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Title:Determination of Iron in Environmental Water Samples by FIA-TLS
Authors:ID Tomšič, Miha, University of Nova Gorica (Author)
ID Goljat, Leja, University of Nova Gorica (Author)
ID Budasheva, Hanna, University of Nova Gorica (Author)
ID Korte, Dorota, University of Nova Gorica (Author)
ID Bratkič, Arne, Vrije Universiteit Brussel (Author)
ID Franko, Mladen, University of Nova Gorica (Author)
Files:.pdf 4825-39039-1-PB.pdf (690,39 KB)
MD5: 3F027F5CAA737CAC6949CD4EFA4843FB
 
Language:English
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:The determination of low concentration of iron in natural waters can be difficult due to the complexity of natural water, but primarily because it requires preconcentration of the sample with solvent extraction. In this work we report on results of thermal lens spectrometry (TLS) coupled to flow injection analysis (FIA) as a highly sensitive FIA-TLS method of iron detection. The concentration of iron redox species was determined using 1,10-phenanthroline (PHN), that forms stable complexes with Fe(II) ions which are characterized by an absorption maximum at 508 nm. The TLS system using a 633 nm probe laser and 530 nm pump laser beam was exploited for on-line detection in flow injection analysis, where a PHN solution was used as the carrier solution for FIA. The concentration of the complexing agent affects the quality of the TLS signal, and the optimal concentration was found at 1 mM PHN. The achieved limits of detection (LODs) for Fe(II) and total iron were 33 nM for Fe(II) and 21 nM for total iron concentration. The method was further validated by determining the linear concentration range, specificity in terms of analytical yield and by determining concentration of iron in a water sample from a local water stream.
Keywords:Flow injection analysis, iron concentration, thermal lens spectroscopy
Year of publishing:2019
Number of pages:814-820
Numbering:66, 4
PID:20.500.12556/RUNG-5190 New window
COBISS.SI-ID:551295 New window
NUK URN:URN:SI:UNG:REP:CERAD8JF
Publication date in RUNG:18.12.2019
Views:4714
Downloads:111
Metadata:XML DC-XML DC-RDF
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TOMŠIČ, Miha, GOLJAT, Leja, BUDASHEVA, Hanna, KORTE, Dorota, BRATKIČ, Arne and FRANKO, Mladen, 2019, Determination of Iron in Environmental Water Samples by FIA-TLS. the 24th Annual Meeting of the Slovenian Chemical Society [online]. 2019. Vol. 66, no. 4, p. 814–820. [Accessed 17 April 2025]. Retrieved from: https://repozitorij.ung.si/IzpisGradiva.php?lang=eng&id=4931
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Record is a part of a proceedings

Title:the 24th Annual Meeting of the Slovenian Chemical Society

Record is a part of a journal

Title:Acta Chimica Slovenica
Shortened title:ACSi
Year of publishing:2019
ISSN:1580-3155

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:18.12.2019

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