Mineraloške i geokemijske karakteristike pseudoglejnog tla na području Jazbine

master's thesis

• Title: Mineraloške i geokemijske karakteristike pseudoglejnog tla na području Jazbine : diplomski rad
• Title (english): Mineral and geochemistry caracteristics of pseudogley soil at Jazbina area : master's thesis
• Author: Barbara Bićanić
• Mentor: Stanko Ružičić (mentor)
• Committee member: Stanko Ružičić (predsjednik povjerenstva)
• Committee member: Zoran Kovač (član povjerenstva)
• Committee member: Marta Mileusnić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mineralogy, Petrology and Mineral Resources); Zagreb
• Defense date and country: 2024-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Geological Engineering

Abstract

Cilj istraživanja je određivanje mineraloških i geokemijskih karakteristika pseudoglejnog tla na istraživanom području te ponašanje analiziranih kemijskih elemenata (potencijalno toksičnih i biogenih) u profilu. Svrha ovog istraživanja bila je utvrditi da li ukupne koncentracije potencijalno toksičnih elemenata prelaze maksimalno dozvoljene koncentracije (MDK) propisane Pravilnikom o zaštiti poljoprivrednih tala od onečišćenja (NN 32/10), s obzirom na korištenje raznih kemikalija na tom području. Uzorci su prikupljeni sa tri lokacije na padini: vrh, sredina i dno te je uzorkovano iz tri horizonta sa svake od tih lokacija na padini. Laboratorijski su određeni sljedeći parametri uzoraka: pH, električna vodljivost, udio organskog ugljika, granulometrijski sastav (metodom prosijavanja i sedimentacije te metodom laserske difrakcije), udio organske tvari vodikovim peroksidom, udio željezovih i manganovih oksida i hidroksida pomoću ditionit-citrat-bikarbonata, mineralni sastav rendgenskom difrakcijom i ukupne koncentracije elemenata pomoću optičke emisijske spektroskopije induktivno suspregnutom plazmom (ICP-OES) i atomske apsorpcijske spektroskopije (AAS). Na temelju rezultata provedenih istraživanja može se zaključiti da su u uzorcima dominantne čestice veličine praha. Izmjerene ukupne koncentracije kadmija (Cd), kobalta (Co), kroma (Cr), bakra (Cu), nikla (Ni), olova (Pb) i cinka (Zn) manje su od maksimalnih dozvoljenih vrijednosti propisanih Pravilnikom o zaštiti poljoprivrednog zemljišta od onečišćenja (NN 32/10). Utvrđeno je da u svim uzorcima dominiraju kvarc i plagioklasi, zatim slijede znatne količine tinjčastih minerala i klorita, a uzorci sadrže i kalijske feldspate, amfibole, goethit, kaolinit, nepravilno stratificirane minerale i amorfnu tvar. Željezo i mangan dominantni su potencijalno toksični elementi u svim uzorcima, što je karakteristično za pseudoglejna tla. Koncentracije biogenih elemenata (Ca, K, Mg, Na i P) značajne su u horizontu 30 – 60 cm na vrhu padine, a nakon te dubine su snižene njihove koncentracije što je uzrokovano granulometrijskim sastavom. Distribucija elemenata relativno prati distribuciju sljedećih mineralnih faza: minerala glina i željezovih i manganovih oksida i hidroksida.

Abstract (english)

The aim of the research is to determine the mineralogical and geochemical characteristics of the pseudogley soil in the researched area and the behavior of the analyzed chemical elements (potentially toxic and biogenic) in the profile. The purpose of this research was to determine whether the total concentrations of potentially toxic elements exceed the maximum allowed concentrations (MDK) prescribed by the Ordinance on the Protection of Agricultural Soils from Pollution (NN 32/10), considering the use of various chemicals in that area. Samples were collected from three locations on the slope: top, middle and bottom, and three horizons were sampled from each of these locations on the slope. The following sample parameters were determined in the laboratory: pH, electrical conductivity, organic carbon content, granulometric composition (using the sieving and sedimentation method and the laser diffraction method), organic matter content using hydrogen peroxide, iron and manganese oxides and hydroxide content using dithionite-citrate-bicarbonate, mineral composition by X-ray diffraction and total element concentrations using inductively coupled plasma optical emission spectroscopy (ICP-OES) and atomic absorption spectroscopy (AAS). Based on the results of the conducted research, it can be concluded that the dominant particles in the samples are powder-sized particles. The measured total concentrations of cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn) are less than the maximum allowed values prescribed by the Ordinance on the Protection of Agricultural Land from pollution (NN 32/10). It was found that all samples are dominated by quartz and plagioclase, followed by significant amounts of mica and chlorite, and the samples also contain potassium feldspars, amphiboles, goethite, kaolinite, irregularly stratified minerals and amorphous matter. Iron and manganese are dominant potentially toxic elements in all samples, which is characteristic of pseudogley soils. Concentrations of biogenic elements (Ca, K, Mg, Na and P) are significant in the 30-60 cm horizon at the top of the slope, and after that depth their concentrations are reduced, which is caused by the granulometric composition. The distribution of elements relatively follows the distribution of the following mineral phases: clay minerals and iron and manganese oxides and hydroxides.

• Keywords: pseudoglejna tla; pokušalište Jazbina; minerali glina; manganovi oksidi i hidroksidi; ICP-OES; AAS
• Keywords (english): soil; pseudogley; experimental site Jazbina; mineralogical composition; metal cations; ICP-OES; AAS
• Language: croatian
• URN:NBN: urn:nbn:hr:169:720045
• Project: Number: UIP-2019-04-5409; Title: Podpovršinski preferencijalni transportni procesi u poljoprivrednim padinskim tlima; Title: SUbsurface PREferential transport processes in agricultural HILLslope soils; Acronym: SUPREHILL; Leader: Vilim Filipović; Jurisdiction: Croatia; Funder: Hrvatska zaklada za znanost; Funding stream: Installation Research Projects
• Study programme: Title: Geological engineering; specializations in: Hydrogeology and engineering geology, Environmental geology; Course: Environmental geology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka geološkog inženjerstva (magistar/magistra inženjer/inženjerka geološkog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-04-22 07:31:31