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dc.contributor.authorNejdl, Lukáš
dc.contributor.authorKynický, Jindřich
dc.contributor.authorBrtnický, Martin
dc.contributor.authorVaculovičová, Markéta
dc.contributor.authorAdam, Vojtěch
dc.date.accessioned2022-03-16T01:02:17Z
dc.date.available2022-03-16T01:02:17Z
dc.date.issued2017
dc.identifier.issn1424-8220 Sherpa/RoMEO, JCR
dc.identifier.urihttps://repozitar.mendelu.cz/xmlui/handle/20.500.12698/1509
dc.description.abstractToxic metal contamination of the environment is a global issue. In this paper, we present a low-cost and rapid production of amalgam electrodes used for determination of Cd(II) and Pb(II) in environmental samples (soils and wastewaters) by on-site analysis using difference pulse voltammetry. Changes in the electrochemical signals were recorded with a miniaturized potentiostat (width: 80 mm, depth: 54 mm, height: 23 mm) and a portable computer. The limit of detection (LOD) was calculated for the geometric surface of the working electrode 15 mm(2) that can be varied as required for analysis. The LODs were 80 ng.mL(-1) for Cd(II) and 50 ng.mL(-1) for Pb(II), relative standard deviation, RSD <= 8% (n = 3). The area of interest (Dolni Rozinka, Czech Republic) was selected because there is a deposit of uranium ore and extreme anthropogenic activity. Environmental samples were taken directly on-site and immediately analysed. Duration of a single analysis was approximately two minutes. The average concentrations of Cd(II) and Pb(II) in this area were below the global average. The obtained values were verified (correlated) by standard electrochemical methods based on hanging drop electrodes and were in good agreement. The advantages of this method are its cost and time effectivity (approximately two minutes per one sample) with direct analysis of turbid samples (soil leach) in a 2 M HNO3 environment. This type of sample cannot be analyzed using the classical analytical methods without pretreatment.en
dc.formatnestránkováno
dc.publisherMDPI AG (Multidisciplinary Digital Publishing Institute-MDPI)
dc.relation.ispartofSensors
dc.relation.urihttp://dx.doi.org/10.3390/s17081835
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectamalgam electrodesen
dc.subjectelectrochemistryen
dc.subjectheavy metalsen
dc.subjectsoilen
dc.subjectturbid sampleen
dc.titleAmalgam Electrode-Based Electrochemical Detector for On-Site Direct Determination of Cadmium(II) and Lead(II) from Soilsen
dc.typeJ_ČLÁNEK
dc.date.updated2022-03-16T01:02:17Z
dc.description.versionOA
local.identifier.doi10.3390/s17081835
local.identifier.scopus2-s2.0-85027268098
local.identifier.wos000408576900138
local.number8
local.volume17
local.identifier.obd43913289
local.identifier.e-issn1424-8220
dc.identifier.orcidNejdl, Lukáš 0000-0001-6332-8917
dc.identifier.orcidKynický, Jindřich 0000-0001-9193-8990
dc.identifier.orcidBrtnický, Martin 0000-0001-5237-722X
dc.identifier.orcidVaculovičová, Markéta 0000-0002-6771-1304
dc.identifier.orcidAdam, Vojtěch 0000-0002-8527-286X
local.contributor.affiliationAF
local.contributor.affiliationLDF


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CC BY 4.0
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