[MARMAM] New paper about Nontargeted Analysis of Halogenated Organic Compounds in Bottlenose Dolphins from Brazil

Mariana Alonso alonso.mb at gmail.com
Thu Mar 9 06:35:57 PST 2017


Dear all,


On behalf of my co-authors, I am pleased to announce the publication of the
following article:



Mariana B. Alonso, Keith A. Maruya, Nathan G. Dodder, José Lailson-Brito,
Jr., Alexandre Azevedo, Elitieri Santos-Neto, Joao P. M. Torres, Olaf Malm
and Eunha Hoh (2017)

“*Nontargeted Screening of Halogenated Organic Compounds in Bottlenose
Dolphins (Tursiops truncatus) from Rio de Janeiro, Brazil”*

*Environ. Sci. Technol. 51, 1176−1185*

DOI: 10.1021/acs.est.6b04186



*Abstract:*

To catalog the diversity and abundance of halogenated organic compounds
(HOCs) accumulating in high trophic marine species from the southwestern
Atlantic Ocean, tissue from bottlenose dolphins (*Tursiops truncatus*)
stranded or incidentally captured along the coast of Rio de Janeiro,
Brazil, were analyzed by a nontargeted approach based on GCxGC/TOFMS. A
total of 158 individual HOCs from 32 different structural classes were
detected in the blubber of 4 adult male* T. truncatus.* Nearly 90% of the
detected compounds are not routinely monitored in the environment.
DDT-related and mirex/dechlorane-related compounds were the most abundant
classes of anthropogenic origin. Methoxy-brominated diphenyl ethers
(MeO-BDEs) and chlorinated methyl- and dimethyl bipyrroles (MBPs and DMBPs)
were the most abundant natural products. Reported for the first time in
southwestern Atlantic cetaceans and in contrast to North American marine
mammals, chlorinated MBPs and DMBPs were more abundant than their
brominated and/or mixed halogenated counterparts. HOC profiles in coastal *T.
truncatus* from Brazil and California revealed a distinct difference, with
a higher abundance of MeO-BDEs, mirex/dechloranes and chlorinated
bipyrroles in the Brazilian dolphins. Thirty-six percent of the detected
HOCs had an unknown structure. These results suggest broad geographical
differences in the patterns of bioaccumulative chemicals found in the
marine environment and indicate the need to develop more complete catalogs
of HOCs from various marine environments.



The full text and pdf are available from:

*http://pubs.acs.org/doi/abs/10.1021/acs.est.6b04186
<http://pubs.acs.org/doi/abs/10.1021/acs.est.6b04186>*


The Supporting Information (Mass Spectral Library) is available free of
charge:


*http://pubs.acs.org/doi/suppl/10.1021/acs.est.6b04186/suppl_file/es6b04186_si_002.pdf
<http://pubs.acs.org/doi/suppl/10.1021/acs.est.6b04186/suppl_file/es6b04186_si_002.pdf>*


For any questions or pdf requests please email:

Mariana Alonso: alonso.mb at gmail.com <skj3 at st-andrews.ac.uk>



Best regards,


*Mariana Batha Alonso, PhD*
Biophysics Institute
Federal University of Rio de Janeiro (UFRJ), RJ, Brazil

Aquatic Mammal and Bioindicator Laboratory
Rio de Janeiro State University (UERJ), RJ, Brazil
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