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dc.contributor.author
Farías, Silvia S.
dc.contributor.author
Londonio, Juan Agustín
dc.contributor.author
Quintero, Cesar Eugenio
dc.contributor.author
Befani, Romina
dc.contributor.author
Soro, Mariano
dc.contributor.author
Smichowski, Patricia Nora
dc.date.available
2018-02-28T19:43:28Z
dc.date.issued
2015-05
dc.identifier.citation
Farías, Silvia S.; Londonio, Juan Agustín; Quintero, Cesar Eugenio; Befani, Romina; Soro, Mariano; et al.; On-line speciation and quantification of four arsenical species in rice samples collected in Argentina using a HPLC-HG-AFS coupling; Elsevier Science; Microchemical Journal; 120; 5-2015; 34-39
dc.identifier.issn
0026-265X
dc.identifier.uri
http://hdl.handle.net/11336/37485
dc.description.abstract
An investigation was carried out to explore further the analytical capabilities of the coupling high performance liquid chromatography (HPLC)-hydride generation (HG)-atomic fluorescence spectrometry (AFS) for the reliable determination of the four toxicologically relevant arsenical species namely, As(III), As(V), monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA) in rice. Fifty nine samples of rice of five different cultivars were collected in province of Entre Rios (Argentina). Samples were dried at 103±2°C and mild conditions were adopted for species extraction (0.28molL-1 HNO3 at 95±3°C for 90min). Method validation included, evaluation of linearity; limits of detection, 0.020μgg-1 for As(III) and 0.025μgg-1 for the other three species; precision (intermediate precision), 4% for As(III) and DMA, and 6% for the other two species; trueness (bias), 9% for As(III) and As(V) and 11% for the other two species, and uncertainty (obtained from validation data) varying from 9.5% for As(III) to 19% for As(V). Total arsenic concentrations ranged from 0.08 to 1.39mgkg-1. The mean concentrations of sum of the As species extracted and determined by HPLC-HG-AFS was approximately 99.7% of certified value for total As in NIST SRM "Rice flour". Levels of the four species in the analyzed samples were in the order DMA>As(III)>As(V)>MMA. Inorganic As (iAs) accounted for 28% of the As detected. DMA exhibited the highest levels, representing a 72% of total grain As on average.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Hplc-Hg-Afs
dc.subject
Method Validation
dc.subject
Mild Extraction
dc.subject
Rice
dc.subject
Speciation Analysis of As
dc.subject.classification
Otras Ciencias Químicas
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
On-line speciation and quantification of four arsenical species in rice samples collected in Argentina using a HPLC-HG-AFS coupling
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-02-28T14:13:52Z
dc.journal.volume
120
dc.journal.pagination
34-39
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Farías, Silvia S.. Comisión Nacional de Energía Atómica; Argentina
dc.description.fil
Fil: Londonio, Juan Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina
dc.description.fil
Fil: Quintero, Cesar Eugenio. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina
dc.description.fil
Fil: Befani, Romina. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina
dc.description.fil
Fil: Soro, Mariano. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Entre Ríos. Estación Experimental Agropecuaria Concepción del Uruguay; Argentina
dc.description.fil
Fil: Smichowski, Patricia Nora. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Microchemical Journal
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.microc.2014.12.010
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0026265X14002409
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