Determination of hexavalent chromium in textiles of daily use by ion chromatography and dermal risk assessment.

Autor: Bruzzoniti MC; Department of Chemistry, University of Torino, Via Pietro Giuria 7, 10125, Torino, Italy. Electronic address: mariaconcetta.bruzzoniti@unito.it., Schilirò T; Department of Public Health and Pediatrics, University of Torino, Via Santena, 5 bis, 10126, Torino, Italy. Electronic address: tiziana.schiliro@unito.it., Gea M; Department of Public Health and Pediatrics, University of Torino, Via Santena, 5 bis, 10126, Torino, Italy., Rivoira L; Department of Chemistry, University of Torino, Via Pietro Giuria 7, 10125, Torino, Italy.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2024 Feb 01; Vol. 242, pp. 117731. Date of Electronic Publication: 2023 Nov 24.
DOI: 10.1016/j.envres.2023.117731
Abstrakt: The determination of hexavalent chromium in textiles and clothes is challenging since during extraction, the original oxidation state should not be altered. Since, as a matter of fact, current analytical methods are focused only on total chromium determination, the purpose of this research is to develop a reliable analytical method for the determination of Cr(VI) in textiles and tissues of daily use for a reliable application of risk analysis models, which are usually based on total Cr data. After optimization, a 0.0025 M Na 3 PO 4 extraction solution was selected for the extraction of Cr(VI) from textiles. This solution minimizes possible interconversion redox reactions and interference, and provides good extraction recoveries (88.4 ± 2.5% - 105.5 ± 0.6 %, according to Cr(VI) concentration) and quantitation limits (0.017 mg/kg), fully complying the current limits set for Cr(VI) in textiles in contact with skin, and for leachable Cr(VI). The developed method was validated investigating intra-day repeatability (n = 10) and inter-day repeatability (n = 30) which were below 12%, and matrix effect which was below 6% confirming the precision of the method and the negligibility of a matrix interference during the whole analysis. The method, which was proved to be suited also for bioaccessibility studies in saliva and sweat, was applied to the analysis of tank top, coloured paper napkin, polyamide tights, panties, highlighting Cr(VI) content in the panties only at very low concentration (0.028 mg/kg). As verified by ECHA and US EPA approaches, this amount does not pose a non-carcinogenic risk for human health. As regards carcinogenic risk, considering both adult and child exposure, the dermal contact with the panties poses an acceptable risk (R ≤ 10 -6 ).
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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