Výsledky vyhledávání - "M. Plaza Medina"

Trimethyltin chloride determination by hydride generation — gas phase molecular absorption spectrometry

Autor: M. T. Martínez-Soria, Jesús Sanz-Asensio, M Plaza-Medina, M Pérez-Clavijo

Publikováno v: Analytica Chimica Acta. 409:171-180

In this paper, a sequential experimental design is applied to optimize the determination of trimethyltin chloride (TMT) by hydride generation-gas phase molecular absorption spectrometry. The TMT is converted into gaseous trimethyltin hydride by addin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a346f76b5b3f6379b01027b723998f9
https://doi.org/10.1016/s0003-2670(99)00847-8

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Study of photodegradation of the pesticide ethiofencarb in aqueous and non-aqueous media, by gas chromatography–mass spectrometry

Autor: M. T. Martínez-Soria, Jesús Sanz-Asensio, M Pérez-Clavijo, M Plaza-Medina

Publikováno v: Journal of Chromatography A. 840:235-247

A comparative photodegradation kinetic study of ethiofencarb [2-ethylthiomethyl(phenyl)-N-methylcarbamate] in aqueous and non-aqueous media (hexane and methanol), is carried out. After irradiation, the aqueous samples are extracted with isobutyl meth

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::77c62b8bdf03eb78cf5ad4e86d04e529
https://doi.org/10.1016/s0021-9673(99)00219-8

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Determination of monomethylarsenous acid by hydride generation – gas phase molecular absorption spectrometry

Autor: M Plaza-Medina, M. T. Martínez-Soria, M. Pérez Clavijo, Jesús Sanz-Asensio

Publikováno v: Analytica Chimica Acta. 381:331-339

A method is described for the determination of dimethylarsinic and monomethylarsonous acids. The procedure involves NaBH4 reduction of the arsenic compounds to the corresponding gaseous arsines. After generation, the hydrides are collected in a liqui

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8e0e3a91170e5751cd7d1441ab9a9eef
https://doi.org/10.1016/s0003-2670(98)00750-8

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Decay study of pesticide residues in apple samples

Autor: J. Sanz Asensio, J. Galbán Bernal, M. Pérez Clavijo, M. Plaza Medina

Publikováno v: RIUR. Repositorio Institucional de la Universidad de La Rioja
instname
RIUR: Repositorio Institucional de la Universidad de La Rioja
Universidad de La Rioja (UR)

A method for monitoring pesticides in apple samples, including Soxhlet extraction, an evaporation step and capillary gas chromatography with nitrogen-phosphorus detection, is applied to a decay study of the carbamate pesticide ethiofencarb. The evapo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dda69221307a72bbdf2a2ec86669cc98
https://doi.org/10.1016/0021-9673(96)00150-1

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Simultaneous determination of organotin compounds by hydride generation-gas phase molecular absorption spectrometry

Autor: M. T. Martínez-Soria, Jesús Sanz-Asensio, M Plaza-Medina, M. Pérez Clavijo

Publikováno v: RIUR: Repositorio Institucional de la Universidad de La Rioja
Universidad de La Rioja (UR)
RIUR. Repositorio Institucional de la Universidad de La Rioja
instname

This study describes the determination of ternary mixtures of dimethyltin chloride (DMT), trimethyltin chloride (TMT) and monobutyltin chloride (BT) by hydride generation-gas phase molecular absorption spectrometry and the application of different ch

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d9026f8aec7aeb3dc167d181d070476
https://pubmed.ncbi.nlm.nih.gov/18968319

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Behaviour of Acephate and its metabolite Methamidophos in apple samples

Autor: M Pérez-Clavijo, Jesús Sanz-Asensio, M. T. Martínez-Soria, M Plaza-Medina, A. P. Martínez-Prado

Publikováno v: RIUR: Repositorio Institucional de la Universidad de La Rioja
Universidad de La Rioja (UR)
RIUR. Repositorio Institucional de la Universidad de La Rioja
instname

A study of the decay of acéphale in apple samples was carried out, including penetration studies and the transformation of acéphale in to its main metabolite, methamidophos. Sample treatment involved extraction with ethyl acetate and determination

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c20ef3b8fd3dea03f223f08b1d3bf40
https://investigacion.unirioja.es/documentos/5bbc69ccb750603269e821a7

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Evaluation of the decay of malathion, dichlofluanid and fenitrothion pesticides in apple samples, using gas chromatography

Autor: J. Galbán Bernal, M. Plaza Medina, M. Pérez Clavijo, J. Sanz Asensio, C. Sáenz Barrio

Publikováno v: RIUR. Repositorio Institucional de la Universidad de La Rioja
instname
RIUR: Repositorio Institucional de la Universidad de La Rioja
Universidad de La Rioja (UR)

In this paper an analytical study of the decay, both in the laboratory and on the trees of malathion, fenitrothion and dichlofluanid pesticides in apple samples is reported. ‘Safety periods’ (time which must elapse between pesticide spraying and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f58c5f8fe6ea47beea3cc8cd162ee6b
https://investigacion.unirioja.es/documentos/5bbc6972b750603269e81b5f

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