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Pregled bibliografske jedinice broj: 716828

Electroanalytical methods in characterization of sulfur species in aqueous environment


Ciglenečki, Irena; Marguš, Marija; Bura-Nakić, Elvira; Milanović, Ivana
Electroanalytical methods in characterization of sulfur species in aqueous environment // Journal of Electrochemical Science and Engineering, 4 (2014), 155-163 doi:10.5599/jese.2014.0053 (međunarodna recenzija, članak, znanstveni)


Naslov
Electroanalytical methods in characterization of sulfur species in aqueous environment

Autori
Ciglenečki, Irena ; Marguš, Marija ; Bura-Nakić, Elvira ; Milanović, Ivana

Izvornik
Journal of Electrochemical Science and Engineering (1847-9286) 4 (2014); 155-163

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Voltammetry ; Chronoamperometry ; Speciation ; Reduced sulfur species ; Metal sulfide nanoparticles ; Hg electrode ; Anoxic water samples

Sažetak
Electroanalytical (voltammetric, polarographic, chronoamperometric) methods on an Hg electrode were applied for studying of different sulfur compounds in model and natural water systems (anoxic lakes, waste water, rain precipitation, sea-aerosols). In all investigated samples typical HgS reduction voltammetric peak, characteristic for many different reduced sulfur species (RSS: sulfide, elemental sulfur, polysulfide, labile metal sulfide and organosulfur species) was recorded at about - 0.6 V vs. Ag/AgCl reference electrode. In addition, in anoxic waters which are enriched with sulfide and iron species, voltammetric peaks characteristic for the presence of free Fe(II) and FeS nanoparticles (NPs) were recorded at -1.4 V and around -0.45 V, respectively. Depending on the used electroanalytical method and experimental conditions (varying deposition potential, varying time of oxidative and/or reductive accumulation, sample pretreatment i.e. acidification followed by purging) it is possible to distinguish between different sulfur species. This work clearly shows a large potential of the electrochemistry as a powerful analytical technique for screening water quality regarding presence of different reduced sulfur species and their speciation between dissolved and colloidal/nanoparticle phases.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
098-0982934-2717 - Priroda organske tvari, interakcije s mikrokonstituentima i površinama u okolišu (Irena Ciglenečki-Jušić, )

Ustanove
Institut "Ruđer Bošković", Zagreb

Časopis indeksira:


  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI


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