Please use this identifier to cite or link to this item:
https://dspace.ffh.bg.ac.rs/handle/123456789/1161
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Vukojević, Vladana B. | en_US |
dc.contributor.author | Pejić, Nataša D. | en_US |
dc.contributor.author | Stanisavljev, Dragomir | en_US |
dc.contributor.author | Anić, Slobodan | en_US |
dc.contributor.author | Kolar-Anić, Ljiljana | en_US |
dc.date.accessioned | 2022-12-16T17:32:47Z | - |
dc.date.available | 2022-12-16T17:32:47Z | - |
dc.date.issued | 1999-01-01 | - |
dc.identifier.issn | 0003-2654 | en |
dc.identifier.uri | https://dspace.ffh.bg.ac.rs/handle/123456789/1161 | - |
dc.description.abstract | A new method applying a non-linear chemical system under conditions far from thermodynamic equilibrium in microvolume/microconcentration quantitative analysis is described. The chemical system used as a matrix is the Bray-Liebhafsky reaction in a non-equilibrium stationary state close to a bifurcation point. The method is based on monitoring the response of this system to perturbations by Cl-, Br-, I-, Mn2+, malonic acid and quercetin analyte solutions, which are followed potentiometrically either by an Ag+/S2- ion-sensitive or by a Pt electrode. A linear response of the potential shift versus the logarithm of the analyte concentrations is found in the following ranges: 1.3 X 10-6 mol dm-3 ≤ [Cl-] ≤ 1.6 x 10-4 mol dm-3, 1.0 x 10-6 mol dm-3 ≤ [Br-] ≤ 8.3 x 10-5 mol dm-3, 2.0 x 10-6 mol dm-3 ≤ [I-] ≤ 1.0 x 10-4 mol dm-3, 8.4 x 10-7 mol dm-3 ≤ [Mn2+] ≤ 8.3 x 10-5 mol dm-3, 3.8 x 10-7 mol dm-3 ≤ [malonic acid] ≤ 2.1 x 10-5 mol dm-3 and 1.5 x 10-8 mol dm-3 ≤ [quercetin] ≤ 3.7 x 10-5 mol dm-3. Under the investigated conditions an improved detection limit for all halides tested is obtained. Unknown concentrations of the analytes can be determined from a standard series of calibration curves to an accuracy within ± 5%. In addition, the application of potentiometric measurements in microvolume/microconcentration quantitative analysis is diversified. | en |
dc.relation.ispartof | Analyst | en |
dc.title | Determination of Cl<sup>-</sup>, Br<sup>-</sup>, I<sup>-</sup>, Mn<sup>2+</sup>, malonic acid and quercetin by perturbation of a non-equilibrium stationary state in the Bray-Liebhafsky reaction | en_US |
dc.type | Journal Article | en_US |
dc.identifier.doi | 10.1039/a807608a | - |
dc.identifier.scopus | 2-s2.0-0033002043 | - |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/0033002043 | - |
dc.relation.firstpage | 147 | en |
dc.relation.lastpage | 152 | en |
dc.relation.issue | 2 | en |
dc.relation.volume | 124 | en |
item.openairetype | Journal Article | - |
item.fulltext | No Fulltext | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | none | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
crisitem.author.orcid | 0000-0003-1361-7977 | - |
crisitem.author.orcid | 0000-0001-5485-9089 | - |
Appears in Collections: | Journal Article |
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