Levels of glyphosate in surface waters, sediments and soils associated with direct sowing soybean cultivation in north pampasic region of Argentina

• Published in: Environmental pollution (1987) Vol. 156; no. 1; pp. 61 - 66
• Main Authors: Peruzzo, Pablo J., Porta, Atilio A., Ronco, Alicia E.
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.11.2008
• Subjects: agricultural runoff; Agriculture; application rate; crop management; Crops, Agricultural; direct seeding; Distribution of contaminants; Environmental Monitoring - methods; Geologic Sediments - analysis; Glycine - analogs & derivatives; Glycine - analysis; Glycine max; Glyphosate; herbicide residues; herbicide resistance; Herbicides; Herbicides - analysis; mathematical models; Models, Biological; Multimedia model; Pesticide Residues - analysis; Rain; sediment contamination; simulation models; soil analysis; Soil Pollutants - analysis; soil pollution; soybeans; surface water; Transgenic crops; transgenic plants; Water Pollutants, Chemical - analysis; water pollution; Argentina; Pampas region; Argentina, Buenos Aires; Herbicides; Distribution of contaminants; Multimedia model; Glyphosate; Transgenic crops
• ISSN: 0269-7491; 1873-6424
• DOI: 10.1016/j.envpol.2008.01.015

Levels of glyphosate were determined in water, soil and sediment samples from a transgenic soybean cultivation area located near to tributaries streams of the Pergamino–Arrecifes system in the north of the Province of Buenos Aires, Argentina. Field work took into account both the pesticide application and the rains occurring after applications. The pesticide was analysed by HPLC-UV detection, previous derivatization with 9-fluorenylmethylchloroformate (FMOC-Cl). In addition, SoilFug multimedia model was used to analyse the environmental distribution of the pesticides. In the field, levels of glyphosate in waters ranged from 0.10 to 0.70 mg/L, while in sediments and soils values were between 0.5 and 5.0 mg/Kg. Temporal variation of glyphosate levels depended directly on the time of application and the rain events. The results obtained from the application of the model are in accordance with the values found in the field. Glyphosate concentrations in the environment from a region where little information exists about this and intensive cultivation activities predominate in large areas.