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Fluorescence and naked-eye detection of Pb2+ in drinkingwater using a low-cost ionophore based sensing scheme
Sensor Visions AB, Sweden.
RISE - Research Institutes of Sweden, Bioscience and Materials, Chemistry and Materials.ORCID iD: 0000-0001-6383-8319
2018 (English)In: Chemosensors, ISSN 2227-9040, Vol. 6, no 4, article id 51Article in journal (Refereed) Published
Abstract [en]

Drinking water contamination of lead from various environmental sources, leaching consumer products, and intrinsic water-pipe infrastructure is still today a matter of great concern. Therefore, new highly sensitive and convenient Pb2+ measurement schemes are necessary, especially for in-situ measurements at a low cost. Within this work dye/ionophore/Pb2+ co-extraction and effective water phase de-colorization was utilized for highly sensitive lead measurements and sub-ppb naked-eye detection. A low-cost ionophore Benzo-18-Crown-6-ether was used, and a simple test-tube mix and separate procedure was developed. Instrumental detection limits were in the low ppt region (LOD = 3, LOQ = 10), and naked-eye detection was 500 ppt. Note, however, that this sensing scheme still has improvement potential as concentrations of fluorophore and ionophore were not optimized. Artificial tap-water samples, leached by a standardized method, demonstrated drinking water application. Implications for this method are convenient in-situ lead ion measurements.

Place, publisher, year, edition, pages
2018. Vol. 6, no 4, article id 51
Keywords [en]
Benzo-18-Crown-6-ether, Drinking water, Fluorescence detection, Ionophore, Lead ions
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-37024DOI: 10.3390/chemosensors6040051Scopus ID: 2-s2.0-85059237254OAI: oai:DiVA.org:ri-37024DiVA, id: diva2:1280052
Available from: 2019-01-17 Created: 2019-01-17 Last updated: 2019-06-18Bibliographically approved

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Strömberg, Niklas

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