Emulsions, dipsticks and membranes based on oxalic acid-treated nanocellulose for the detection of aqueous and gaseous HgCl2

Autores
Bastida, Gabriela Adriana; Aguado, Roberto J.; Fiol, Núria; Delgado-Aguilar, Marc; Zanuttini, Miguel Angel Mario; Galván, María Verónica; Tarrés, Quim
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Although cellulosic materials have been used as stabilizing agents for oil-in-water emulsions since the 1980s, their properties and the underlying mechanism are not universal regardless of the dispersed phase or of the treatments on cellulose. One case of unconventional organic phase is acetic acidcontaining chloroform, which is known to be a good solvent system for the preservation of dithizone. In turn, dithizone is a long-known chromogenic reagent for the colorimetric detection of HgCl2. However, its usefulness is limited by its fast degradation in polar solvents. For instance, its dissolution in ethanol and the subsequent impregnation of paper strips allowed to quantify aqueous HgCl2 reliably and quickly (5.4 – 27 mg L–1), but only if they were used along the first 24 h after dip coating. Furthermore, those strips could not be used for sublimated HgCl2. The dithizone/chloroform-in-water emulsions presented in this work overcame these limitations. We opted for oxalic acid-treated cellulose nanofibers (ox-CNFs) as stabilizer, aiming at a proper balance between amphiphilic character and electrostatic repulsion. In this sense, ox-CNFs attained good gel-forming ability with a low content of carboxylate groups. The minimum ox-CNF concentration required was 0.35 wt%, regardless of the proportion of chloroform. This consistency implied yield stress values above 0.7 Pa. Nanocellulose also provided film-forming capabilities, which were exploited to produce visually responsive dipsticks and membranes. While quantification and reproducibility were hampered by the increase in the complexity of the system, dithizone/ox-CNF films were still a valid option for HgCl2 detection, outperforming solution coating in terms of stability, blank signal, and selectivity.
Fil: Bastida, Gabriela Adriana. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina
Fil: Aguado, Roberto J.. Universidad de Girona; España
Fil: Fiol, Núria. Universidad de Girona; España
Fil: Delgado-Aguilar, Marc. Universidad de Girona; España
Fil: Zanuttini, Miguel Angel Mario. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
Fil: Galván, María Verónica. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
Fil: Tarrés, Quim. Universidad de Girona; España
Materia
Colorimetric detection
Dithizone
Heavy metals
Mercury(ii) chloride
Nanocellulose
Oxalic acid
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:11336/243933
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/243933
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Emulsions, dipsticks and membranes based on oxalic acid-treated nanocellulose for the detection of aqueous and gaseous HgCl2Bastida, Gabriela AdrianaAguado, Roberto J.Fiol, NúriaDelgado-Aguilar, MarcZanuttini, Miguel Angel MarioGalván, María VerónicaTarrés, QuimColorimetric detectionDithizoneHeavy metalsMercury(ii) chlorideNanocelluloseOxalic acidhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Although cellulosic materials have been used as stabilizing agents for oil-in-water emulsions since the 1980s, their properties and the underlying mechanism are not universal regardless of the dispersed phase or of the treatments on cellulose. One case of unconventional organic phase is acetic acidcontaining chloroform, which is known to be a good solvent system for the preservation of dithizone. In turn, dithizone is a long-known chromogenic reagent for the colorimetric detection of HgCl2. However, its usefulness is limited by its fast degradation in polar solvents. For instance, its dissolution in ethanol and the subsequent impregnation of paper strips allowed to quantify aqueous HgCl2 reliably and quickly (5.4 – 27 mg L–1), but only if they were used along the first 24 h after dip coating. Furthermore, those strips could not be used for sublimated HgCl2. The dithizone/chloroform-in-water emulsions presented in this work overcame these limitations. We opted for oxalic acid-treated cellulose nanofibers (ox-CNFs) as stabilizer, aiming at a proper balance between amphiphilic character and electrostatic repulsion. In this sense, ox-CNFs attained good gel-forming ability with a low content of carboxylate groups. The minimum ox-CNF concentration required was 0.35 wt%, regardless of the proportion of chloroform. This consistency implied yield stress values above 0.7 Pa. Nanocellulose also provided film-forming capabilities, which were exploited to produce visually responsive dipsticks and membranes. While quantification and reproducibility were hampered by the increase in the complexity of the system, dithizone/ox-CNF films were still a valid option for HgCl2 detection, outperforming solution coating in terms of stability, blank signal, and selectivity.Fil: Bastida, Gabriela Adriana. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; ArgentinaFil: Aguado, Roberto J.. Universidad de Girona; EspañaFil: Fiol, Núria. Universidad de Girona; EspañaFil: Delgado-Aguilar, Marc. Universidad de Girona; EspañaFil: Zanuttini, Miguel Angel Mario. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; ArgentinaFil: Galván, María Verónica. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; ArgentinaFil: Tarrés, Quim. Universidad de Girona; EspañaSpringer2024-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/243933Bastida, Gabriela Adriana; Aguado, Roberto J.; Fiol, Núria; Delgado-Aguilar, Marc; Zanuttini, Miguel Angel Mario; et al.; Emulsions, dipsticks and membranes based on oxalic acid-treated nanocellulose for the detection of aqueous and gaseous HgCl2; Springer; Cellulose (london); 31; 9; 5-2024; 5635-56510969-0239CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/10.1007/s10570-024-05950-5info:eu-repo/semantics/altIdentifier/doi/10.1007/s10570-024-05950-5info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:24:30Zoai:ri.conicet.gov.ar:11336/243933instacron: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:34982025-10-15 15:24:31.036CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Emulsions, dipsticks and membranes based on oxalic acid-treated nanocellulose for the detection of aqueous and gaseous HgCl2
title Emulsions, dipsticks and membranes based on oxalic acid-treated nanocellulose for the detection of aqueous and gaseous HgCl2
spellingShingle Emulsions, dipsticks and membranes based on oxalic acid-treated nanocellulose for the detection of aqueous and gaseous HgCl2
Bastida, Gabriela Adriana
Colorimetric detection
Dithizone
Heavy metals
Mercury(ii) chloride
Nanocellulose
Oxalic acid
title_short Emulsions, dipsticks and membranes based on oxalic acid-treated nanocellulose for the detection of aqueous and gaseous HgCl2
title_full Emulsions, dipsticks and membranes based on oxalic acid-treated nanocellulose for the detection of aqueous and gaseous HgCl2
title_fullStr Emulsions, dipsticks and membranes based on oxalic acid-treated nanocellulose for the detection of aqueous and gaseous HgCl2
title_full_unstemmed Emulsions, dipsticks and membranes based on oxalic acid-treated nanocellulose for the detection of aqueous and gaseous HgCl2
title_sort Emulsions, dipsticks and membranes based on oxalic acid-treated nanocellulose for the detection of aqueous and gaseous HgCl2
dc.creator.none.fl_str_mv Bastida, Gabriela Adriana
Aguado, Roberto J.
Fiol, Núria
Delgado-Aguilar, Marc
Zanuttini, Miguel Angel Mario
Galván, María Verónica
Tarrés, Quim
author Bastida, Gabriela Adriana
author_facet Bastida, Gabriela Adriana
Aguado, Roberto J.
Fiol, Núria
Delgado-Aguilar, Marc
Zanuttini, Miguel Angel Mario
Galván, María Verónica
Tarrés, Quim
author_role author
author2 Aguado, Roberto J.
Fiol, Núria
Delgado-Aguilar, Marc
Zanuttini, Miguel Angel Mario
Galván, María Verónica
Tarrés, Quim
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Colorimetric detection
Dithizone
Heavy metals
Mercury(ii) chloride
Nanocellulose
Oxalic acid
topic Colorimetric detection
Dithizone
Heavy metals
Mercury(ii) chloride
Nanocellulose
Oxalic acid
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Although cellulosic materials have been used as stabilizing agents for oil-in-water emulsions since the 1980s, their properties and the underlying mechanism are not universal regardless of the dispersed phase or of the treatments on cellulose. One case of unconventional organic phase is acetic acidcontaining chloroform, which is known to be a good solvent system for the preservation of dithizone. In turn, dithizone is a long-known chromogenic reagent for the colorimetric detection of HgCl2. However, its usefulness is limited by its fast degradation in polar solvents. For instance, its dissolution in ethanol and the subsequent impregnation of paper strips allowed to quantify aqueous HgCl2 reliably and quickly (5.4 – 27 mg L–1), but only if they were used along the first 24 h after dip coating. Furthermore, those strips could not be used for sublimated HgCl2. The dithizone/chloroform-in-water emulsions presented in this work overcame these limitations. We opted for oxalic acid-treated cellulose nanofibers (ox-CNFs) as stabilizer, aiming at a proper balance between amphiphilic character and electrostatic repulsion. In this sense, ox-CNFs attained good gel-forming ability with a low content of carboxylate groups. The minimum ox-CNF concentration required was 0.35 wt%, regardless of the proportion of chloroform. This consistency implied yield stress values above 0.7 Pa. Nanocellulose also provided film-forming capabilities, which were exploited to produce visually responsive dipsticks and membranes. While quantification and reproducibility were hampered by the increase in the complexity of the system, dithizone/ox-CNF films were still a valid option for HgCl2 detection, outperforming solution coating in terms of stability, blank signal, and selectivity.
Fil: Bastida, Gabriela Adriana. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina
Fil: Aguado, Roberto J.. Universidad de Girona; España
Fil: Fiol, Núria. Universidad de Girona; España
Fil: Delgado-Aguilar, Marc. Universidad de Girona; España
Fil: Zanuttini, Miguel Angel Mario. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
Fil: Galván, María Verónica. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
Fil: Tarrés, Quim. Universidad de Girona; España
description Although cellulosic materials have been used as stabilizing agents for oil-in-water emulsions since the 1980s, their properties and the underlying mechanism are not universal regardless of the dispersed phase or of the treatments on cellulose. One case of unconventional organic phase is acetic acidcontaining chloroform, which is known to be a good solvent system for the preservation of dithizone. In turn, dithizone is a long-known chromogenic reagent for the colorimetric detection of HgCl2. However, its usefulness is limited by its fast degradation in polar solvents. For instance, its dissolution in ethanol and the subsequent impregnation of paper strips allowed to quantify aqueous HgCl2 reliably and quickly (5.4 – 27 mg L–1), but only if they were used along the first 24 h after dip coating. Furthermore, those strips could not be used for sublimated HgCl2. The dithizone/chloroform-in-water emulsions presented in this work overcame these limitations. We opted for oxalic acid-treated cellulose nanofibers (ox-CNFs) as stabilizer, aiming at a proper balance between amphiphilic character and electrostatic repulsion. In this sense, ox-CNFs attained good gel-forming ability with a low content of carboxylate groups. The minimum ox-CNF concentration required was 0.35 wt%, regardless of the proportion of chloroform. This consistency implied yield stress values above 0.7 Pa. Nanocellulose also provided film-forming capabilities, which were exploited to produce visually responsive dipsticks and membranes. While quantification and reproducibility were hampered by the increase in the complexity of the system, dithizone/ox-CNF films were still a valid option for HgCl2 detection, outperforming solution coating in terms of stability, blank signal, and selectivity.
publishDate 2024
dc.date.none.fl_str_mv 2024-05
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/11336/243933
Bastida, Gabriela Adriana; Aguado, Roberto J.; Fiol, Núria; Delgado-Aguilar, Marc; Zanuttini, Miguel Angel Mario; et al.; Emulsions, dipsticks and membranes based on oxalic acid-treated nanocellulose for the detection of aqueous and gaseous HgCl2; Springer; Cellulose (london); 31; 9; 5-2024; 5635-5651
0969-0239
CONICET Digital
CONICET
url http://hdl.handle.net/11336/243933
identifier_str_mv Bastida, Gabriela Adriana; Aguado, Roberto J.; Fiol, Núria; Delgado-Aguilar, Marc; Zanuttini, Miguel Angel Mario; et al.; Emulsions, dipsticks and membranes based on oxalic acid-treated nanocellulose for the detection of aqueous and gaseous HgCl2; Springer; Cellulose (london); 31; 9; 5-2024; 5635-5651
0969-0239
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://link.springer.com/10.1007/s10570-024-05950-5
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10570-024-05950-5
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 Springer
publisher.none.fl_str_mv Springer
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
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score 13.22299

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