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dc.contributor.author
Pereyra, Marcelo Tomas
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dc.contributor.author
Lista, Adriana Guillermina
dc.contributor.author
Fernández Band, Beatriz Susana
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dc.date.available
2016-04-27T15:33:36Z
dc.date.issued
2013-02
dc.identifier.citation
Pereyra, Marcelo Tomas; Lista, Adriana Guillermina; Fernández Band, Beatriz Susana; Quantification of uncertainty in mercury wastewater analysis at different concentration levels and using information from proficiency test with a limited number of participants; Elsevier; Talanta; 111; 2-2013; 69-75
dc.identifier.issn
0039-9140
dc.identifier.uri
http://hdl.handle.net/11336/5413
dc.description.abstract
Measurement uncertainty is one of the most required parameters of analytical quality in environmental decision-making. Several approaches have been reported for estimating uncertainty in analytical measurements. The use of Proficiency Test (PT) is an alternative, not only for assessing the performance of individual analytical laboratories, but also for estimating the concordance of an analytical method and their measurement uncertainties. Here we develop a PT scheme for a limited number of analytical laboratories that took part in the analysis of total mercury in samples with complex matrix (chlor-alkali process wastewater effluent) in absence of references of the highest metrological hierarchy (e.g. primary method, primary CRM). Two in-house reference materials (IHRMs) were prepared at different levels of analyte concentration and the homogeneity required was verified for the intended use. A set of parametric and robust statistical tests were applied to evaluate the assigned values of each IHRM. Metrological compatibility assessment of PT results, evaluation of individual and global performance of the laboratories, and determination of uncertainty of the analytical measurements were evaluated in this restricted study scenario. Between-laboratory differences were found not significant (>=0.05). For both concentration levels we computed a relative standard uncertainty of 30 % for the total Hg content.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Proficiency Testing
dc.subject
Wastewater Analysis
dc.subject
Mercury Wastes
dc.subject
Measuremet Uncertainty
dc.subject
Metrological Compatibility
dc.subject
Limited Number of Participants
dc.subject.classification
Química Analítica
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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
Quantification of uncertainty in mercury wastewater analysis at different concentration levels and using information from proficiency test with a limited number of participants
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-05-06 15:52:43.262787-03
dc.journal.volume
111
dc.journal.pagination
69-75
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Pereyra, Marcelo Tomas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto de Química del Sur; Argentina. Universidad Nacional del Sur; Argentina
dc.description.fil
Fil: Lista, Adriana Guillermina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto de Química del Sur; Argentina. Universidad Nacional del Sur; Argentina
dc.description.fil
Fil: Fernández Band, Beatriz Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto de Química del Sur; Argentina. Universidad Nacional del Sur; Argentina
dc.journal.title
Talanta
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/pmid/23622527
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.talanta.2013.02.045
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0039914013001185
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.talanta.2013.02.045
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