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Silver(I) Ions Ultrasensitive Detection at Carbon Electrodes-Analysis of Waters, Tobacco Cells and Fish Tissues

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dc.title Silver(I) Ions Ultrasensitive Detection at Carbon Electrodes-Analysis of Waters, Tobacco Cells and Fish Tissues en
dc.contributor.author Křížková, Soňa
dc.contributor.author Kryštofová, Olga
dc.contributor.author Trnková, Libuše
dc.contributor.author Hubálek, Jaromír
dc.contributor.author Adam, Vojtěch
dc.contributor.author Beklová, Miroslava
dc.contributor.author Horna, Aleš
dc.contributor.author Havel, Ladislav
dc.contributor.author Kizek, René
dc.relation.ispartof Sensors
dc.identifier.issn 1424-8220 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2009
utb.relation.volume 9
utb.relation.issue 9
dc.citation.spage 6934
dc.citation.epage 6950
dc.type article
dc.language.iso en
dc.publisher Molecular Diversity Preservation International (MDPI) en
dc.identifier.doi 10.3390/s90906934
dc.relation.uri http://www.mdpi.com/1424-8220/9/9/6934/
dc.subject trout oncorhynchus-mykiss en
dc.subject square-wave voltammetry en
dc.subject rainbow-trout en
dc.subject paste electrode en
dc.subject environmental-pollution en
dc.subject stripping voltammetry en
dc.subject fathead minnows en
dc.subject toxicity en
dc.subject sediments en
dc.subject exposure en
dc.description.abstract We used carbon paste electrodes and a standard potentiostat to detect silver ions. The detection limit (3 Signal/Noise ratio) was estimated as 0,5 mu M. A standard electrochemical instrument microanalysis of silver (I) ions was suggested. As a working electrode a carbon tip (1 mL) or carbon pencil was used. Limits of detection estimated by dilution of a standard were 1 (carbon tip) or 10 nM (carbon pencil). Further we employed flow injection analysis coupled with carbon tip to detect silver(I) ions released in variousbeverages and mineral waters. During first, second and third week the amount of silver(I) ions releasing into water samples was under the detection limit of the technique used for their quantification. At the end of a thirteen weeks long experiment the content of silver(I) ions was several times higher compared to the beginning of release detected in the third week and was on the order of tens nanomoles. In subsequent experiments the influence of silver(Iú ions (0,5 and 10 mu M) on a plant model system (tobacco BY -2 cells) during a four-day exposition was investigated. Silver(I) ions were highly toxic to the cells, which was revealed by a double staining viability assay. Moreover we investigated the effect of silver(I) ions (0, 0.3, 0.6, 1.2 and 2.5 mu M) on guppies (Poecilia reticulata). Content of Ag(I) increased with increasing time of the treatment and applied concentrations in fish tissues. It can be concluded that a carbon tip or carbon pencil coupled with a miniaturized potentiostat can be used for detection of silver(I) ions in environmental samples and thus represents a small, portable, low cost and easy-to-use instrument for such purposes. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1001705
utb.identifier.rivid RIV/70883521:28610/09:63508770!RIV10-MSM-28610___
utb.identifier.obdid 43861798
utb.identifier.scopus 2-s2.0-70350009959
utb.identifier.wok 000270213300020
utb.source j-riv
dc.rights Attribution 3.0 International
dc.rights.uri http://creativecommons.org/licenses/by/3.0/
dc.rights.access openAccess
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Horna, Aleš
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