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dc.contributor.author
Cerutti, Estela Soledad  
dc.contributor.author
Ferreira, Sergio Luis Costa  
dc.contributor.author
Gasquez, José Antonio  
dc.contributor.author
Olsina, Roberto Antonio  
dc.contributor.author
Martinez, Luis Dante  
dc.date.available
2020-02-18T20:16:25Z  
dc.date.issued
2004-08  
dc.identifier.citation
Cerutti, Estela Soledad; Ferreira, Sergio Luis Costa; Gasquez, José Antonio; Olsina, Roberto Antonio; Martinez, Luis Dante; Optimization of the preconcentration system of cadmium with 1(2-thiazolylazo)-p-cresol using a knotted reactor and flame atomic absorption spectrometric detection; Elsevier Science; Journal of Hazardous Materials; 112; 3; 8-2004; 279-283  
dc.identifier.issn
0304-3894  
dc.identifier.uri
http://hdl.handle.net/11336/97974  
dc.description.abstract
The present paper proposes an on-line preconcentration procedure for cadmium determination in drinking water samples. It is based on the precipitation of cadmium(II) ions on a knotted reactor (KR) using 1(2-thiazolylazo)-p-cresol (TAC) as complexing reagent. The optimization step was performed using a full factorial design involving the variables: pH, eluent concentration (nitric acid) and TAC concentration. The results of this experiment demonstrated that these variables at chosen levels are not statistically significant. Under optimized experimental established conditions, analytical parameters for the preconcentration method were: a detection limit of 40.0 ng/l, precision as relative standard deviation (RSD) of 1.2 and 1.0%, for cadmium concentration of 2.5 and 20.0 μg/l, respectively. The preconcentration factor considering the slopes of the analytical curves with and without preconcentration is 23 for a sample volume of 10 ml. This system shows a sampling frequency of 25 h-1. In order to check the accuracy, the standard reference material, NIST SRM 1643d trace elements in water was analyzed. A comparison, using t-test demonstrates that there is not significant difference among the achieved results with proposed method and the certified values. The addition/recovery experiments in the samples analyzed demonstrated the accuracy and applicability of the system developed for cadmium determination in water samples.  
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-nd/2.5/ar/  
dc.subject
CADMIUM DETERMINATION  
dc.subject
FAAS  
dc.subject
KNOTTED REACTOR  
dc.subject
ON-LINE PRECONCENTRATION  
dc.subject
WATER SAMPLES, 1(2-THIAZOLYLAZO)-P-CRESOL  
dc.subject.classification
Química Analítica  
dc.subject.classification
Ciencias Químicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Optimization of the preconcentration system of cadmium with 1(2-thiazolylazo)-p-cresol using a knotted reactor and flame atomic absorption spectrometric detection  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2020-02-13T20:04:50Z  
dc.journal.volume
112  
dc.journal.number
3  
dc.journal.pagination
279-283  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Cerutti, Estela Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina  
dc.description.fil
Fil: Ferreira, Sergio Luis Costa. Universidade Federal da Bahia; Brasil  
dc.description.fil
Fil: Gasquez, José Antonio. Universidad Nacional de San Luis; Argentina  
dc.description.fil
Fil: Olsina, Roberto Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Luis; Argentina  
dc.description.fil
Fil: Martinez, Luis Dante. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina  
dc.journal.title
Journal of Hazardous Materials  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jhazmat.2004.05.017  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0304389404002626