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dc.contributor.author
Quiroga, Sandra Lujan
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dc.contributor.author
Churio, Maria Sandra
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dc.contributor.author
Perissinotti, Luis José
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dc.date.available
2019-05-06T18:38:23Z
dc.date.issued
2002-01
dc.identifier.citation
Quiroga, Sandra Lujan; Churio, Maria Sandra; Perissinotti, Luis José; Determination of differential quantum yields in solution by electron paramagnetic resonance spectroscopy; Springer Wien; Applied Magnetic Resonance; 22; 1; 1-2002; 115-131
dc.identifier.issn
0937-9347
dc.identifier.uri
http://hdl.handle.net/11336/75633
dc.description.abstract
Quantitative kinetic studies on the photochemistry of paramagnetic species in solution may be carried out by electron paramagnetic resonance (EPR) spectroscopy. A cylindrical cell can be used as photochemical reactor, but the internal diameter should be less than 1.7 mm in order to achieve the resonance of an aqueous sample in an X-band (9-10 GHz) spectrometer. In this paper we present a detailed analysis of the fractions of incident light that are reflected, transmitted and absorbed by a liquid solution in a quartz cylindrical cell placed in the optical cavity of an X-band EPR spectrometer. Since the photolysis cell is irradiated perpendicularly to its axis, variable angles of incidence have been considered to calculate the transmission and reflection coefficients from Fresnel equations. Polarization of light has been also taken into account in the evaluation of the coefficients. The procedure proposed here is adequate for the evaluation of the absorbed light in the determination of quantum yields. The continuous photolysis at 366 nm of symmetric chlorine dioxide (OClO) in aqueous solution was considered as an example. The initial differential quantum yield obtained for OCIO photodecomposition in aqueous solution was Φ366 = 0.55±0.04.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer Wien
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Actinometry
dc.subject
Photolysis
dc.subject
Chlorine Dioxide
dc.subject
Photochemical Reactor
dc.subject.classification
Otras Ciencias Químicas
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dc.subject.classification
Ciencias Químicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Determination of differential quantum yields in solution by electron paramagnetic resonance spectroscopy
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-03-27T18:06:02Z
dc.journal.volume
22
dc.journal.number
1
dc.journal.pagination
115-131
dc.journal.pais
Austria
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dc.journal.ciudad
Viena
dc.description.fil
Fil: Quiroga, Sandra Lujan. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina
dc.description.fil
Fil: Churio, Maria Sandra. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina
dc.description.fil
Fil: Perissinotti, Luis José. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina
dc.journal.title
Applied Magnetic Resonance
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/BF03170527
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/BF03170527
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