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Title:Recent Progress and Applications of Thermal Lens Spectrometry and Photothermal Beam Deflection Techniques in Environmental Sensing
Authors:ID Franko, Mladen, LELS (Author)
ID Goljat, Leja, LELS (Author)
ID Liu, Mingqiang, LELS (Author)
ID Budasheva, Hanna, LELS (Author)
ID Žorž Furlan, Mojca, LELS (Author)
ID Korte, Dorota, LELS (Author)
Files:.pdf Recent_Progress_and_Applications_of_Thermal_Lens_Spectrometry_and_Photothermal_Beam_Deflection_Techniques_in_Environmental_Sensing.pdf (2,90 MB)
MD5: 009EBA421D45B0B0D8DA086B4837452E
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:This paper presents recent development and applications of thermal lens microscopy (TLM) and beam deflection spectrometry (BDS) for the analysis of water samples and sea ice. Coupling of TLM detection to a microfluidic system for flow injection analysis (µFIA) enables the detection of microcystin-LR in waters with a four samples/min throughput (in triplicate injections) and provides an LOD of 0.08 µg/L which is 12-times lower than the MCL for microcystin-LR in water. µFIA-TLM was also applied for the determination of total Fe and Fe(II) in 3 µL samples of synthetic cloudwater. The LODs were found to be 100 nM for Fe(II) and 70 nM for total Fe. The application of µFIA-TLM for the determination of ammonium in water resulted in an LOD of 2.3 µM for injection of a 5 µL sample and TLM detection in a 100 µm deep microfluidic channel. For the determination of iron species in sea ice, the BDS was coupled to a diffusive gradient in the thin film technique (DGT). The 2D distribution of Fe(II) and total Fe on DGT gels provided by the BDS (LOD of 50 nM) reflected the distribution of Fe species in sea ice put in contact with DGT gels.
Keywords:thermal lens microscopy, beam deflection spectrometry, microfluidic system, microcystin-LR detection, iron species determination, ammonium detection
Article version:Publisher's version of article
Year of publishing:2023
Number of pages:17
PID:20.500.12556/RUNG-7822 New window
COBISS.SI-ID:135854851 New window
DOI: s23010472 New window
Publication date in RUNG:03.01.2023
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Record is a part of a journal

Shortened title:Sensors
Year of publishing:2023


License:CC BY-NC-SA 4.0, Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
Description:A Creative Commons license that bans commercial use and requires the user to release any modified works under this license.
Licensing start date:02.01.2023