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2. Acta chimica slovenica2000, not set Abstract: Acta Chimica Slovenica (ACSi) is an international, peer-reviewed and Open Access journal. It provides a forum for the publication of original scientific research in all fields of chemistry and closely related areas. Reviews, feature, scientific and technical articles, and short communications are welcome.
In the appendix, the journal publishes book reviews, industrial achievements, announcements, and Society news.
Articles in ACSi are published under the Creative Commons Attribution 4.0 International License.
Keywords: kemija, znanstveni članki, raziskave
Published in DiRROS: 10.06.2025; Views: 779; Downloads: 206
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3. Mixtures of Chemical Pollutants at European Legislation Safety Concentrations: How Safe are They?Raquel Negrão Carvalho, Augustine Aruqwe, Selim Ait-Aissa, Anne Bado-Nilles, Stefania Balzamo, Anders Baun, Shimshon Belkin, Ludek Blaha, Francois Brion, Daniela Conti, Vesna Flander-Putrle, Valentina Turk, 2014, original scientific article Abstract: The risk posed by complex chemical mixtures in the environment to wildlife and humans is increasingly debated, but has been rarely tested under environmentally relevant scenarios. To address this issue, two mixtures of 14 or 19 substances of concern (pesticides, pharmaceuticals, heavy metals, polyaromatic hydrocarbons, a surfactant, and a plasticizer), each present at its safety limit concentration imposed by the European legislation, were prepared and tested for their toxic effects. The effects of the mixtures were assessed in 35 bioassays, based on 11 organisms representing different trophic levels. A consortium of 16 laboratories was involved in performing the bioassays. The mixtures elicited quantifiable toxic effects on some of the test systems employed, including i) changes in marine microbial composition, ii) microalgae toxicity, iii) immobilization in the crustacean Daphnia magna, iv) fish embryo toxicity, v) impaired frog embryo development, and vi) increased expression on oxidative stress-linked reporter genes. Estrogenic activity close to regulatory safety limit concentrations was uncovered by receptor-binding assays. The results highlight the need of precautionary actions on the assessment of chemical mixtures even in cases where individual toxicants are present at seemingly harmless concentrations.
Keywords: morje, analizna kemija, biologija, evtrofikacija, hranilne snovi, fitoplankton, onesnaževanje, Piranski zaliv
Published in DiRROS: 02.08.2024; Views: 1652; Downloads: 945
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4. Elektrolitsko markiranje farmakov z [sup]99mTCIN[sup]131JBoris Pihlar, M. Erjavec, Jože Marsel, 1979, original scientific article Keywords: analizna kemija, radiokemija, elektrokemija, elektrolitsko markiranje, biološka aktivnost, radioizotopi, tehnecij, jod
Published in DiRROS: 14.09.2023; Views: 1251; Downloads: 365
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5. Ultrafiltracija vodnih lužilVekoslav Mihevc, Vesna Tišler, Matjaž Kunaver, Darja Kornhauzer, 1994, original scientific article Abstract: V članku je opisana možnost čiščenja odpadnih vod, ki nastanejo pri luženju lesa z vodnimi lužili in sicer z ultrafiltracijo. Ultrafiltrirali smo simulirano odpadno vodo vodnega lužila in proučevali kvaliteto retentata in permeata.
Keywords: kemija, kemijska tehnologija, kemično inženirstvo, odpadne vode, čiščenje, vodna lužila, ultrafiltracija
Published in DiRROS: 29.08.2023; Views: 1489; Downloads: 465
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6. Preliminary chemical and mineralogical characterization of tailings from base metal sulfide deposits in Serbia and North MacedoniaTimotheus Martin Christoph Steiner, Viktor Bertrandsson Erlandsson, Robert Šajn, Frank Melcher, 2022, original scientific article Abstract: Tailings of old mines often contain metals, which were not of economic interest or could not be recovered with the existing technology at the time of active mining. This is especially true for metals that often occur as by-products in Cu-Pb-Zn-(Ag-Au) ores as Sb, Mo, Ge, and In. A fundamental characterization of some tailings is presented in terms of their mineralogy and content of valuable metals which could be extracted to finance a possible remediation and improve the supply of the EU with critical metals. Tailings from active and abandoned mines in Serbia (Bor, porphyry Cu/Au; Krivelj, porphyry Cu/Au; Blagodat, hydrothermal Pb-Zn; Lece, epithermal Au; Rudnik, hydrothermal/skarn Pb-Zn) and North Macedonia (Sasa, Pb-Zn; Probištip, Pb-Zn; Bučim, porphyry Cu; Lojane, fault-bound vein-type low-temperature As, Sb, Cr at the contact of rhyolite and serpentinite) were studied. Analysis for major and trace elements used a multi-method approach (lithium borate fusion and ICP-MS/OES analysis, gravimetric analysis, instrumental neutron activation analysis, total digestion ICP-OES, infrared spectroscopy) with mineral identification by scanning electron microscopy. Concentrations of the major commodity elements (Cu, Pb, Zn, Au, Ag) varies within several orders of magnitude depending on mineralogy and ore type. Critical metals (Co, Ga, Ge, Sb) contents are low with some exceptions. Some tailings contain moderate to elevated potentially toxic element levels (As, Cd, Pb, Tl). For the sample from Probištip which yielded the highest valuable metal concentrations (>5000 ppm Pb, 4020 ppm Zn), a heavy mineral concentrate of the sand size fraction (0.06 mm to 0.5 mm) was produced and analyzed by SEM and LA-ICP-MS for additional rare phases and trace elements. In all tailings studied, additional milling would be needed to separate ore from gangue minerals. Increasing metal prices might facilitate feasibility studies for some of the localities in the future, despite the limited quantitative information about the characterized tailings.
Keywords: rudniški odpadki, kemija, mineralogija, rudna nahajališča, sulfidi
Published in DiRROS: 22.11.2022; Views: 1661; Downloads: 572
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7. Analiza zraka v lakirnici s plinskim kromatografom in masnim spektrometromVekoslav Mihevc, Vesna Tišler, Matjaž Kunaver, Darja Kornhauzer, 1993, original scientific article Abstract: V članku je opisana analiza delovne atmosfere v lakirnici ene izmed pohištvenih proizvodenj v Sloveniji. Adsorbcija substanc iz zraka je potekala na aktivnem oglju, desorbcija pa s stresanjem v ogljikovem disulfidu. Z uporabo GC-MS metode smo v vzorcih določili prisotnost benzena, toulena, butacilena in izomer ksilena.
Keywords: kemija, kemijska tehnologija, kemijsko inženirstvo, ekologija, inverzna plinska kromatografija, interakcija sistemov, zrak, analiza, lakirnice, delovne razmere, masna spektrometrija, GC-MS metoda
Published in DiRROS: 12.07.2017; Views: 6092; Downloads: 2315
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