Silicate determination in sea water: Towards a reagentless electrochemical method
Silicate has been determined in sea water by four different electrochemical methods based on the detection of the silicomolybdic complex formed in acidic media by the reaction between silicate and molybdenum salts. The first two methods are based on the addition of molybdate and protons in a seawate...
Published in: | Marine Chemistry |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2007
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Subjects: | |
Online Access: | https://hal.science/hal-00177903 https://hal.science/hal-00177903/document https://hal.science/hal-00177903/file/Comtat_3079.pdf https://doi.org/10.1016/j.marchem.2007.05.002 |
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ftuniversailles:oai:HAL:hal-00177903v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
Silicate Chronoamperometry Voltammetry Molybdenum Reagentless method Drake Passage [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Silicate Chronoamperometry Voltammetry Molybdenum Reagentless method Drake Passage [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Lacombe, Marielle Garçon, Véronique Comtat, Maurice Oriol, Louise Sudre, Joël Thouron, Danièle Le Bris, Nadine Provost, Christine Silicate determination in sea water: Towards a reagentless electrochemical method |
topic_facet |
Silicate Chronoamperometry Voltammetry Molybdenum Reagentless method Drake Passage [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
Silicate has been determined in sea water by four different electrochemical methods based on the detection of the silicomolybdic complex formed in acidic media by the reaction between silicate and molybdenum salts. The first two methods are based on the addition of molybdate and protons in a seawater sample in an electrochemical cell. Cyclic voltammetry presents two reduction and two oxidation peaks giving four values of the concentration and therefore increasing the precision. Then chronoamperometry is performed on an electrode held at a constant potential. A semi-autonomous method has been developed based on the electrochemical anodic oxidation of molybdenum, the complexation of the oxidation product with silicate and the detection of the complex by cyclic voltammetry. This method is tested and compared with the classical colorimetric one during ANT XXIII/3 cruise across Drake Passage (January-February 2006). The detection limit is 1 μM and the deviation between both methods is less than 3% for concentrations higher than 10 μM. Finally a complete reagentless method with a precision of 2.6% is described based on the simultaneous formation of the molybdenum salt and protons in a divided electrochemical cell. This latter method should be very useful for developing a reagentless sensor suitable for long term in situ deployments on oceanic biogeochemical observatories. |
author2 |
Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Génie Chimique (LGC) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP) Université de Toulouse (UT) Laboratoire d'océanographie biologique de Banyuls (LOBB) Observatoire océanologique de Banyuls (OOB) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire Environnement Profond (LEP) Etudes des Ecosystèmes Profonds (EEP) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Lacombe, Marielle Garçon, Véronique Comtat, Maurice Oriol, Louise Sudre, Joël Thouron, Danièle Le Bris, Nadine Provost, Christine |
author_facet |
Lacombe, Marielle Garçon, Véronique Comtat, Maurice Oriol, Louise Sudre, Joël Thouron, Danièle Le Bris, Nadine Provost, Christine |
author_sort |
Lacombe, Marielle |
title |
Silicate determination in sea water: Towards a reagentless electrochemical method |
title_short |
Silicate determination in sea water: Towards a reagentless electrochemical method |
title_full |
Silicate determination in sea water: Towards a reagentless electrochemical method |
title_fullStr |
Silicate determination in sea water: Towards a reagentless electrochemical method |
title_full_unstemmed |
Silicate determination in sea water: Towards a reagentless electrochemical method |
title_sort |
silicate determination in sea water: towards a reagentless electrochemical method |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00177903 https://hal.science/hal-00177903/document https://hal.science/hal-00177903/file/Comtat_3079.pdf https://doi.org/10.1016/j.marchem.2007.05.002 |
genre |
Drake Passage |
genre_facet |
Drake Passage |
op_source |
ISSN: 0304-4203 Marine Chemistry https://hal.science/hal-00177903 Marine Chemistry, 2007, 106 (3-4), pp.489-497. ⟨10.1016/j.marchem.2007.05.002⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marchem.2007.05.002 hal-00177903 https://hal.science/hal-00177903 https://hal.science/hal-00177903/document https://hal.science/hal-00177903/file/Comtat_3079.pdf doi:10.1016/j.marchem.2007.05.002 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.marchem.2007.05.002 |
container_title |
Marine Chemistry |
container_volume |
106 |
container_issue |
3-4 |
container_start_page |
489 |
op_container_end_page |
497 |
_version_ |
1799479080597323776 |
spelling |
ftuniversailles:oai:HAL:hal-00177903v1 2024-05-19T07:39:30+00:00 Silicate determination in sea water: Towards a reagentless electrochemical method Lacombe, Marielle Garçon, Véronique Comtat, Maurice Oriol, Louise Sudre, Joël Thouron, Danièle Le Bris, Nadine Provost, Christine Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Génie Chimique (LGC) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP) Université de Toulouse (UT) Laboratoire d'océanographie biologique de Banyuls (LOBB) Observatoire océanologique de Banyuls (OOB) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire Environnement Profond (LEP) Etudes des Ecosystèmes Profonds (EEP) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2007 https://hal.science/hal-00177903 https://hal.science/hal-00177903/document https://hal.science/hal-00177903/file/Comtat_3079.pdf https://doi.org/10.1016/j.marchem.2007.05.002 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marchem.2007.05.002 hal-00177903 https://hal.science/hal-00177903 https://hal.science/hal-00177903/document https://hal.science/hal-00177903/file/Comtat_3079.pdf doi:10.1016/j.marchem.2007.05.002 info:eu-repo/semantics/OpenAccess ISSN: 0304-4203 Marine Chemistry https://hal.science/hal-00177903 Marine Chemistry, 2007, 106 (3-4), pp.489-497. ⟨10.1016/j.marchem.2007.05.002⟩ Silicate Chronoamperometry Voltammetry Molybdenum Reagentless method Drake Passage [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2007 ftuniversailles https://doi.org/10.1016/j.marchem.2007.05.002 2024-04-25T00:17:44Z Silicate has been determined in sea water by four different electrochemical methods based on the detection of the silicomolybdic complex formed in acidic media by the reaction between silicate and molybdenum salts. The first two methods are based on the addition of molybdate and protons in a seawater sample in an electrochemical cell. Cyclic voltammetry presents two reduction and two oxidation peaks giving four values of the concentration and therefore increasing the precision. Then chronoamperometry is performed on an electrode held at a constant potential. A semi-autonomous method has been developed based on the electrochemical anodic oxidation of molybdenum, the complexation of the oxidation product with silicate and the detection of the complex by cyclic voltammetry. This method is tested and compared with the classical colorimetric one during ANT XXIII/3 cruise across Drake Passage (January-February 2006). The detection limit is 1 μM and the deviation between both methods is less than 3% for concentrations higher than 10 μM. Finally a complete reagentless method with a precision of 2.6% is described based on the simultaneous formation of the molybdenum salt and protons in a divided electrochemical cell. This latter method should be very useful for developing a reagentless sensor suitable for long term in situ deployments on oceanic biogeochemical observatories. Article in Journal/Newspaper Drake Passage Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Marine Chemistry 106 3-4 489 497 |