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3. PHOTOTHERMAL-DEFLECTION SPECTROSCOPY FOR THE DETERMINATION OF THERMAL DIFFUSIVITY OF SOILS AND SOIL AGGREGATESMikhail A. Proskurnin, Dorota Korte, O.B. Rogova, D.S. Volkov, Mladen Franko, 2017, published scientific conference contribution abstract Found in: ključnih besedah
Keywords: PHOTOTHERMAL-DEFLECTION SPECTROSCOPY, THERMAL DIFFUSIVITY, soil, soil aggregates
Published: 30.08.2017; Views: 2813; Downloads: 0
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5. Photocatalytic properties of metal modified TiO2 by photothermal techniquesMladen Franko, Dorota Korte, Urška Lavrenčič Štangar, Olena Pliekhova, Humberto Cabrera, Zeinab Ebrahimpour, 2018, published scientific conference contribution abstract Found in: ključnih besedah
Summary of found: ...Thermal lens spectrometry, Photothermal beam deflection spectroscopy, Dye remediation, Photothermal technique, Photocatalytic degradation, Reactive...
Keywords: Thermal lens spectrometry, Photothermal beam deflection spectroscopy, Dye remediation, Photothermal technique, Photocatalytic degradation, Reactive Blue 19, TiO2 modification
Published: 09.11.2018; Views: 2245; Downloads: 0
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6. Determination of iron in natural waters using DGT technique coupled to phototermal beam deflection spectroscopyHanna Budasheva, Arne Bratkič, Dorota Korte, Mladen Franko, 2018, published scientific conference contribution abstract Found in: ključnih besedah
Keywords: Beam deflection spectroscopy, diffusive gradients in thin-films, iron species, photothermal techniques, natural waters.
Published: 09.11.2018; Views: 2246; Downloads: 0
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7. Optimization of DGT technique for determination of iron species in natural water and sediments by photothermal beam deflection spectroscopyMladen Franko, Dorota Korte, Arne Bratkič, Hanna Budasheva, 2018, published scientific conference contribution abstract Found in: ključnih besedah
Keywords: beam deflection spectroscopy, diffusive gradients in thin-film technique, iron redox species, photothermal techniques, natural water, sediments
Published: 23.11.2018; Views: 2364; Downloads: 0
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8. Determination of Dissolved Iron Redox Species in Freshwater Sediment using DGT Technique Coupled to BDSYue Gao, Arne Bratkič, Dorota Korte, Aleksander Kravos, Hanna Budasheva, Mladen Franko, 2019, original scientific article Abstract: 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) ions. The total Fe concentration determined in the Vrtojbica river sediment (Slovenia, Rožna Dolina, 5000 Nova Gorica) was 49.3 μgL–1. The Fe (II) and Fe (III) concentra- tion amounted to 12.8 μgL–1 and 39.9 μgL–1, respectively. Such an approach opens new opportunities for monitoring the content of iron species in natural waters and sediments and provides highly sensitive chemical analysis and an accurate qualitative and quantitative characteristic of the materials under study.
Found in: ključnih besedah
Summary of found: ...(DGT) technique coupled to photothermal beam deflection spectroscopy (BDS). The combination of both methods achieved...
Keywords: Beam deflection spectroscopy, diffusive gradients in thin-film technique, iron redox species, photothermal techniques, sediment
Published: 26.02.2019; Views: 2336; Downloads: 85
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9. Photothermal lens technique: a comparison between conventional and self-mixing schemesJohn Fredy Barrera Ramírez, Dorota Korte, Jose Juan Suárez-Vargas, Jehan Akbar, Evelio E. Ramírez-Miquet, Fatima Matroodi, Imrana Ashraf, Humberto Cabrera, Hanna Budasheva, Joseph J. Niemela, 2019, original scientific article Abstract: This work focuses on assessing the analytical capabilities of a new photothermal lens method based on the self-mixing effect to reliably measure metallic traces in water-ethanol solutions. We compare it with the conventional thermal lens scheme, considering the low detection limit and versatility. A theoretical model is presented to describe the laser power variations as a function of the photothermal parameters of the analyzed sample. The experimental results demonstrate that the laser intensity variations, induced by the external optical feedback, are governed by
the photothermal lens effect. Measurements of Fe(II)-1,10-phenanthroline in water–ethanol solutions show a favourable correspondence and agreement with the theory. The low detection limits obtained by the two analytic techniques also agree very well. Nevertheless, our instrument presents advantages regarding compactness and simplicity, suggesting that this platform could be potentially useful as a robust analytical tool for metallic trace detection. In addition, calibration of the method is performed by measuring the so-called self-mixing constant.
Found in: ključnih besedah
Summary of found: ...thermal lens, photothermal spectroscopy, self-mixing effect, trace detection...
Keywords: thermal lens, photothermal spectroscopy, self-mixing effect, trace detection
Published: 05.04.2019; Views: 2144; Downloads: 0
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