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dc.contributor.author
Romero, Mercedes
dc.contributor.author
Guidi, Verónica
dc.contributor.author
Ibarrolaza, Agustin
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dc.contributor.author
Castells, Cecilia Beatriz Marta
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dc.date.available
2020-01-21T21:44:17Z
dc.date.issued
2009-09
dc.identifier.citation
Romero, Mercedes; Guidi, Verónica; Ibarrolaza, Agustin; Castells, Cecilia Beatriz Marta; Complexometric determination of mercury based on a selective masking reaction; American Chemical Society; Journal Of Chemical Education; 86; 9; 9-2009; 1091-1093
dc.identifier.issn
0021-9584
dc.identifier.uri
http://hdl.handle.net/11336/95498
dc.description.abstract
In the first analytical chemistry course, students are introduced to the concepts of equilibrium in water solutions and classical (non-instrumental) analytical methods. Our teaching experience shows that "real samples" stimulate students' enthusiasm for the laboratory work. From this diagnostic, we implemented an optional activity at the end of the first analytical chemistry course. We suggested that the students propose a lab project that awakens their curiosity and perform it with the instructor's supervision. The project described here was one of the most interesting proposed experiments. The students' goal was to test the potential environmental leaching of mercury from common 12 V batteries that were improperly disposed, without following the specific environmental policies for this extremely harmful material. The battery labels did not specify the composition of electroactive ions. To simulate the disposal situation, the batteries were submerged in water for one month. The project consisted of an initial experimental design; a bibliographic search of classical methods for detection of the mercury ion; choice and optimization of the selected technique with standard solutions, pretreatment, and analysis of "real" samples; and conclusions. With these optional activities students are challenged to find a real-world problem and to solve a real analytical problem by thinking independently about a specific issue and searching literature about the proper analytical methods.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
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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
SECOND YEAR UNDERGRADUATE
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ANALYTICAL CHEMISTRY
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TITRATION ANALYSIS
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EQUILIBRIA
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
Complexometric determination of mercury based on a selective masking reaction
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-01-21T18:47:56Z
dc.journal.volume
86
dc.journal.number
9
dc.journal.pagination
1091-1093
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Romero, Mercedes. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina
dc.description.fil
Fil: Guidi, Verónica. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina
dc.description.fil
Fil: Ibarrolaza, Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina
dc.description.fil
Fil: Castells, Cecilia Beatriz Marta. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina
dc.journal.title
Journal Of Chemical Education
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/ed086p1091
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1021/ed086p1091
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