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Vertikalna razporeditev Cd, Pb in Zn v tleh na območju mestne občine Celje = Vertical distribution Cd, Pb and Zn in soils in the area of the municipality of CeljeKoželj, LeaOnesnaženje tal s težkimi kovinami, zaradi urbanizacije, industrializacije in sodobnega načina kmetovanja, postaja svetovni družbeni problem. Tla imajo sposobnost, da kovine kopičijo, od koder so ... dostopne rastlinam in na ta način lahko vstopajo v prehranjevalno verigo človeka. V raziskavi smo ugotavljali vsebnost svinca, cinka in kadmija v talnih profilih v mestni občini Celje, ki je onesnaženo zaradi topilnice Zn, metalurške industrije in železarne. Izkopali smo pet talnih profilov do globine 100 cm in vzeli vzorce iz posameznih plasti debeline 5 oziroma 10 cm. V tleh smo poleg kovin (razklop z zlatotopko) določili še pH, organsko snov, kationsko izmenjevalno kapaciteto, teksturo in mineralno sestavo. Vsebnosti Pb, Zn in Cd v tleh smo nato primerjali z njihovo vsebnostjo v prašnih usedlinah ter na ta način skušali ugotavljati povezavo med njima. Koncentracije Cd v tleh so bile od manj kot 0,7 do 20 mg/kg, Pb od 10,3 do 433,3 mg/kg in Zn od 53,6 do 1803 mg/kg. Najbolj onesnažena tla so na lokaciji Teharje Dimec, ki ima do globine 10 cm največje koncentracije Pb, Zn in Cd. Sledita ii Lava in Industrijska cona, kjer so največje koncentracije dosežene na globini 40 - 50 cm, kar je verjetno posledica antropogenega mešanja in navažanja materiala. V naravnih tleh smo ugotovili značilen trend upadanja vrednosti kovin z globino, povečane koncentracije kovin so segale povprečno do globine 50 cm. Koncentracije kovin v prašnih usedlinah za obdobje zadnjih dvanajstih let, kažejo, da so največje imisije na lokaciji Teharje Ježovnik v bližini železarne, sledijo ji Industrijska cona, Teharje Dimec in Lava. Za najmanj onesnaženo mesto pa velja lokacija Lopata, ki je najbolj oddaljena od virov emisij in kjer tako v tleh, kot v zraku mejne vrednosti niso nikoli presežene. Povezave med količino težkih kovin v lovilcih prašnih delcev ter njihovo količino v tleh, nismo zaznali.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [L. Koželj], dec. 2009Language - slovenianCOBISS.SI-ID - 6222713
Author
Koželj, Lea
Other authors
Zupančič, Nina, 1963- |
Grčman, Helena
Topics
onesnaženost tal |
težke kovine |
Celje |
cink |
kadmij |
svinec |
analize tal
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Library | Call number – location, accession no. ... | Copy status |
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NTF, Department of Geology, Lj. | Geologija D KOŽELJ Lea Vertikalna razp. IN: 000014669 |
available - outside loan, loan period: 14 days |
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Koželj, Lea | ![]() |
Zupančič, Nina, 1963- | 01384 |
Grčman, Helena | 16073 |
Source: Personal bibliographies
and: SICRIS
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