Accumulation of mercury in wild edible mushrooms in the area of Istria and Primorsko-goranska county

Abstract

Cilj ovog istraživanja bio je utvrditi koncentracije žive u 10 samoniklih vrsta jestivih gljiva i tlu na kojem rastu i prikladnost analiziranih vrsta gljiva kao bioindikatora onečišćenja okoliša. U istraživanju je analizirano pet saprofitskih vrsta (Agaricus campestris (L) Fries, Armilariella mellea (Vahl. ex Fr.) Karst., Clitocybe inversa (Scop. ex Fr.) Pat., Clitocybe nebularis Batsch. ex Fr., Macrolepiota procera (Scop. ex Fr.) Sing.,) i pet ektomikoriznih vrsta (Lactarius deterimus Groger, Boletus edulis Bull. ex Fries, Boletus aestivalis Paulet ex Fries, Tricholoma portentosum (Fr.) Quelet, Tricholoma terreum (Schff. ex Fr.) Kummer). Koncentracija žive u otopini koja je prilagođena za očitavanje pojedinog elementa, utvrđena je mjerenjem apsorpcije na atomskom apsorpcijskom spektrometru AAS (SOLAR-THERMO SCIENTIFIC, Type M5 AA System) sukladno normi HRN ISO 11466: 2004. Utvrđena je značajna razlika (p1), pri čemu su najbolji bioindikatori onečišćenja okoliša živom gljive iz roda Boletus. Usporedbom koncentracija žive u gljivama i propisanim zakonskim odredbama, može se zaključiti da konzumacija istih ne predstavlja negativan učinak na zdravlje ljudi.The aim of this study was to determine the concentration of mrcury in ten wild edible mushrooms and the substrate, to assess the role of individual species as biological indicators of environmental pollution. In this study we analyzed five saprophytic species (Agaricus campestris (L) Fries, Armilariella mellea (Vahl. ex Fr.) Karst., Clitocybe inversa (Scop. ex Fr.) Pat., Clitocybe nebularis Batsch. ex Fr., Macrolepiota procera (Scop. ex Fr.) Sing.,) and five ectomycorrhizal species (Boletus aestivalis Paulet ex Fries., Boletus edulis Bull ex Fries., Lactarius deterrimus Groger., Tricholoma portentosum (Fr.) Quelet, Tricholoma terreum (Schff. ex Fr.) Kummer). The concentration of mercury in a solution adapted to read the individual element was determined by measuring absorption at the atomic absorption spectrometer AAS (SOLAR-THERMO SCIENTIFIC, type M5 AA System) according to HRN ISO 11466: 2004. Significant differences were found in the concentrations of mercury between analysed saprophytic and ectomycorrhizal species of mushrooms (p1), whereby the best bio-indicators of environmental pollution of mercury mushrooms from the genus Boletus. By comparing the concentration of mercury in mushrooms and the legal act, it can be concluded that consuming them does not have a negative impact on human health

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