1. Ohranjanje biotske raznovrstnosti : študijska gradiva pri predmetu Ohranjanje biotske raznovrstnosti (5 vsebinskih sklopov)Lado Kutnar, 2024, drugo učno gradivo Ključne besede: biotska raznovrstnost, ohranitvena biologija, izumiranje vrst, ravni biotske raznovrstnosti, genetska pestrost, vrstna pestrost, ekosistemska in krajinska pestrost, dejavniki ogrožanja, onesnaženje okolja, invazivne tujerodne vrste, podnebne spremembe, degradacija habitatov, fragmentacija habitatov, mehanizmi ohranjanja biotske raznovrstnosti, rdeči seznam vrst, zavarovane vrste, Natura 2000, Slovenija Objavljeno v DiRROS: 03.04.2024; Ogledov: 62; Prenosov: 0 |
2. Preparation and characterization of the sulfur-impregnated natural zeolite clinoptilolite for Hg(II) removal fromaqueous solutionsMarin Ugrina, Martin Gaberšek, Aleksandra Daković, Ivona Nuić, 2021, izvirni znanstveni članek Povzetek: Sulfur-impregnated zeolite has been obtained from the natural zeolite clinoptilolite by chemical modification with Na2S at 150 °C. The purpose of zeolite impregnation was to enhance the sorption of Hg(II) from aqueous solutions. Chemical analysis, acid and basic properties determined by Bohem’s method, chemical behavior at different pHo values, zeta potential, cation-exchange capacity (CEC), specific surface area, X-ray powder diffraction (XRPD), scanning electron microscopy with energy-dispersive X-ray analysis (SEM-EDS), Fourier transform infrared spectroscopy (FTIR), as well as thermogravimetry with derivative thermogravimetry (TG-DTG) were used for detailed comparative mineralogical and physico-chemical characterization of natural and sulfur-impregnated zeolites. Ključne besede: zeolit, klinoptilolit, živo srebro, onesnaženje okolja Objavljeno v DiRROS: 03.03.2022; Ogledov: 606; Prenosov: 263 Celotno besedilo (6,88 MB) |
3. Distribution of Pb, Zn and Cd in stream and alluvial sediments in the area with past Zn smelting operationsGorazd Žibret, Barbara Čeplak, 2021, izvirni znanstveni članek Povzetek: The sources of Zn, Pb and Cd in alluvial and stream sediments have been studied in the area of historical Zn smelting tradition. 30 samples of stream sediments and samples from 4 alluvial sediment profiles were collected. Fractions 0.125–0.063 and < 0.063 mm were analysed by the means of ICP-MS prior 4-acid digestion. The highest levels of Zn, Cd and Pb were detected in the alluvial sediments in the closest vicinity to the abandoned slag and ore roasting residue waste dumps, reaching 96 and 4520 mg/kg, 522 and 26,800 mg/kg and 3.7 and 31 mg/kg for Pb, Zn and Cd in stream and alluvial sediments, respectively. The Voglajna River then transports contamination particles into the Savinja River, which afterwards flows into the Sava River. Consequently, the anomaly can even be detected in the Sava River, more than 30 km downstream. Higher levels of Pb, Zn and Cd have been found in fraction < 0.063 mm compared to 0.125–0.063 mm fraction. Impacts of historically contaminated soil erosion and in particular the wash-out of Zn-smelting waste from the improperly managed waste dump were recognised as the dominant sources of Zn, Cd and Pb in the stream and alluvial sediments. Ključne besede: onesnaženje okolja, rečni sedimenti, porazdelitev elementov, topilništvo Objavljeno v DiRROS: 03.03.2022; Ogledov: 598; Prenosov: 218 Celotno besedilo (1,76 MB) |
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7. Degradirana gozdna tla in vegetacijaJože Sušin, 1982, končno poročilo o rezultatih raziskav Ključne besede: gozdarstvo, gozd, tla, streljarjenje, degradacija tal, talni tipi, dušik, kemične lastnosti tal, onesnaženje, tla, fluor Objavljeno v DiRROS: 12.07.2017; Ogledov: 2588; Prenosov: 599 Celotno besedilo (649,45 KB) |
8. Degradirana gozdna tla in vegetacijaJože Sušin, 1979, končno poročilo o rezultatih raziskav Ključne besede: gozdarstvo, gozd, tla, streljarjenje, degradacija tal, talni tipi, dušik, kemične lastnosti tal, onesnaženje, tla, fluor Objavljeno v DiRROS: 12.07.2017; Ogledov: 3054; Prenosov: 637 Celotno besedilo (1,93 MB) |
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