Saad, Dalia, Ramaremisa, Gibbon, Ndlovu, Michelle, Chauke, Patricia, Nikiema, Josiane et Chimuka, Luke.
2024.
« Microplastic abundance and sources in surface water samples of the Vaal River, South Africa ».
Bulletin of Environmental Contamination and Toxicology, vol. 112, nº 1.
Compte des citations dans Scopus : 11.
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Résumé
Microplastics (MPs) have emerged as a global environmental concern due to their persistent nature. In South Africa, microplastic research has primarily focused on marine systems. However, recent years have seen a shift in focus to studying MPs in South African freshwaters. In this study, MPs with a minimum size of 0.055 mm in surface water of the Vaal River, South Africa, were reported. MPs were 100% prevalent, with a mean numerical abundance of 0.68 ± 0.64 particles/m3. Smallsized MPs of < 1 mm accounted for the largest proportion. MPs were chemically identified as high-density polyethylene, low-density polyethylene, and polypropylene according to their Raman spectra. The prevalence of fragments (41.6%) and fibers (38.5%) over pellets (8.1%) indicates that microplastics are from secondary sources. The prevalence of polyethylene and polypropylene is consistent with microplastics being from secondary sources. These polymers are commonly used in single-use plastics, packing bags, textiles, and containers. These characteristics are of great concern due to their implications on the bioavailability and toxicological impacts of MPs. Consequently, these properties may pose more hazards to aquatic biota inhabiting the Vaal River.
| Type de document: | Article publié dans une revue, révisé par les pairs |
|---|---|
| Informations complémentaires: | Identifiant de l'article: 23 |
| Professeur: | Professeur Nikiema, Josiane |
| Affiliation: | Génie de la construction |
| Date de dépôt: | 20 août 2025 17:44 |
| Dernière modification: | 27 août 2025 16:34 |
| URI: | https://espace2.etsmtl.ca/id/eprint/31444 |
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