Occurrence and speciation of chlorination byproducts in marine waters and sediments of a semi-enclosed bay exposed to industrial chlorinated effluents - Aix-Marseille Université Accéder directement au contenu
Article Dans Une Revue International Journal of Hygiene and Environmental Health Année : 2019

Occurrence and speciation of chlorination byproducts in marine waters and sediments of a semi-enclosed bay exposed to industrial chlorinated effluents

Occurrence et spéciation des sous-produits de chloration dans les eaux marines et les sédiments d'une baie semi-fermée exposée à des effluents industriels chlorés

Karine Lebaron
  • Fonction : Auteur
  • PersonId : 1034861
Maxime Verlande
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  • PersonId : 1034862
Carine Demelas
Laurent Vassalo
Gautier Revenko
  • Fonction : Auteur
  • PersonId : 1034863
Etienne Quivet

Résumé

Chlorination of seawater is one of the most effective technologies for industrial biofouling control. However, chlorination leads to the formation of halogenated chlorination byproducts (CBPs) associated with potential risks to environmental and human health. The present study investigated the occurrence and distribution of CBPs in the Gulf of Fos, a semi-enclosed bay where chlorinated effluents of multiple industrial plants are discharged. Seawater samples (surface and bottom) were collected at 24 sampling stations, with some near industrial outlets and others dispersed throughout the bay. Sediment samples were also collected at 10 sampling stations. Physicochemical parameters including water temperature, pH, salinity, bromide content, and free and total residual oxidant were determined. Several chemical classes of CBPs including trihalomethanes, haloacetic acids, haloacetonitriles, trihaloacetaldehydes, and halophenols were analyzed. Bromoform was the most abundant CBP in seawater, and it was detected at most of the sampling stations of the bay with highest concentrations occurring near the industrial effluent outlets. Dibromoacetic acid was the second most abundant CBP at most of the sites followed by dibromoacetonitrile. Other detected CBPs included tribromoacetic acid, bromochloroacetonitrile, and bromal hydrate. To our knowledge, the concentration of the latter CBP was reported here for the first time in the context of industrial seawater chlorination. In sediments, two bromine-containing halophenols (2-chloro-4-bromophenol and 2,4,6-tribromophenol) were detected at two sampling stations. Ecotoxicological assays and risk assessment studies based on the detected environmental concentrations are warranted to elucidate the impacts of marine CBP contamination.
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Dates et versions

hal-01845452 , version 1 (31-07-2018)

Identifiants

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Tarek Manasfi, Karine Lebaron, Maxime Verlande, Julien Dron, Carine Demelas, et al.. Occurrence and speciation of chlorination byproducts in marine waters and sediments of a semi-enclosed bay exposed to industrial chlorinated effluents. International Journal of Hygiene and Environmental Health, 2019, 222 (1), pp.1-8. ⟨10.1016/j.ijheh.2018.06.008⟩. ⟨hal-01845452⟩
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