faster, simpler, less expensive and hazardous than other well-known methods used with water samples. Such method is based on the different kinetic characteristics of complex formation of phosphate and arsenate with ammonium molybdate. A flow system was used in order to achieve good mixing and to provide precise time control. All the measurements were performed at the isosbestic point wavelength (885 nm). Chemical variables were optimized by factorial design (ammonium molybdate 0.015 mol L -1, potassium antimony tartrate 1 × 10 -4 mol L -1, and sulphuric acid 0.7 mol L -1). An appropriate linear range for both analytes (0.50-8.00 μmol L -1), good inter-day reproducibility (4.9% [P] and 3.3% [P + As]) and a sample throughput of 6 h -1 were obtained. The detection limits are 0.4 μmol L -1 P and 0.19 μmol L -1 [P + As] (3.3 Sy/x). The method was validated. © 2011 Elsevier B.V. All rights reserved.Fil: Borgnino Bianchi, Laura Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Pfaffen, Maria Valeria del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Depetris Gallino, Pedro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Palomeque, Miriam Edid. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaElsevier Science2011-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/53448Borgnino Bianchi, Laura Carolina; Pfaffen, Maria Valeria del Valle; Depetris Gallino, Pedro Jose; Palomeque, Miriam Edid; Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics; Elsevier Science; Talanta; 85; 3; 6-2011; 1310-13160039-9140CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pubmed/21807188info:eu-repo/semantics/altIdentifier/doi/10.1016/j.talanta.2011.06.001info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:25:12Zoai:ri.conicet.gov.ar:11336/53448instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:25:12.701CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics
title Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics
spellingShingle Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics
Borgnino Bianchi, Laura Carolina
Arsenate
Phosphate
Spectrophotometry
Stopped-Flow
title_short Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics
title_full Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics
title_fullStr Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics
title_full_unstemmed Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics
title_sort Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics
dc.creator.none.fl_str_mv Borgnino Bianchi, Laura Carolina
Pfaffen, Maria Valeria del Valle
Depetris Gallino, Pedro Jose
Palomeque, Miriam Edid
author Borgnino Bianchi, Laura Carolina
author_facet Borgnino Bianchi, Laura Carolina
Pfaffen, Maria Valeria del Valle
Depetris Gallino, Pedro Jose
Palomeque, Miriam Edid
author_role author
author2 Pfaffen, Maria Valeria del Valle
Depetris Gallino, Pedro Jose
Palomeque, Miriam Edid
author2_role author
author
author
dc.subject.none.fl_str_mv Arsenate
Phosphate
Spectrophotometry
Stopped-Flow
topic Arsenate
Phosphate
Spectrophotometry
Stopped-Flow
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This paper proposes a new automated spectrophotometric method for the simultaneous determination of phosphate and arsenate without pre-treatment, which is faster, simpler, less expensive and hazardous than other well-known methods used with water samples. Such method is based on the different kinetic characteristics of complex formation of phosphate and arsenate with ammonium molybdate. A flow system was used in order to achieve good mixing and to provide precise time control. All the measurements were performed at the isosbestic point wavelength (885 nm). Chemical variables were optimized by factorial design (ammonium molybdate 0.015 mol L -1, potassium antimony tartrate 1 × 10 -4 mol L -1, and sulphuric acid 0.7 mol L -1). An appropriate linear range for both analytes (0.50-8.00 μmol L -1), good inter-day reproducibility (4.9% [P] and 3.3% [P + As]) and a sample throughput of 6 h -1 were obtained. The detection limits are 0.4 μmol L -1 P and 0.19 μmol L -1 [P + As] (3.3 Sy/x). The method was validated. © 2011 Elsevier B.V. All rights reserved.
Fil: Borgnino Bianchi, Laura Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Pfaffen, Maria Valeria del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Depetris Gallino, Pedro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Palomeque, Miriam Edid. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
description This paper proposes a new automated spectrophotometric method for the simultaneous determination of phosphate and arsenate without pre-treatment, which is faster, simpler, less expensive and hazardous than other well-known methods used with water samples. Such method is based on the different kinetic characteristics of complex formation of phosphate and arsenate with ammonium molybdate. A flow system was used in order to achieve good mixing and to provide precise time control. All the measurements were performed at the isosbestic point wavelength (885 nm). Chemical variables were optimized by factorial design (ammonium molybdate 0.015 mol L -1, potassium antimony tartrate 1 × 10 -4 mol L -1, and sulphuric acid 0.7 mol L -1). An appropriate linear range for both analytes (0.50-8.00 μmol L -1), good inter-day reproducibility (4.9% [P] and 3.3% [P + As]) and a sample throughput of 6 h -1 were obtained. The detection limits are 0.4 μmol L -1 P and 0.19 μmol L -1 [P + As] (3.3 Sy/x). The method was validated. © 2011 Elsevier B.V. All rights reserved.
publishDate 2011
dc.date.none.fl_str_mv 2011-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/53448
Borgnino Bianchi, Laura Carolina; Pfaffen, Maria Valeria del Valle; Depetris Gallino, Pedro Jose; Palomeque, Miriam Edid; Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics; Elsevier Science; Talanta; 85; 3; 6-2011; 1310-1316
0039-9140
CONICET Digital
CONICET
url http://hdl.handle.net/11336/53448
identifier_str_mv Borgnino Bianchi, Laura Carolina; Pfaffen, Maria Valeria del Valle; Depetris Gallino, Pedro Jose; Palomeque, Miriam Edid; Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics; Elsevier Science; Talanta; 85; 3; 6-2011; 1310-1316
0039-9140
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pubmed/21807188
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.talanta.2011.06.001
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.891075

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