Complexometric determination of mercury based on a selective masking reaction

Autores
Romero, Mercedes; Guidi, Verónica; Ibarrolaza, Agustin; Castells, Cecilia Beatriz Marta
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Fil: Romero, Mercedes. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina
Fil: Guidi, Verónica. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina
Fil: Ibarrolaza, Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina
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
Materia
SECOND YEAR UNDERGRADUATE
ANALYTICAL CHEMISTRY
TITRATION ANALYSIS
EQUILIBRIA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/95498
Acceder
id CONICETDig_cb3dffe273d493dfad1d015f8a492ab7
oai_identifier_str oai:ri.conicet.gov.ar:11336/95498
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Complexometric determination of mercury based on a selective masking reactionRomero, MercedesGuidi, VerónicaIbarrolaza, AgustinCastells, Cecilia Beatriz MartaSECOND YEAR UNDERGRADUATEANALYTICAL CHEMISTRYTITRATION ANALYSISEQUILIBRIAhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1In 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.Fil: Romero, Mercedes. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; ArgentinaFil: Guidi, Verónica. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; ArgentinaFil: Ibarrolaza, Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; ArgentinaFil: 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; ArgentinaAmerican Chemical Society2009-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/95498Romero, 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; 1091-10930021-9584CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/ed086p1091info:eu-repo/semantics/altIdentifier/doi/10.1021/ed086p1091info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:41:09Zoai:ri.conicet.gov.ar:11336/95498instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:41:09.417CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Complexometric determination of mercury based on a selective masking reaction
title Complexometric determination of mercury based on a selective masking reaction
spellingShingle Complexometric determination of mercury based on a selective masking reaction
Romero, Mercedes
SECOND YEAR UNDERGRADUATE
ANALYTICAL CHEMISTRY
TITRATION ANALYSIS
EQUILIBRIA
title_short Complexometric determination of mercury based on a selective masking reaction
title_full Complexometric determination of mercury based on a selective masking reaction
title_fullStr Complexometric determination of mercury based on a selective masking reaction
title_full_unstemmed Complexometric determination of mercury based on a selective masking reaction
title_sort Complexometric determination of mercury based on a selective masking reaction
dc.creator.none.fl_str_mv Romero, Mercedes
Guidi, Verónica
Ibarrolaza, Agustin
Castells, Cecilia Beatriz Marta
author Romero, Mercedes
author_facet Romero, Mercedes
Guidi, Verónica
Ibarrolaza, Agustin
Castells, Cecilia Beatriz Marta
author_role author
author2 Guidi, Verónica
Ibarrolaza, Agustin
Castells, Cecilia Beatriz Marta
author2_role author
author
author
dc.subject.none.fl_str_mv SECOND YEAR UNDERGRADUATE
ANALYTICAL CHEMISTRY
TITRATION ANALYSIS
EQUILIBRIA
topic SECOND YEAR UNDERGRADUATE
ANALYTICAL CHEMISTRY
TITRATION ANALYSIS
EQUILIBRIA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
Fil: Romero, Mercedes. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina
Fil: Guidi, Verónica. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina
Fil: Ibarrolaza, Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina
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
description 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.
publishDate 2009
dc.date.none.fl_str_mv 2009-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/95498
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
0021-9584
CONICET Digital
CONICET
url http://hdl.handle.net/11336/95498
identifier_str_mv 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
0021-9584
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/ed086p1091
info:eu-repo/semantics/altIdentifier/doi/10.1021/ed086p1091
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844614441616801792
score 13.070432

Publicaciones similares