Distribution of heavy metals in perennial wall-rocket (Diplotaxis tenuifolia L. DC.) : bachelor thesis

U ovom završnom radu određene su koncentracije odabranih teških metala (cink, željezo, mangan, nikal, bakar, kadmij, olovo i aluminij) u uskolisnom dvoredcu (Diplotaxis tenuifolia L. DC.) koji je sabran u rujnu 2017., na polju iza zgrade Kemijsko-tehnološkog fakulteta. Uskolisni dvoredac je podijeljen na dva dijela: podzemni (korijen) i nadzemni (listovi, cvijet, stabljika). Koncentracije teških metala u otopinama uskolisnog dvoredca su određene pomoću spektrometrije masa s induktivno spregnutom plazmom (ICP-MS). Na temelju izmjerenih vrijednosti može se uočiti da su koncentracije kadmija, nikla, aluminija, željeza i mangana više u podzemnim dijelovima biljke, dok cink, olovo i bakar pokazuju više koncentracije u nadzemnim dijelovima biljke što je posljedica translokacije iz korijena. Toksični kadmij pokazuje najnižu izmjerenu koncentraciju (0,053 µg g-1) u nadzemnom i dvostruko višu koncentraciju (0,112 µg g-1) u podzemnom dijelu biljke i nalazi se u okviru dopuštenih koncentracija. Najveću koncentraciju u uskolisnom dvoredcu pokazuje aluminij u podzemnom dijelu 245,521 µg g-1, a s obzirom da biljka nije pokazala nikakve znakove fitotoksičnosti moglo bi se zaključiti kako se radi o hipertolerantnoj biljci, ako ne i o hiperakumulatoru, što je potrebno dodatno istražiti.In this bachelor thesis, concentrations of selected heavy metals (zinc, iron, manganese, nickel, copper, cadmium, lead and aluminum) were determinated in perennial wall-rocket (Diplotaxis tenuifolia L. DC.) which was collected in September 2017, on the field behind the Faculty of Chemistry and Technology building. The perennial wall-rocket was divided into two parts: the underground part (root) and aerial part (leaves, flower, stem). Concentrations of heavy metals in solutions of the perennial wall-rocket were determinated by inductively coupled plasma mass spectrometry (ICP-MS). Based on the values obtained it can be noticed that concentrations of cadmium, nickel, aluminum, iron and manganese were higher in the underground part, while zinc, lead and copper showed higher concentrations in the aerial parts of the plant resulting from root translocation. Toxic cadmium showed the lowest measured concentration in the aerial part (0.053 μg g-1) and twice the higher concentration in the underground part of the plant (0.112 μg g-1) and is within the permissible concentrations. The highest concentration of 245.521 μg g-1 was measured for aluminum in the underground part of the perennial wall-rocket, and given that the plant did not show any signs of phytotoxicity it could be concluded that it may be a hypertolerant plant, if not the hypercumulator, which should be further investigated