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© A-M. Pais-Correia, M-I. Thoulouze, A. Alcover, A. Gessain
Mise en évidence de structures de type "biofilm ", formées par le rétrovirus HTLV-1 générés par des cellules infectées (cellules du haut), qui ont été transmis à un autre lymphocyte (cellule du bas). Micrographie en microscopie électronique à balayage. Image colorisée.
Publication : Marine pollution bulletin

Assessment of polycyclic aromatic hydrocarbons in three environmental components from a tropical estuary in Northeast Brazil.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Marine pollution bulletin - 01 Oct 2021

Souza MRR, Suzarte JS, Carmo LO, Santos E, Soares LS, Júnior ARV, Santos LGGV, Krause LC, Damasceno FC, Frena M, Alexandre MR,

Link to Pubmed [PMID] – 34343757

Link to DOI – 10.1016/j.marpolbul.2021.112726S0025-326X(21)00760-8

Mar Pollut Bull 2021 Oct; 171(): 112726

The evaluation of occurrence, risk quotient (RQ), bioaccumulation factor (BAF), and sources of PAH was conducted in Sergipe-Poxim estuarine system. PAH distribution that ranged from 7.1 to 30.9 ng L-1 (surface water, SW), 5.4 to 19.5 ng g-1 (sediment, S), and 4.3 to 18.1 ng g-1 (oyster, O), characterized the environment with low contamination; 2-3 (SW), 5-6 (S), and 4 (O) PAH rings accounted for 54.5%, 68.7%, and 87.7%, respectively, along with naphthalene (SW), dibenzo(a,h)anthracene (S), and pyrene (O) as the prevailing compounds. PCA suggested the predominance of particular groups related to SW (LMW-PAH), S (HMW-PAH), and O (pyrene and fluoranthene). Furthermore, one sample of O presented a high PAH bioavailability as shown through the BAF, with emphasis on pyrene (BAF = 26.8). The RQ showed a low to moderate range in SW and S; hence, in-depth information about the possible toxic effect in organisms of this region is required.

https://pubmed.ncbi.nlm.nih.gov/34343757