Evaluation of heavy metals accumulation potential of hemp za akumulaciju teskih metala

• Published in: Journal of Central European agriculture Vol. 20; no. 2
• Main Authors: Galic, Marija, Percin, Aleksandra, Zgorelec, Zeljka, Kisic, Ivica
• Format: Journal Article
• Language: English
• Published: Sveuciliste U Zagrebu 01-06-2019
• Subjects: Analysis; Health; Heavy metals; Marijuana; Metals (Materials); Pollution; Soils; Croatia
• DOI: 10.5513/JCEA01/20.2.2201
• EISSN: 1332-9049

Heavy metals accumulation in crops and soils poses a significant threat to the human health. A study was carried out in 2016 in order to assess hemp (Cannabis sativa L.) ability to accumulate heavy metals and to reveal its possibility as a phytoaccumulator or phytostabilizer. Two soil types from Croatia were used in experimental pots: Gleysoils (alkaline soil) and Stagnic Luvisol (acid soil). Majority of the varieties accumulated more heavy metals in roots than in above-ground biomass. Removal of Cd, Ni, Pb, Hg, Co, Mo and As was higher in acid soil. Potential ability for phytostabilization was observed in alkaline soil in order Cu>Cr> Cd>Mo>Hg>Zn>Ni>Co>As>Pb, while for acid soil in order Zn>Cd>Cr>Ni>Hg>Cu> Mo>As>Co>Pb. Some varieties exhibited a translocation coefficient (TC) more than 1 and shown the ability of hyper-accumulation for Zn, Hg, Mo and Cd. Higher accumulation of heavy metals in some varieties could lead to their general application for phytoaccumulation of heavy metals from polluted soils. Keywords: bioaccumulation coefficient, pH, phytoaccumulation, soil types, translocation coefficient, uptake Akumulacija teskih metala u usjevima i tlima predstavlja znacajnu prijetnju ljudskom zdravlju. Istrazivanje je provedeno 2016. godine kako bi se procijenila sposobnost konoplje [Cannabis sativa L.) za akumulaciju teskih metala i njene mogucnosti kao fitokakumulatora ili fitostabilizatora. U eksperimentalnim posudama upotrijebljene su dvije vrste tla iz Hrvatske: glejno (alkalno tlo) i luvisol (kiselo tlo). Vecina vrsta nakupila je vise teskih metala u korijenu nego u biomasi iznad zemlje. Akumulacija Cd, Ni, Pb, Hg, Co, Mo i As bila je veca u kiselom tlu. Potencijalna sposobnost za fitostabilizaciju zabiljezena je u alkalnom tlu kako slijedi: Cu>Cr>Cd>Mo>Hg>Zn> Ni>Co>As>Pb, dok je za kiselo tlo kako slijedi: Zn>Cd>Cr>Ni>Hg>Cu>Mo> As>Co>Pb. Neke su vrste pokazale koeficijent translokacije (TC) veci od 1 i sposobnost hiperakumulacije za Zn, Hg, Mo i Cd. Veca nakupljanja teskih metala u nekim vrstama mogla bi dovesti do njihove opce primjene za fitoakumulaciju teskih metala iz zagadenih tala. Kljucne rijeci: fitoakumulacija, koeficijent bioakumulacije, koeficijent translokacije, pH, tipovi tla, unos