Pregled bibliografske jedinice broj: 524881
Determination of metals in olive oil by electrothermal atomic absorption spectrometry
Determination of metals in olive oil by electrothermal atomic absorption spectrometry // Proceedings of 13th Ružička days "Today science - tomorrow industry" / Šubarić, Drago (ur.).
Osijek: Prehrambeno-biotehnološki fakultet Sveučilišta u Zagrebu, 2010. str. 230-239 (ostalo, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 524881 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Determination of metals in olive oil by electrothermal atomic absorption spectrometry
Autori
Brkljača, Mia ; Giljanović, Josipa
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Proceedings of 13th Ružička days "Today science - tomorrow industry"
/ Šubarić, Drago - Osijek : Prehrambeno-biotehnološki fakultet Sveučilišta u Zagrebu, 2010, 230-239
ISBN
978-953-7005-26-9
Skup
International Scientific and Professional Conference 13th Ružička days
Mjesto i datum
Osijek, Hrvatska, 16.09.2010. - 17.09.2010
Vrsta sudjelovanja
Ostalo
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
ET-AAS ; metal ; olive oil ; sample preparation
Sažetak
The aim of this work is to propose the most efficient procedure for preparation of olive oil samples for analysis of copper, cadmium, nickel, lead and iron by electrothermal atomic absorption spectrometry, and to assess metal content in Croatian virgin olive oils. Digestion with HNO3, H2SO4 and H2O2 assisted by microwave energy in open glass test tubes was not efficient for copper, cadmium, nickel and lead determination, except for iron determination for which precision was low. Extraction of metals with HNO3, c = 1.5 mol L-1, was precise but not complete. The most suitable procedure was heating of samples at 300oC for 24 hours and dry ashing in muffle furnace at 450oC for 16 hours. The latter method was applied for analyses of metals in samples collected from local family growers of Dalmatia. The content of Cu, Pb and Fe was higher (P<0.05) in oils extracted by press than by centrifugation. The samples were classified into three groups according to cluster analysis. The environmental conditions probably influenced the metal composition of Korčula samples and therefore indicated that metal content could be used for identification of geographical origin. The metal contents were bellow the maximum allowed levels (OG 16/05), and were in close agreement with data reported for Spanish and Italian olive oils.
Izvorni jezik
Engleski
Znanstvena područja
Kemija, Poljoprivreda (agronomija)
POVEZANOST RADA
Ustanove:
Kemijsko-tehnološki fakultet, Split,
Institut za jadranske kulture i melioraciju krša, Split
