Iskalni niz:
išči po
išči po
išči po
išči po
Vrsta gradiva:
Jezik:
Št. zadetkov: 7
Aerobno jodohalogeniranje alkenov katalizirano z dušikovimi oksidi
Aleksander Kravos, Jernej Iskra
Diplomsko delo
Oznake: alkeni;halogeniranje;jodokloriranje alkenov;jodov(I) reagent;nitroksilni radikali;aerobna oksidacija;diplomska dela;
Eden izmed preferenčnih ciljev sodobne organske sinteze je razvoj okolju sprejemljivejših sinteznih metod. Osrednja tema raziskovanja diplomskega dela je bilo zato raziskati aerobno halogeniranje alkenov z reakcijskim sistemom I2/HCl/NaNO2/O2, ki temelji na aktivaciji I2 z in-situ generiranjem jodir ...
Leto: 2019 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Exploration of novel solid-phase extraction modes for analysis of multiclass emerging contaminants
Aleksander Kravos, Helena Prosen
Izvirni znanstveni članek
Oznake: novodobna organska onesnaževala;tehnike priprave vzorca;razvoj analiznih metod;off-line SPE;on-line SPE;disperzivna mikro ekstrakcija na trdno fazo;contaminants of emerging concern;sample pretreatment;method development;dispersive micro solid-phase extraction;
Solid-phase extraction (SPE) has gained an essential role in environmental analytical chemistry. Classic off-line SPE coupled with LC-MS/MS systems creates powerful analytical procedures for ultratrace analysis of contaminants of emerging concern (CECs) in water. But, being associated with tedious w ...
Leto: 2024 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Cardiovascular drugs as water contaminants and analytical challenges in the evaluation of their degradation
Aleksander Kravos, Andreja Žgajnar Gotvajn, Helena Prosen
Pregledni znanstveni članek
Oznake: LC-MS;ozonacija;zdravila;strukturna identifikacija;transformacijski produkti;odpadne vode;ozonation;pharmaceuticals;structural elucidation;transformation products;wastewater;
Cardiovascular drugs have been a burning topic in the field of environmental analytical chemistry in the last few decades. Growing modern healthcare has led to the widespread use of pharmaceuticals. Among these, antihypertensives (sartans, angiotensin-converting enzyme inhibitors) and lipid-regulati ...
Leto: 2024 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Determination of dissolved iron redox species in freshwater sediment using DGT technique coupled to BDS
Hanna Budasheva, Aleksander Kravos, Dorota Korte Kobylinska, Arne Bratkič, Yue Gao, Mladen Franko
Izvirni znanstveni članek
Oznake: beam deflection spectroscopy;diffusive gradients;thin-film techniques;iron redox species;photothermal techniques;sediments;
In this work we have developed a novel method for determination of iron redox species by the use of diffusive gradients in thin-film (DGT) technique coupled to photothermal beam deflection spectroscopy (BDS). The combination of both methods achieved low limit of detection (LOD) of 0.14 μM for Fe (II ...
Leto: 2019 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
Kemijsko in ekotoksikološko spremljanje induciranih in naravnih abiotskih razkrojnih procesov fenolnih onesnaževal
Aleksander Kravos, Helena Prosen, Gabriela Kalčíková, Romana Cerc Korošec, Irena Kralj Cigić
Magistrsko delo
Oznake: površinske vode;onesnaževanje vodnega okolja;fenol;klorofenoli;čiščenje vod;fotokataliza;titanov dioksid;ozonacija;anodna elektrooksidacija;instrumentalna analiza;produkti razgradnje;kromatografske metode;ekotoksikološki testi;Daphnia magna;magistrska dela;
Pereča okoljska problematika sistemske onesnaženosti površinskih vod z obstojnimi organskimi mikroonesnaževali je v znanosti pospešila razvoj novih integralnih pristopov čiščenja vod na osnovi naprednih oksidacijskih procesov. Vzporedno s tem pa tudi težnje po razumevanju njihove usode, pretvorb in ...
Leto: 2021 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Impact of accumulation of organic acids on the degradation of cellulose in historic paper
Ida Kraševec, Aleksander Kravos, Klara Retko, Irena Kralj Cigić, Matija Strlič, Hend Mahgoub
Izvirni znanstveni članek
Oznake: celuloza;kislost;oksalna kislina;Ramanska spektroskopija;znanost o dediščini;konserviranje;cellulose;acidity;oxalic acid;Raman spectroscopy;heritage science;conservation;
The acidity of historic paper, a property crucial for its preservation, is thought to mainly depend on the type of sizing. However, this research shows that during its degradation, paper acidity increases mainly due to the formation of non-volatile carboxylic acids, which accelerate acid-catalysed h ...
Leto: 2025 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Combined analytical study on chemical transformations and detoxification of model phenolic pollutants during various advanced oxidation treatment processes
Aleksander Kravos, Andreja Žgajnar Gotvajn, Urška Lavrenčič Štangar, Borislav N. Malinović, Helena Prosen
Izvirni znanstveni članek
Oznake: klorofenoli;fenol;elektroksidacija;ozonacija;fotokataliza;fotooksidacija;plinska kromatografija;tekočinska kromatografija;ionska kromatografija;masna spektrometrija;celokupni organski ogljik;ekotoksikologija;Daphnia magna;chlorophenols;phenol;electrooxidation;ozonation;photocatalysis;photooxidation;gas chromatography;liquid chromatography;ion chromatography;mass spectrometry;total organic carbon;ecotoxicology;
Advanced oxidation processes (AOPs) have been introduced to deal with different types of water pollution. They cause effective chemical destruction of pollutants, yet leading to a mixture of transformation by-products, rather than complete mineralization. Therefore, the aim of our study was to under ...
Leto: 2022 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Št. zadetkov: 7
Ključne besede:
Leto izdaje:
Avtorji:
Repozitorij:
Tipologija:
Jezik: