dc.contributor.author |
Horstkotte, Burkhard
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dc.contributor.author |
Suárez Sánchez, Ruth
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dc.contributor.author |
Solich, Petr
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dc.contributor.author |
Cerdà Martín, Víctor
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dc.date.accessioned |
2018-09-21T12:23:36Z |
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dc.date.available |
2018-09-21T12:23:36Z |
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dc.identifier.uri |
http://hdl.handle.net/11201/147598 |
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dc.description.abstract |
[eng] For the first time, the use of a magnetic stirrer within the syringe of an automated syringe pump and the resulting possible analytical applications are described. A simple instrumentation following roughly the one from sequential injection analyzer systems is used in combination with an adaptor, which is placed onto the barrel of a glass syringe. Swirling around the longitudinal axis of the syringe and holding two strong neodymium magnets, it causes a rotating magnetic field and serves as driver for a magnetic stirring bar placed inside of the syringe. In a first study it was shown that this approach leads to a sealed but also automatically adaptable reaction vessel, the syringe, in which rapid and homogeneous mixing of sample with the required reagents within short time can be carried out. In a second study in-a-syringe magnetic stirring-assisted dispersive liquid-liquid microextraction (MSA-DLLME) was demonstrated by the application of the analyzer system to fluorimetric determination of aluminum in seawater samples using lumogallion. A linear working range up to 1.1 mol L−1 and a limit of detection of 6.1 nmol L−1 were found. An average recovery of 106.0% was achieved for coastal seawaters with a reproducibility of 4.4%. The procedure lasted 210 s including syringe cleaning and only 150 L of hexanol and 4.1 mL of sample were required. |
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dc.format |
application/pdf |
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dc.relation.isformatof |
Versió postprint del document publicat a: https://doi.org/10.1016/j.aca.2013.05.049 |
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dc.relation.ispartof |
Analytica Chimica Acta, 2013, vol. 788, p. 52-60 |
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dc.rights |
(c) Elsevier B.V., 2013 |
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dc.subject.classification |
543 - Química analítica |
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dc.subject.other |
543 - Analytical chemistry |
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dc.title |
In-syringe-stirring: A novel approach for magnetic stirring-assisted dispersive liquid-liquid microextraction |
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dc.type |
info:eu-repo/semantics/article |
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dc.type |
info:eu-repo/semantics/acceptedVersion |
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dc.date.updated |
2018-09-21T12:23:36Z |
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dc.subject.keywords |
In-Syringe Magnetic Stirring-Assisted DLLME |
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dc.subject.keywords |
liquid-liquid microextraction |
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dc.subject.keywords |
Single-drop extraction |
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dc.subject.keywords |
Aluminum |
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dc.subject.keywords |
seawater |
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dc.rights.accessRights |
info:eu-repo/semantics/openAccess |
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dc.identifier.doi |
https://doi.org/10.1016/j.aca.2013.05.049 |
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