Water quality of the main tributaries of the Paraná Basin: glyphosate and AMPA in surface water and bottom sediments

The Paraná River, the sixth largest in the world, is the receptor of pollution loads from tributaries traversing urban and industrialized areas plus agricultural expanses, particularly so in the river’s middle and lower reaches along the Argentine sector. In the present study, we analyzed and discus...

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Bibliographic Details
Published in:Environmental monitoring and assessment 2016-08, Vol.188 (8), p.458, Article 458
Main Authors: Ronco, A. E., Marino, D. J. G., Abelando, M., Almada, P., Apartin, C. D.
Format: Article
Language:English
Subjects:
Acids
Agricultural chemicals
Agriculture
Analysis
Analytical chemistry
Argentina
Atmospheric Protection/Air Quality Control/Air Pollution
Bottom sediments
Earth and Environmental Science
Ecology
Ecotoxicology
Environment
Environmental Management
Environmental Monitoring
Geologic Sediments - analysis
Glycine - analogs & derivatives
Glycine - analysis
Glyphosate
Grain size
Herbicides
Herbicides - analysis
Industrial areas
Isoxazoles
Laboratories
Metabolites
Monitoring/Environmental Analysis
Nitrates
Organophosphonates - analysis
Pollution load
River basins
Rivers
Sediments
Soybeans
Studies
Surface water
Tetrazoles
Tributaries
Water analysis
Water Pollutants, Chemical - analysis
Water pollution
Water Quality
Water sampling
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Summary:The Paraná River, the sixth largest in the world, is the receptor of pollution loads from tributaries traversing urban and industrialized areas plus agricultural expanses, particularly so in the river’s middle and lower reaches along the Argentine sector. In the present study, we analyzed and discussed the main water quality parameters, sediment compositions, and content of the herbicide glyphosate plus its metabolite aminomethylphosphonic acid (AMPA) in water and sediments. Samples were obtained from distal positions in the principal tributaries of the Paraná and the main watercourse during surveys conducted in 2011 and 2012 to monitor the basin. Only 15 % of the water samples contained detectable concentrations of glyphosate at an average concentration of 0.60 μg/L, while no detectable levels of AMPA were observed. The herbicide and metabolite were primarily present in sediments of the middle and lower stretch’s tributaries, there occurring at a respective average of 37 and 17 % in samples. The mean detectable concentrations measured were 742 and 521 μg/kg at mean, maximum, and minimum glyphosate/AMPA ratios of 2.76, 7.80, and 0.06, respectively. The detection of both compounds was correlated with the presence of sulfides and copper in the sediment matrix.
ISSN:0167-6369
1573-2959
DOI:10.1007/s10661-016-5467-0