Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/60324
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Campo DC | Valor | Lengua/Idioma |
---|---|---|
dc.contributor.author | Horstkotte, Burkhard | - |
dc.contributor.author | Tovar-Sánchez, Antonio | - |
dc.contributor.author | Duarte, Carlos M. | - |
dc.contributor.author | Cerdà, Víctor | - |
dc.date.accessioned | 2012-11-15T12:18:21Z | - |
dc.date.available | 2012-11-15T12:18:21Z | - |
dc.date.issued | 2010 | - |
dc.identifier | doi: 10.1016/j.aca.2009.11.018 | - |
dc.identifier | issn: 0003-2670 | - |
dc.identifier.citation | Analytica Chimica Acta 658: 147- 155 (2010) | - |
dc.identifier.uri | http://hdl.handle.net/10261/60324 | - |
dc.description.abstract | A multipurpose analyzer system based on sequential injection analysis (SIA) for the determination of dissolved oxygen (DO) in seawater is presented. Three operation modes were established and successfully applied onboard during a research cruise in the Southern ocean: 1st, in-line execution of the entire Winkler method including precipitation of manganese (II) hydroxide, fixation of DO, precipitate dissolution by confluent acidification, and spectrophotometric quantification of the generated iodine/tri-iodide (I2/I3 -), 2nd, spectrophotometric quantification of I2/I3 - in samples prepared according the classical Winkler protocol, and 3rd, accurate batch-wise titration of I2/I3 - with thiosulfate using one syringe pump of the analyzer as automatic burette. In the first mode, the zone stacking principle was applied to achieve high dispersion of the reagent solutions in the sample zone. Spectrophotometric detection was done at the isobestic wavelength 466 nm of I2/I3 -. Highly reduced consumption of reagents and sample compared to the classical Winkler protocol, linear response up to 16 mg L-1 DO, and an injection frequency of 30 per hour were achieved. It is noteworthy that for the offline protocol, sample metering and quantification with a potentiometric titrator lasts in general over 5 min without counting sample fixation, incubation, and glassware cleaning. The modified SIMPLEX methodology was used for the simultaneous optimization of four volumetric and two chemical variables. Vertex calculation and consequent application including in-line preparation of one reagent was carried out in real-time using the software AutoAnalysis. The analytical system featured high signal stability, robustness, and a repeatability of 3% RSD (1st mode) and 0.8% (2nd mode) during shipboard application. © 2009 Elsevier B.V. All rights reserved. | - |
dc.description.sponsorship | This work was funded by the projects “Design and application of analytical systems for the quantification of trace elements in the ocean” supported from the Government of the Balearic Islands (CAIB Progecib-5C), and of the ATOS project, funded by the Spanish Ministry of Science and Innovation (POL2006-00550), a Spanish contribution to the International Polar Year. B.H. was funded by a JAE Postdoctoral fellowship from CSIC. | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier | - |
dc.rights | openAccess | - |
dc.title | Sequential injection analysis for automation of the Winkler methodology, with real-time SIMPLEX optimization and shipboard application | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1016/j.aca.2009.11.018 | - |
dc.date.updated | 2012-11-15T12:18:21Z | - |
dc.description.version | Peer Reviewed | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.languageiso639-1 | en | - |
item.fulltext | With Fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.openairetype | artículo | - |
Aparece en las colecciones: | (IMEDEA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Artikel Sauerstoff SIA.doc | 411,5 kB | Microsoft Word | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
11
checked on 20-abr-2024
WEB OF SCIENCETM
Citations
11
checked on 27-feb-2024
Page view(s)
301
checked on 24-abr-2024
Download(s)
590
checked on 24-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.