Occurrence of glyphosate and AMPA in an agricultural watershed from the southeastern region of Argentina

Glyphosate (GLY) and AMPA concentrations were determined in sandy soil profiles, during pre- and post-application events in two agricultural soybean fields (S1 and S2). Streamwater and sediment samples were also analyzed. Post-application sampling was carried out one month later from the event. Conc...

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Publicado:	2015
Materias:	Agricultural watershed AMPA Glyphosate Soil profile Agriculture Alkalinity Groundwater Groundwater pollution Herbicides Organic carbon Pesticides Sediments Watersheds Agricultural watersheds Glyphosates Groundwater contamination Limited degradations Pesticide concentrations Physicochemical characteristics Soil profiles Soils 2 aminoethylphosphonic acid glyphosate organic carbon alpha amino 3 hydroxy 5 methyl 4 isoxazolepropionic acid glycine herbicide pesticide residue water pollutant agricultural land concentration (composition) groundwater pollution pesticide application pollutant transport sandy soil sediment soil profile streamwater watershed alkalinity Argentina Article controlled study pesticide spraying physical chemistry pollution transport priority journal soil acidity soil structure soil texture soybean surface soil water pollution agriculture analogs and derivatives analysis environmental monitoring half life time Glycine max alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid Environmental Monitoring Glycine Half-Life Pesticide Residues Water Pollutants, Chemical
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00489697_v536_n_p687_Lupi http://hdl.handle.net/20.500.12110/paper_00489697_v536_n_p687_Lupi
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	paper:paper_00489697_v536_n_p687_Lupi2023-06-08T15:05:43Z Occurrence of glyphosate and AMPA in an agricultural watershed from the southeastern region of Argentina Agricultural watershed AMPA Glyphosate Soil profile Agriculture Alkalinity Groundwater Groundwater pollution Herbicides Organic carbon Pesticides Sediments Watersheds Agricultural watersheds AMPA Glyphosates Groundwater contamination Limited degradations Pesticide concentrations Physicochemical characteristics Soil profiles Soils 2 aminoethylphosphonic acid glyphosate organic carbon alpha amino 3 hydroxy 5 methyl 4 isoxazolepropionic acid glycine glyphosate herbicide pesticide residue water pollutant agricultural land concentration (composition) glyphosate groundwater pollution pesticide application pollutant transport sandy soil sediment soil profile streamwater watershed agricultural land alkalinity Argentina Article controlled study pesticide spraying physical chemistry pollution transport priority journal sandy soil sediment soil acidity soil structure soil texture soybean surface soil water pollution watershed agriculture analogs and derivatives analysis environmental monitoring half life time water pollutant Argentina Glycine max Agriculture alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid Argentina Environmental Monitoring Glycine Half-Life Herbicides Pesticide Residues Water Pollutants, Chemical Glyphosate (GLY) and AMPA concentrations were determined in sandy soil profiles, during pre- and post-application events in two agricultural soybean fields (S1 and S2). Streamwater and sediment samples were also analyzed. Post-application sampling was carried out one month later from the event. Concentrations of GLY + AMPA in surface soils (0-5 cm depth) during pre-application period showed values 20-fold higher (0.093-0.163 μg/g d.w.) than control area (0.005 μg/g d.w.). After application event soils showed markedly higher pesticide concentrations. A predominance of AMPA (80%) was observed in S1 (early application), while 34% in S2 for surface soils. GLY + AMPA concentrations decreased with depth and correlated strongly with organic carbon (r between 0.74 and 0.88, p < 0.05) and pH (r between - 0.81 and - 0.76, p < 0.001). The slight enrichment of pesticides observed from 25 cm depth to deeper layer, in addition to the alkaline pH along the profile, is of high concern about groundwater contamination. Sediments from pre-application period showed relatively lower pesticide levels (0.0053-0.0263 μg/g d.w.) than surface soil with a predominance of glyphosate, indicating a limited degradation. Levels of contaminants (mainly AMPA) in streamwater (ND-0.5 ng/mL) denote the low persistence of these compounds. However, a direct relationship in AMPA concentration was observed between sediment and streamwater. Despite the known relatively short half-life of glyphosate in soils, GLY + AMPA occurrence is registered in almost all matrices at different sampling times (pre- and post-application events). The physicochemical characteristics (organic carbon, texture, pH) and structure of soils and sediment in addition to the time elapsed from application determined the behavior of these contaminants in the environment. As a whole, the results warn us about vertical transport trough soil profile with the possibility of reaching groundwater. © 2015 Elsevier B.V. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00489697_v536_n_p687_Lupi http://hdl.handle.net/20.500.12110/paper_00489697_v536_n_p687_Lupi
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Agricultural watershed AMPA Glyphosate Soil profile Agriculture Alkalinity Groundwater Groundwater pollution Herbicides Organic carbon Pesticides Sediments Watersheds Agricultural watersheds AMPA Glyphosates Groundwater contamination Limited degradations Pesticide concentrations Physicochemical characteristics Soil profiles Soils 2 aminoethylphosphonic acid glyphosate organic carbon alpha amino 3 hydroxy 5 methyl 4 isoxazolepropionic acid glycine glyphosate herbicide pesticide residue water pollutant agricultural land concentration (composition) glyphosate groundwater pollution pesticide application pollutant transport sandy soil sediment soil profile streamwater watershed agricultural land alkalinity Argentina Article controlled study pesticide spraying physical chemistry pollution transport priority journal sandy soil sediment soil acidity soil structure soil texture soybean surface soil water pollution watershed agriculture analogs and derivatives analysis environmental monitoring half life time water pollutant Argentina Glycine max Agriculture alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid Argentina Environmental Monitoring Glycine Half-Life Herbicides Pesticide Residues Water Pollutants, Chemical
spellingShingle	Agricultural watershed AMPA Glyphosate Soil profile Agriculture Alkalinity Groundwater Groundwater pollution Herbicides Organic carbon Pesticides Sediments Watersheds Agricultural watersheds AMPA Glyphosates Groundwater contamination Limited degradations Pesticide concentrations Physicochemical characteristics Soil profiles Soils 2 aminoethylphosphonic acid glyphosate organic carbon alpha amino 3 hydroxy 5 methyl 4 isoxazolepropionic acid glycine glyphosate herbicide pesticide residue water pollutant agricultural land concentration (composition) glyphosate groundwater pollution pesticide application pollutant transport sandy soil sediment soil profile streamwater watershed agricultural land alkalinity Argentina Article controlled study pesticide spraying physical chemistry pollution transport priority journal sandy soil sediment soil acidity soil structure soil texture soybean surface soil water pollution watershed agriculture analogs and derivatives analysis environmental monitoring half life time water pollutant Argentina Glycine max Agriculture alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid Argentina Environmental Monitoring Glycine Half-Life Herbicides Pesticide Residues Water Pollutants, Chemical Occurrence of glyphosate and AMPA in an agricultural watershed from the southeastern region of Argentina
topic_facet	Agricultural watershed AMPA Glyphosate Soil profile Agriculture Alkalinity Groundwater Groundwater pollution Herbicides Organic carbon Pesticides Sediments Watersheds Agricultural watersheds AMPA Glyphosates Groundwater contamination Limited degradations Pesticide concentrations Physicochemical characteristics Soil profiles Soils 2 aminoethylphosphonic acid glyphosate organic carbon alpha amino 3 hydroxy 5 methyl 4 isoxazolepropionic acid glycine glyphosate herbicide pesticide residue water pollutant agricultural land concentration (composition) glyphosate groundwater pollution pesticide application pollutant transport sandy soil sediment soil profile streamwater watershed agricultural land alkalinity Argentina Article controlled study pesticide spraying physical chemistry pollution transport priority journal sandy soil sediment soil acidity soil structure soil texture soybean surface soil water pollution watershed agriculture analogs and derivatives analysis environmental monitoring half life time water pollutant Argentina Glycine max Agriculture alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid Argentina Environmental Monitoring Glycine Half-Life Herbicides Pesticide Residues Water Pollutants, Chemical
description	Glyphosate (GLY) and AMPA concentrations were determined in sandy soil profiles, during pre- and post-application events in two agricultural soybean fields (S1 and S2). Streamwater and sediment samples were also analyzed. Post-application sampling was carried out one month later from the event. Concentrations of GLY + AMPA in surface soils (0-5 cm depth) during pre-application period showed values 20-fold higher (0.093-0.163 μg/g d.w.) than control area (0.005 μg/g d.w.). After application event soils showed markedly higher pesticide concentrations. A predominance of AMPA (80%) was observed in S1 (early application), while 34% in S2 for surface soils. GLY + AMPA concentrations decreased with depth and correlated strongly with organic carbon (r between 0.74 and 0.88, p < 0.05) and pH (r between - 0.81 and - 0.76, p < 0.001). The slight enrichment of pesticides observed from 25 cm depth to deeper layer, in addition to the alkaline pH along the profile, is of high concern about groundwater contamination. Sediments from pre-application period showed relatively lower pesticide levels (0.0053-0.0263 μg/g d.w.) than surface soil with a predominance of glyphosate, indicating a limited degradation. Levels of contaminants (mainly AMPA) in streamwater (ND-0.5 ng/mL) denote the low persistence of these compounds. However, a direct relationship in AMPA concentration was observed between sediment and streamwater. Despite the known relatively short half-life of glyphosate in soils, GLY + AMPA occurrence is registered in almost all matrices at different sampling times (pre- and post-application events). The physicochemical characteristics (organic carbon, texture, pH) and structure of soils and sediment in addition to the time elapsed from application determined the behavior of these contaminants in the environment. As a whole, the results warn us about vertical transport trough soil profile with the possibility of reaching groundwater. © 2015 Elsevier B.V.
title	Occurrence of glyphosate and AMPA in an agricultural watershed from the southeastern region of Argentina
title_short	Occurrence of glyphosate and AMPA in an agricultural watershed from the southeastern region of Argentina
title_full	Occurrence of glyphosate and AMPA in an agricultural watershed from the southeastern region of Argentina
title_fullStr	Occurrence of glyphosate and AMPA in an agricultural watershed from the southeastern region of Argentina
title_full_unstemmed	Occurrence of glyphosate and AMPA in an agricultural watershed from the southeastern region of Argentina
title_sort	occurrence of glyphosate and ampa in an agricultural watershed from the southeastern region of argentina
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00489697_v536_n_p687_Lupi http://hdl.handle.net/20.500.12110/paper_00489697_v536_n_p687_Lupi
_version_	1768546012888039424

Occurrence of glyphosate and AMPA in an agricultural watershed from the southeastern region of Argentina

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