Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 1124096

Redox Speciation of Vanadium in Estuarine Waters Using Improved Methodology Based on Anion Exchange Chromatography Coupled to HR ICP-MS System


Knežević, Lucija; Omanović, Dario; Bačić, Niko; Mandić, Jelena; Bura-Nakić, Elvira
Redox Speciation of Vanadium in Estuarine Waters Using Improved Methodology Based on Anion Exchange Chromatography Coupled to HR ICP-MS System // Molecules, 26 (2021), 9; 2436, 15 doi:10.3390/molecules26092436 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 1124096 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Redox Speciation of Vanadium in Estuarine Waters Using Improved Methodology Based on Anion Exchange Chromatography Coupled to HR ICP-MS System

Autori
Knežević, Lucija ; Omanović, Dario ; Bačić, Niko ; Mandić, Jelena ; Bura-Nakić, Elvira

Izvornik
Molecules (1420-3049) 26 (2021), 9; 2436, 15

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

Ključne riječi
vanadium(V) redox speciation ; ion chromatography ; on-column complexation ; Krka River estuary ; high-salinity matrix

Sažetak
An improved methodology was developed for V redox speciation in estuarine waters using a hyphenated technique consisting of ion chromatograph (IC) with an anion exchange column and a high-resolution inductively coupled plasma mass spectrometer (HR ICP-MS). This approach enables the direct determination of V(V), whereas reduced species (mainly V(IV)) are calculated by subtracting V(V) concentrations from the measured total V concentration. Based on the “on-column” V(V) chelation mechanism by EDTA, with the eluent composed of 40 mmol L−1 ammonium bicarbonate, 40 mmol L−1 ammonium sulphate, 8 mmol L−1 ethylenediaminetetraacetic acid and 3% acetonitrile, the method was successfully used for analyses of V redox speciation in samples taken in the vertical salinity gradient of the highly stratified Krka River estuary. Due to the matrix effects causing different sensitivities, a standard addition method was used for V(V) quantification purposes. The limit of detection (LOD) was also found to be matrix related: 101.68 ng L−1 in the seawater and 30.56 µg L−1 in the freshwater. Performed stability tests showed that V redox speciation is preserved at least 7 days in un-treated samples, possibly due to the stabilization of V-reduced species with natural organic matter (NOM). The dominant V form in the analysed samples was V(V) with the reduced V(IV) accounting for up to 26% of the total dissolved pool. The concentration of V(IV) was found to correlate negatively with the oxygen concentration. Significant removal of dissolved V was detected in oxygen depleted zones possibly related to the particle scavenging.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekti:
HRZZ-IP-2018-01-7813 - Geokemija i zapis redoks indikatora u različitim uvjetima okoliša: prema boljem razumijevanju redoks uvjeta u prošlosti (REDOX) (Bura-Nakić, Elvira, HRZZ - 2018-01) ( POIROT)
HRZZ-IP-2014-09-7530 - Novi metodološki pristup biogeokemijskim istraživanjima specijacije metala u tragovima u obalnim vodenim ekosustavima (MEBTRACE) (Omanović, Dario, HRZZ - 2014-09) ( POIROT)

Ustanove:
Institut za oceanografiju i ribarstvo, Split,
Institut "Ruđer Bošković", Zagreb

Citiraj ovu publikaciju

Knežević, Lucija; Omanović, Dario; Bačić, Niko; Mandić, Jelena; Bura-Nakić, Elvira
Redox Speciation of Vanadium in Estuarine Waters Using Improved Methodology Based on Anion Exchange Chromatography Coupled to HR ICP-MS System // Molecules, 26 (2021), 9; 2436, 15 doi:10.3390/molecules26092436 (međunarodna recenzija, članak, znanstveni)
Knežević, L., Omanović, D., Bačić, N., Mandić, J. & Bura-Nakić, E. (2021) Redox Speciation of Vanadium in Estuarine Waters Using Improved Methodology Based on Anion Exchange Chromatography Coupled to HR ICP-MS System. Molecules, 26 (9), 2436, 15 doi:10.3390/molecules26092436.
@article{article, year = {2021}, pages = {15}, DOI = {10.3390/molecules26092436}, chapter = {2436}, keywords = {vanadium(V) redox speciation, ion chromatography, on-column complexation, Krka River estuary, high-salinity matrix}, journal = {Molecules}, doi = {10.3390/molecules26092436}, volume = {26}, number = {9}, issn = {1420-3049}, title = {Redox Speciation of Vanadium in Estuarine Waters Using Improved Methodology Based on Anion Exchange Chromatography Coupled to HR ICP-MS System}, keyword = {vanadium(V) redox speciation, ion chromatography, on-column complexation, Krka River estuary, high-salinity matrix}, chapternumber = {2436} }
@article{article, year = {2021}, pages = {15}, DOI = {10.3390/molecules26092436}, chapter = {2436}, keywords = {vanadium(V) redox speciation, ion chromatography, on-column complexation, Krka River estuary, high-salinity matrix}, journal = {Molecules}, doi = {10.3390/molecules26092436}, volume = {26}, number = {9}, issn = {1420-3049}, title = {Redox Speciation of Vanadium in Estuarine Waters Using Improved Methodology Based on Anion Exchange Chromatography Coupled to HR ICP-MS System}, keyword = {vanadium(V) redox speciation, ion chromatography, on-column complexation, Krka River estuary, high-salinity matrix}, chapternumber = {2436} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


Citati





    Contrast
    Increase Font
    Decrease Font
    Dyslexic Font