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Utilising Portable Laser-Induced Breakdown Spectroscopy for Quantitative Inorganic Water Testing

Schlatter, Nils ; Lottermoser, Bernd G. ; Illgner, Simon ; Schmidt, Stefanie (2024)
Utilising Portable Laser-Induced Breakdown Spectroscopy for Quantitative Inorganic Water Testing.
In: Chemosensors, 2023, 11 (9)
doi: 10.26083/tuprints-00024645
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Utilising Portable Laser-Induced Breakdown Spectroscopy for Quantitative Inorganic Water Testing
Language: English
Date: 16 January 2024
Place of Publication: Darmstadt
Year of primary publication: 2023
Place of primary publication: Basel
Publisher: MDPI
Journal or Publication Title: Chemosensors
Volume of the journal: 11
Issue Number: 9
Collation: 22 Seiten
DOI: 10.26083/tuprints-00024645
Corresponding Links:
Origin: Secondary publication DeepGreen

At present, the majority of water testing is carried out in the laboratory, and portable field methods for the quantification of elements in natural waters remain to be established. In contrast, portable instruments like portable X-ray fluorescence (pXRF) analysis and portable laser-induced breakdown spectroscopy (pLIBS) have become routine analytical methods for the quantification of elements in solids. This study aims to show that pLIBS can also be used for chemical compositional measurements of natural waters. Bottled mineral waters were selected as sample materials. A surface-enhanced liquid-to-solid conversion technique was used to improve the detection limits and circumvent the physical limitations in liquid analysis. The results show that low to medium mineralised waters can be analysed quantitatively for their ions using the documented method. For more highly concentrated samples, typically above an electrical conductivity (EC) of 1000 µS/cm, further adjustment is required in the form of self-absorption correction. However, water with a conductivity up to this limit can be analysed for the main cations (Li⁺, Na⁺, Mg²⁺, K⁺, Ca²⁺, and Sr²⁺) as well as the main anions (SO₄²⁻ and Cl⁻) using the documented method. This study demonstrates that there is significant potential for developing field-based pLIBS as a tool for quantitative water analysis.

Uncontrolled Keywords: portable laser-induced breakdown spectroscopy, pre-screening, handheld, inorganic water analysis, hydrochemistry, in-field water analysis, SciAps Z-300, water-quality testing
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-246452
Additional Information:

This article belongs to the Special Issue Advanced Real-Time On-Site Sensing Technologies in Food and Environment Analysis

Classification DDC: 500 Science and mathematics > 540 Chemistry
500 Science and mathematics > 550 Earth sciences and geology
Divisions: 11 Department of Materials and Earth Sciences > Earth Science > Hydrogeology
Date Deposited: 16 Jan 2024 13:09
Last Modified: 18 Jan 2024 10:08
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/24645
PPN: 514757094
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