20.500.12556/DiRROS-22461 Molybdenum, lead and zinc mobility potential in agricultural environments a case study of the Kočani field, North Macedonia mobilnost molibdena, svinca in cinka v kmetijskih okoljih, primer Kočanskega polja (Severna Makedonija) The research focuses on the assessment of potential toxic elements (PTEs) contamination of the soils of the Kočani field (North Macedonia) due to the surrounding past and current polymetallic mining activities. The Zletovska River drains the untreated wastewater from the Pb-Zn mine in the Zletovo-Kratovo region and is unfortunately used to irrigate the surrounding rice fields. Elevated levels of molybdenum (Mo) and especially lead (Pb) and zinc (Zn) were found in the soil samples from the rice fields near the Zletovska River (in the western part of the Kočani field), which are well above the limit and critical emission values for PTEs content in soils. In addition, Mo was consistently bound to water soluble, exchangeable and oxidizable fractions in all samples, while reducible and residual fractions were predominated by Pb and Zn. According to the sum of the water-soluble and exchangeable fractions, the mobility and environmental bioavailability potential of the investigated PTEs in the soil-plant system decreased in the following order: Mo > Pb > Zn. It is therefore very important to emphasize that when assessing the environmental impact of PTEs on the respective surroundings, not only the commonly considered trace and minor PTEs (such as Pb and Zn) that occur in geological materials should be taken into account, but also in lower contents (such as Mo). The translocation of PTEs within the ecosystem does not depend on their total content in the primary geological materials, but on their individual mobility and binding capacity. Raziskava se osredotoča na onesnaženost tal s potencialno toksičnimi elementi (PTE) na območju Kočanskega polja (Severna Makedonija), ki se nahaja v bližini dveh še vedno aktivnih rudnikov, Sase-Toranice in Zletova-Kratova. V vzorcih tal riževih polj ob reki Zletovski smo odkrili povečane vsebnosti molibdena (Mo) in predvsem kritične vsebnosti svinca (Pb) ter cinka (Zn). Reka Zletovska odvaja neprečiščeno odpadno vodo iz rudnika Pb-Zn Zletovo-Kratovo, na območju Kočanskega polja pa se rečna voda uporablja za intenzivno namakanje riževih polj. S pomočjo rezultatov zaporedne ekstrakcijske analize smo ugotovili, da so deleži Mo večinoma topni v talni raztopini, izmenljivo vezani in vezani na organsko snov, medtem ko so deleži Pb in Zn večinoma vezani na Fe in Mn okside/hidrokside ter v preostanku. Nadalje smo določili mobilnostni potencial in biodostopnost preiskovanih PTE, ki se zmanjšujeta v naslednjem vrstnem redu: Mo > Pb > Zn. Posledično je pomembno poudariti, da pri ocenjevanju okoljskega vpliva PTE ne upoštevamo le splošno obravnavane PTE (kot sta Pb in Zn), temveč tudi tiste, ki se pojavljajo v kamninah, mineralih in tleh v manjših vsebnostih (kot je Mo). Premeščanje PTE v ekosistemu ni odvisna od njihovih celokupnih vsebnosti v primarnih geoloških materialih, ampak od njihovih individualnih lastnosti mobilnosti in vezave. potencialno strupeni elementi tla mobilnost okoljska ocena Severna Makedonija potential toxic elements soil mobility potential environmental assessment North Macedonia true false true Slovenski jezik Angleški jezik Neznano 2025-05-21 09:17:30 2025-05-21 09:17:30 2025-10-24 03:51:19 0000-00-00 00:00:00 2024 0 0 str. 273-284 no. 2 vol. 67 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-12-16 55 0016-7789 10.5474/geologija.2024.013 219611907 1902-Article_Text-12342583-1-10-20241217.pdf 1902-Article_Text-12342583-1-10-20241217.pdf 1 B52B9816CDB38DE30811766973F39E04 07fb610c88c38b48724c78f537a90d45adb0773243cc825c054d539b8de7a8e1 dbe97ae9-3613-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=32452 Geološki zavod Slovenije Geologija 0 0 0