Sources, Vertical Fluxes, and Accumulation of Aliphatic Hydrocarbons in Coastal Sediments of the Río de la Plata Estuary, Argentina

2005 ◽  
Vol 39 (21) ◽  
pp. 8227-8234 ◽  
Author(s):  
J. C. Colombo ◽  
N. Cappelletti ◽  
J. Lasci ◽  
M. C. Migoya ◽  
E. Speranza ◽  
...  
Keyword(s):  
Aliphatic Hydrocarbons ◽  
Coastal Sediments ◽  
Rio De La Plata ◽  
Río De La Plata ◽  
La Plata ◽  
Vertical Fluxes

Sources, Vertical Fluxes, and Equivalent Toxicity of Aromatic Hydrocarbons in Coastal Sediments of the Río de la Plata Estuary, Argentina

2006 ◽  
Vol 40 (3) ◽  
pp. 734-740 ◽  
Author(s):  
J. C. Colombo ◽  
N. Cappelletti ◽  
J. Lasci ◽  
M. C. Migoya ◽  
E. Speranza ◽  
...  
Keyword(s):  
Aromatic Hydrocarbons ◽  
Coastal Sediments ◽  
Rio De La Plata ◽  
Río De La Plata ◽  
La Plata ◽  
Vertical Fluxes

Vertical fluxes and accumulation of PCBs in coastal sediments of the Río de la Plata estuary, Argentina

Chemosphere ◽  
2005 ◽  
Vol 61 (9) ◽  
pp. 1345-1357 ◽  
Author(s):  
J.C. Colombo ◽  
N. Cappelletti ◽  
A. Barreda ◽  
M.C. Migoya ◽  
C.N. Skorupka
Keyword(s):  
Coastal Sediments ◽  
Rio De La Plata ◽  
Río De La Plata ◽  
La Plata ◽  
Vertical Fluxes

Detritivorous fish contamination in the Río de la Plata estuary: a critical accumulation pathway in the cycle of anthropogenic compounds

2000 ◽  
Vol 57 (6) ◽  
pp. 1139-1150 ◽  
Author(s):  
Juan C Colombo ◽  
Claudio Bilos ◽  
Mauricio Remes Lenicov ◽  
Dario Colautti ◽  
Patricia Landoni ◽  
...  
Keyword(s):  
Fossil Fuels ◽  
Aliphatic Hydrocarbons ◽  
Human Consumption ◽  
Rio De La Plata ◽  
Chlorinated Pesticides ◽  
Río De La Plata ◽  
Prochilodus Lineatus ◽  
La Plata ◽  
Consumption Rates ◽  
Contaminant Sources

Aliphatic hydrocarbons, chlorinated pesticides, polychlorinated biphenyls (PCBs), dioxins, furans, and trace metals have been quantified in fishes collected at four stations in Río de la Plata to determine contaminant sources, elucidate interstation and interspecies differences, and assess the health risks associated with fish consumption. Río de la Plata fish present low trace metal concentrations and moderate to high levels of organic pollutants, particularly aliphatic hydrocarbons and PCBs. The highest concentrations were recorded in Prochilodus lineatus, a dominant and remarkably specialized fatty detritivore that feeds on contaminated organic-rich flocculent matter. Lower levels were registered in Cyprinus carpio and especially in Mugil cephalus, reflecting different feeding preferences. A geographical pattern of higher contaminant concentrations close to the Buenos Aires urban center and lower levels in distant stations was also observed. The multivariate analysis of contaminant signatures indicated that most contaminated Prochilodus had fresh petrogenic and PCB traces, similar to fossil fuels and Aroclor 1254-1260, whereas Mugil and fish from distant sites presented a higher proportion of biogenic hydrocarbons and of more chlorinated PCBs. Toxicity equivalents ranged from 11 to 39 pg·g fresh weight-1 in Prochilodus, exceeding the guideline of 25 pg·g-1 for human consumption, with allowable consumption rates as low as 1 g fish·day-1.

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