Water and sediment toxicity and hazard assessment of DCOIT towards neotropical marine organisms

Campos, Bruno Galvão de; Moreira, Lucas Buruaem; G.F.E., Pauly; Cruz, Ana Paula Capuano da; Perina, Fernando César; Abreu, Filipa; Fillmann, Gilberto; Abessa, Denis Moledo de Souza

doi:10.1016/j.envpol.2023.121797

Cited by 6 publications

(1 citation statement)

References 51 publications

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“…In turn, Willingham & Jacobson [30] showed that Lepomis macrochirus fish rapidly internalized and degraded DCOIT for 49 days. Our results also indicate rapid uptake followed by biotransformation; however, as demonstrated by Chen & Lam [4] in their review, even short-term exposure to DCOIT can cause negative effects at various levels of biological organization, which is corroborated by Campos et al [31]. In addition, our data indicate that in regions with a constant supply of DCOIT, such as harbors and marinas, DCOIT can bioaccumulate (as the uptake rate is greater than depuration).…”

Section: Dcoit Bioaccumulation Biomagnification and Trophic Transfersupporting

confidence: 84%

Bioaccumulation and Trophic Transfer of Soluble and Nanostructured Forms of a Commercial Antifouling Biocide

Campos,

Abessa,

Martins

2024

Preprint

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After the ban on tributyltin-based antifouling paints, DCOIT (4,5-Dichloro-2-octylisothiazol-3(2H)-one) became one of the most used antifouling biocides. DCOIT is a pseudo-persistent contaminant in port areas and is toxic to non-target species, but its ability to bioaccumulate and be transferred along the trophic chain remains unknown. This study aimed to preliminarily investigate the bioaccumulation, trophic transfer, and biomagnification of DCOIT and SiNC-DCOIT (DCOIT immobilized in silica mesoporous nanocapsules) from the microalga Tetraselmis chuii to the mussel Mytilus galloprovincialis during exposure experiments considering 24 h of uptake followed by 72 h depuration. Mussels rapidly internalized and metabolized both DCOIT and SiNC-DCOIT. The predator-prey biomagnification factors (BMFTL) suggested that both forms of the biocide can be trophically transferred, with higher concentrations of DCOIT and SiNC-DCOIT in mussels than in microalgae (BMFTL &gt; 1). However, the bioaccumulation and bioconcentration factors indicated a low bioaccumulation capability in the short term, suggesting that the depuration rate overcomes the uptake. Our findings contribute to the development of environmental risk assessments for DCOIT and SiNC-DCOIT, but do not exclude the possibility of DCOIT bioaccumulation in the long-term in areas with constant input of DCOIT. Further studies are needed to understand these processes under continuous exposure scenarios to DCOIT.

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Section: Dcoit Bioaccumulation Biomagnification and Trophic Transfersupporting

confidence: 84%

Bioaccumulation and Trophic Transfer of Soluble and Nanostructured Forms of a Commercial Antifouling Biocide

Campos,

Abessa,

Martins

2024

Preprint

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Coupling harmful algae derived nitrogen and sulfur co-doped carbon nanosheets with CeO2 to enhance the photocatalytic degradation of isothiazolinone biocide

Hu,

Chen,

et al. 2024

Journal of Environmental Management

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Advanced Multi-functional polyurethane sponge with excellent salt Resistant, Antifouling and Oil-Water separation capabilities for highly efficient and Persistent solar desalination

Gong,

Cao,

Wang

et al. 2025

Separation and Purification Technology

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Water and sediment toxicity and hazard assessment of DCOIT towards neotropical marine organisms

Cited by 6 publications

References 51 publications

Bioaccumulation and Trophic Transfer of Soluble and Nanostructured Forms of a Commercial Antifouling Biocide

Bioaccumulation and Trophic Transfer of Soluble and Nanostructured Forms of a Commercial Antifouling Biocide

Coupling harmful algae derived nitrogen and sulfur co-doped carbon nanosheets with CeO2 to enhance the photocatalytic degradation of isothiazolinone biocide

Advanced Multi-functional polyurethane sponge with excellent salt Resistant, Antifouling and Oil-Water separation capabilities for highly efficient and Persistent solar desalination

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