Pregled bibliografske jedinice broj: 1035936
Ion-exchange chromatography as a tool for investigating vanadium speciation in sediments: preliminary studie
Ion-exchange chromatography as a tool for investigating vanadium speciation in sediments: preliminary studie // Journal of soils and sediments, 20 (2020), 2733-2740 doi:10.1007/s11368-019-02484-3 (međunarodna recenzija, članak, znanstveni)
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Naslov
Ion-exchange chromatography as a tool for
investigating vanadium speciation in sediments:
preliminary studie
Autori
Knežević, Lucija ; Cukrov, Nuša ; Bura-Nakić, Elvira
Izvornik
Journal of soils and sediments (1439-0108) 20
(2020);
2733-2740
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Extractable sediment fraction ; Ion chromatography ; Krka River estuary ; Speciation ; Trace metals ; Vanadium chemistry
Sažetak
Abstract Purpose We conducted this investigation in order to develop a simple method for the determination of bioavailable vanadium and its speciation within sediments. Materials and methods The developed method is based on the determination of acid-extractable vanadium, as this fraction is presumably bioavailable, and its subsequent speciation using IC–UV/Vis (ionic chromatography with an ultraviolet-visible detector). A published procedure for vanadium speciation in pore water was further optimized in order to separate V(IV) and V(V) species using column EDTA derivatization on sediment samples. The analytical approach was applied in order to assess acid-extractable vanadium and its speciation within estuary sediments of the Krka River at the Dalmatian coast of Croatia. Results and discussion The results imply that the majority of vanadium within estuary sediments is in the form of less soluble fraction while the acid-extractable fraction comprises approximately 40% of the total vanadium present. In contrast, open sea sediment (station K4) was completely dominated by the acid-extractable vanadium. The extracted vanadium is in the form of V (IV). Conclusions Ion-exchange chromatography with an UV/Vis detector is a promising analytical method for vanadium speciation, however, further optimization of the conditions (improvement of the sequential extraction procedure) is needed in order to assess speciation also within other vanadium sedimentary fraction
Izvorni jezik
Engleski
Znanstvena područja
Geologija, Kemija, Interdisciplinarne prirodne znanosti
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) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb
Citiraj ovu publikaciju:
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
