A green procedure for the determination of bioavailable forms of aluminum in natural waters by electrothermal atomic absorption spectroscopy combined with microextraction technique.

Autor: Mariychuk R; Department of Ecology, University of Presov, 17 November Street 1, 08116, Presov, Slovak Republic., Sukharev S; Department of Ecology and Environment Protection, Uzhhorod National University, Narodna Square 3, Uzhhorod, 88000, Ukraine. ssukharev@ukr.net., Sukhareva O; Department of Analytical Chemistry, Uzhhorod National University, Narodna Square 3, Uzhhorod, 88000, Ukraine., Roman L; Department of Ecology and Environment Protection, Uzhhorod National University, Narodna Square 3, Uzhhorod, 88000, Ukraine., Babilia T; Transcarpathian Region Scientific Research Forensic Center of the Ministry of Internal Affairs of Ukraine, Slavyanska Naberezhna 25, Uzhhorod, 88000, Ukraine.
Jazyk: angličtina
Zdroj: Environmental geochemistry and health [Environ Geochem Health] 2024 Sep 24; Vol. 46 (11), pp. 444. Date of Electronic Publication: 2024 Sep 24.
DOI: 10.1007/s10653-024-02230-w
Abstrakt: Aluminum is a prevalent element in nature, but bioavailable forms of aluminum are toxic to plants, animals, and humans. The present study is dedicated to the development of an ecologically friendly, fast, simple, reliable, sensitive, and accurate improved procedure for the determination of subtrace concentrations of bioavailable forms of aluminum in natural waters. The procedure includes the separation and pre-concentration of bioavailable forms of aluminum using vortex-assisted liquid-liquid microextraction (VALLME) of ionic associates with salicylaldehyde 4-picolinhydrazone (SAPH) and sodium dodecyl sulfate (DDSNa) by isoamylacetate (200 μl) and direct electrothermal atomic absorption spectroscopy (ET AAS). The SAPH reagent interacts only with water-soluble forms of aluminum. SAPH is used for the pre-concentration of bioavailable forms of aluminum as well as a chemical modifier; it increases the absorbance and the precision of the analytical signal of aluminum. The calibration curve shows the linear dependence in the range of 0.05-86 μg⋅L -1 of the aluminum concentration (R 2  = 0.992), with the limit of detection at 0.015 μg⋅L -1 and the limit of quantification at 0.05 μg⋅L -1 . The accuracy of the proposed procedure for bioavailable forms of aluminum determination was verified on model solutions and against a reference method on natural samples of river and lake waters (RSD 3.2-5.2%, recovery 97.1-103.4%).
(© 2024. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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