Recent progresses in compound specific isotope analysis of halogenated persistent organic pollutants. Assessing the transformation of halogenated persistent organic pollutants at contaminated sites.

Autor: Badea SL; National Research and Development Institute for Cryogenic and Isotopic Technologies, 4(th) Uzinei Street, 240050 Râmnicu Vâlcea, Romania. Electronic address: silviu.badea@icsi.ro., Niculescu VC; National Research and Development Institute for Cryogenic and Isotopic Technologies, 4(th) Uzinei Street, 240050 Râmnicu Vâlcea, Romania., Popescu Stegarus DI; National Research and Development Institute for Cryogenic and Isotopic Technologies, 4(th) Uzinei Street, 240050 Râmnicu Vâlcea, Romania., Geana EI; National Research and Development Institute for Cryogenic and Isotopic Technologies, 4(th) Uzinei Street, 240050 Râmnicu Vâlcea, Romania., Ciucure CT; National Research and Development Institute for Cryogenic and Isotopic Technologies, 4(th) Uzinei Street, 240050 Râmnicu Vâlcea, Romania., Botoran OR; National Research and Development Institute for Cryogenic and Isotopic Technologies, 4(th) Uzinei Street, 240050 Râmnicu Vâlcea, Romania., Ionete RE; National Research and Development Institute for Cryogenic and Isotopic Technologies, 4(th) Uzinei Street, 240050 Râmnicu Vâlcea, Romania.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2023 Nov 15; Vol. 899, pp. 165344. Date of Electronic Publication: 2023 Jul 04.
DOI: 10.1016/j.scitotenv.2023.165344
Abstrakt: Compound specific isotope analysis was extensively used to characterise the environmental processes associated with the abiotic and biotic transformation of persistent halogenated organic pollutants including those of contaminants of emerging concern (CECs). In the last years, the compound specific isotope analysis was applied as tool to evaluate the environmental fate and was expanded to larger molecules like brominated flame retardants and polychlorinated biphenyls. Multi-element (C, H, Cl, Br) CSIA methods have been also employed both in laboratory and field experiments. Nevertheless, despite the instrumental advances of isotope ratio mass spectrometers systems, the instrumental detection limit for gas chromatography-combustion-isotope ratio mass spectrometer (GC-C-IRMS) systems is challenging, especially when it is utilized to δ 13 C analysis. Liquid chromatography-combustion isotope ratio mass spectrometry methods are challenging, taking into consideration the chromatographic resolution required when analysing complex mixtures. For chiral contaminants, enantioselective stable isotope analysis (ESIA) has turned up as alternative approach but, up to now, it has been used for a limited number of compounds. Taking into consideration the occurrence of new emerging halogenated organic contaminants, new GC and LC methods for non-target screening using high resolution mass spectrometry are needed to be developed prior to the compound specific isotope analysis (CSIA) methods.
Competing Interests: Declaration of competing interest The authors have no conflict of interests.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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