1. Photocatalytic properties of metal modified TiO2 by photothermal techniquesMladen Franko, Dorota Korte, Urška Lavrenčič Štangar, Olena Pliekhova, Humberto Cabrera, Zeinab Ebrahimpour, 2018, objavljeni povzetek znanstvenega prispevka na konferenci Najdeno v: ključnih besedah Povzetek najdenega: ...Thermal lens spectrometry, Photothermal beam deflection spectroscopy, Dye remediation, Photothermal technique, Photocatalyti... Ključne besede: Thermal lens spectrometry, Photothermal beam deflection spectroscopy, Dye remediation, Photothermal technique, Photocatalytic degradation, Reactive Blue 19, TiO2 modification Objavljeno: 09.11.2018; Ogledov: 1019; Prenosov: 0
Polno besedilo (208,76 KB) |
2. Determination of bioavailable Fe redox fractions of sediment pore waters by DGT passive sampling and BDS detectionMladen Franko, Arne Bratkič, Dorota Korte, Hanna Budasheva, 2019, objavljeni povzetek znanstvenega prispevka na konferenci Opis: The bioavailability and toxicity of contaminants in sediments to benthic organisms depend on the speciation of the contaminant [1]. The level of iron supply to sediments creates contrasting chemical pathways, each producing distinctive mineral assemblag- es. Reliable measurement of Fe redox species (Fe2+ and Fe3+) in sediments is essential for studies of pollutants or trace-element cycling. This is, however, a difficult task, because the distribution of chemical species often changes during sampling and storage.
In this work the Diffusive Gradients in Thin-films technique (DGT) is investigated as a passive sampling approach used in combination with photothermal beam deflection spectroscopy (BDS) as a detection method for determination of labile Fe-redox species in sediments and natural waters. DGT offers the advantage of pre-concentration of labile (i.e. bioavailable) Fe species from the total dissolved Fe pool in sediment pore waters [2]. The advantage of using BDS [3-4] is also in avoiding contamination by using additional steps as extraction or pre-concentration. Furthermore, combined DGT-BDS provides 2D information about distribution of Fe2+ and the total Fe content in the resin hydrogels [5].
The goal of this research is to show the repeatability of this technique for determining trace amounts of Fe redox species in environmental samples. Najdeno v: ključnih besedah Povzetek najdenega: ...sampling approach used in combination with photothermal beam deflection spectroscopy (BDS) as a detection method... ...beam deflection spectrometry, diffusive gradients in thin-films, iron species... Ključne besede: beam deflection spectrometry, diffusive gradients in thin-films, iron species Objavljeno: 16.07.2019; Ogledov: 775; Prenosov: 0
Polno besedilo (29,60 MB) |
3. Effect of bead size in Chelex-based resin hydrogels in DGT on detection of Fe redox species by beam deflection spectroscopyDorota Korte, Arne Bratkič, Hanna Budasheva, Mladen Franko, 2019, objavljeni povzetek znanstvenega prispevka na konferenci Najdeno v: ključnih besedah Povzetek najdenega: ...Diffusive Gradients in Thin Films, Beam Deflection Spectrometry, iron species, resin hydrogels... Ključne besede: Diffusive Gradients in Thin Films, Beam Deflection Spectrometry, iron species, resin hydrogels Objavljeno: 25.09.2019; Ogledov: 714; Prenosov: 0
Polno besedilo (1,28 MB) |
4. Developing DGT technique for determination of iron redox species by photothermal beam deflection spectrometryYue Gao, Dorota Korte, Chang Zhou, Arne Bratkič, Hanna Budasheva, Mladen Franko, Bruno Delille, 2019, objavljeni povzetek znanstvenega prispevka na konferenci Najdeno v: ključnih besedah Ključne besede: Diffusive Gradients in Thin Films, Beam Deflection Spectrometry, iron redox species Objavljeno: 25.09.2019; Ogledov: 751; Prenosov: 0
Polno besedilo (1,28 MB) |
5. Determination of Fe(III) and Fe(II) in natural waters using passive DGT samplers and non-destructive BDS analysisArne Bratkič, Dorota Korte, Hanna Budasheva, Mladen Franko, 2019, objavljeni povzetek znanstvenega prispevka na konferenci Najdeno v: ključnih besedah Povzetek najdenega: ... Beam Deflection Spectrometry, iron species, Diffusive Gradients in... Ključne besede: Beam Deflection Spectrometry, iron species, Diffusive Gradients in Thin-films, frequency scanning Objavljeno: 30.09.2019; Ogledov: 826; Prenosov: 0
Polno besedilo (19,45 MB) |