INVESTIGADORES
LANA Nerina Belen
artículos
Título:
Fingerprint of persistent organic pollutants in tissues of Antarctic notothenioid fish
Autor/es:
LANA, N.B.; BERTON, P.; ADRIAN COVACI; NÉSTOR F. CIOCCO; ESTEBAN BARRERA OROS; ADRIAN ATENCIO; JORGELINA C. ALTAMIRANO
Revista:
SCIENCE OF THE TOTAL ENVIRONMENT
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2014 vol. 499 p. 89 - 98
ISSN:
0048-9697
Resumen:
In the
present work, persistent organic pollutants (POPs), such as polychlorinated biphenyls
(PCBs), dichlorodiphenyltrichloroethane (DDT) and metabolites, polybrominated diphenyl
ethers (PBDEs), and hexachlorocyclohexane (HCH) were analyzed in three Antarctic
notothenioids fish species: Trematomus newnesi
(TRN), Notothenia coriiceps (NOC) and
Notothenia rossii (NOR). The
contribution of each POP-family to the total load was as follows: SPCB (40%) >SDDT (27%) >SPBDEs (23%) >SHCH (10%). Among the 23 PCB congeners analyzed, penta-CBs homologues were the prevalent
group, followed by hexa-CBs and hepta-CBs. DDT and its metabolites
presented the following trend: p,p'-DDT
> p,p'-DDE ~ p,p'-DDD. PBDE
profile was dominated by BDE-47 and BDE-99 congeners, followed by BDE-100 >
BDE-28 > BDE-154, BDE-153. Among HCHs, the γ-HCH isomer was detected in all samples, constituting 69%
total HCH load, while α-HCH and β-HCH contributions were 15% and 16%,
respectively.
The levels
of POPs reported here suggest that NOR and NOC are more susceptible to
accumulate the analyzed contaminants than TRN, a species not previously
analyzed for POPs.
Distribution of POPs among
different tissues of the three species (muscle, liver, gonads, and gills) was also
investigated. Considering lipid weight, the general pattern of POPs distribution in tissues indicated that while gonads showed higher levels
of PCBs, DDTs and HCH, the most
significant PBDE concentrations were recorded in gills. Also, a comparative analysis of POPs concentration in fish
samples from Antarctic area was included.