Distribution of chlorinated pesticides and individual polychlorinated biphenyls in biotic and abiotic compartments of the Rio de la Plata, Argentina

1990 ◽  
Vol 24 (4) ◽  
pp. 498-505 ◽  
Author(s):  
Juan C. Colombo ◽  
Michel F. Khalil ◽  
Michel Arnac ◽  
Alcide C. Horth ◽  
Jose A. Catoggio
Keyword(s):  
Polychlorinated Biphenyls ◽  
Rio De La Plata ◽  
Chlorinated Pesticides ◽  
Río De La Plata ◽  
La Plata

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.

Long-Term (1970–2017) Temporal Trends of Polychlorinated Biphenyls in Fish, Settling Material, and Sediments from Populated and Remote Sites in Río de la Plata Estuary, Argentina

2018 ◽  
Vol 52 (21) ◽  
pp. 12412-12418 ◽  
Author(s):  
Juan Carlos Colombo ◽  
Eric Demian Speranza ◽  
Malena Astoviza ◽  
María Carolina Migoya ◽  
Carlos Norberto Skorupka ◽  
...  
Keyword(s):  
Polychlorinated Biphenyls ◽  
Temporal Trends ◽  
Rio De La Plata ◽  
Río De La Plata ◽  
La Plata ◽  
Remote Sites
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