(UM)
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Biodostopnost in analiza vsebnosti kovin v vzorcih prsti : diplomsko deloGolub, DorisOnesnaževanje okolja predstavlja veliko nevarnost za ljudi, živali in rastlinstvo. Kovine, predvsem težke kovine, so tiste, ki so potencialno nevarne, saj se kopičijo v tleh in tako ogrožajo ... življenja ljudi, rastlin in živali. V industrijskih območjih je vsebnost kovin antropogenega izvora nekajkrat višja od naravnega ozadja. Pomemben del predstavlja biodostopna količina kovin, ki jih rastline preko koreninskega sistema vključujejo v svoj metabolizem. V diplomskem delu smo določali koncentracije biodostopnih kovin v vzorcih prsti z območja opuščenega rudnika. Za ekstrakcijo Cd, Cr, Cu, Fe, Na, Pb in Zn smo uporabili ekstrakcijsko mešanico DTPA, CaCl2 in TEA, s pH vrednostjo 7,3, ki iz vzorcev prsti ekstrahira zadostno količino biodostopnih kovin. Analizo vzorcev smo opravili s pomočjo atomske absorpcijske spektrometrije (AAS) in s pomočjo induktivno sklopljene plazme z masno spektrometrijo (ICP-MS). Dobljene rezultate smo ovrednotili in jih primerjali z zakonsko določenimi vrednostmi. Koncentracije večine elementov ne presegajo z zakonom določenih mej, medtem ko koncentracije nekaterih elementov nismo mogli določiti, saj so bile vrednosti pod mejo detekcije. V vzorcih prsti je bila vsebnost Fe in Na najvišja, saj je koncentracija Fe je znašala kar 2441,9 mg/kg suhe mase.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Maribor : [D. Golub], 2014Language - slovenianCOBISS.SI-ID - 20849416
Author
Golub, Doris
Other authors
Kolar, Mitja, kemik
Topics
Univerzitetna in visokošolska dela |
onesnaženost tal |
kovine |
biodostopnost |
ekstrakcija |
AAS |
ICP-MS |
diplomske naloge
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Library | Call number – location, accession no. ... | Copy status |
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Miklošič Library FPNM, Maribor | M DIPL 54 GOLUB D. Biodostopnost IN: 920140070 |
available - reading room |
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Golub, Doris | ![]() |
Kolar, Mitja, kemik | 16429 |
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