Decay characteristics and erosion-related transport of glyphosate in Chinese loess soil under field conditions

Yang, Xiaomei; Wang, Fei; Bento, Célia P.M.; Ling, Meng; Dam, Ruud van; Mol, Hans; Liu, Guobin; Ritsema, C.J.; Geissen, Violette

doi:10.1016/j.scitotenv.2015.05.082

Cited by 55 publications

(72 citation statements)

References 64 publications

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“…Glyphosate concentrations in sediment samples, as already reported in a previous study (see Oliveira et al, 2019), were found in site 1 (11,7 µg Kg -1 ) and the concentrations in site 2 were below of the quantification limit (>LOQ). Concentrations of glyphosate have been reported in aquatic environments worldwide such as Argentina (Berman et al, 2018), United States (Tush et al, 2018), Germany (Skeff et al, 2018) and China (Yang et al, 2015). In Brazil, there is not a legislation that determines the maximum limit of glyphosate in sediments and in tissues of aquatic organisms.…”

Section: Resultsmentioning

confidence: 99%

Biochemical and genotoxicity assessment of a polluted urban river using the native fish Astyanax altiparanae Garutti & Britski (Teleostei, Characidae)

Calado¹,

Andrade²,

Garrido³

et al. 2020

Ecotoxicol. Environ. Contam.

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Agriculture residues and domestic effluents are contaminants that reach aquatic ecosystems leading to toxic effects to environment and human health. These contaminants impacting mainly developing countries, due to precarious treatment of effluents and lack of legislation in the use of pesticides. Perequê River (South of Brazil) is impacted by pesticides (mainly glyphosate) and domestic effluents. The aims of this study were to analyze the concentration of glyphosate in water and sediments of Perequê River; and to evaluate the sublethal effects of the river contamination in Astyanax altiparanae using biomarkers. A sampling of water, sediment and fish were carried out in Perequê River (November/2016). The samples were collected in two sites, site 1 (S1) that is located on agriculture area and water catchment point; and site 2 (S2) located on the area with a domestic effluents influence. Water and sediment samples were used to glyphosate quantification. Fish were collected and tissues (brain, muscle, liver) were used to biochemical and genetic biomarkers. Glyphosate were quantified in S1, which is impacted by agriculture. Alterations in the liver biomarkers were not observed between the sites. However, the decrease in the AChE activity was observed in the S2, showing that the mixture of contaminants (urban and agriculture contaminants) can lead to anticholinesterasic effects. The sublethal effects observed can be a threat of environmental and human health.

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Section: Resultsmentioning

confidence: 99%

Biochemical and genotoxicity assessment of a polluted urban river using the native fish Astyanax altiparanae Garutti & Britski (Teleostei, Characidae)

Calado¹,

Andrade²,

Garrido³

et al. 2020

Ecotoxicol. Environ. Contam.

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“…Because microbial degradation of GPS in solution is generally considered a rapid process (Simonsen et al, 2008; Al‐Rajab and Schiavon, 2010; Yang et al, 2015), the perceived kinetics of GPS adsorption by soils may be attributed to biotic mineralization in the solution phase, i.e., reductions in solution‐phase GPS may be due to degradation rather than additional sorption. However, UPLC‐MS/MS analyses indicated that approximately 92 and 80% of the measured radioactivity in the supernatant solutions at 72 h can be attributed to GPS for the Sharkey and Commerce soils, respectively.…”

Section: Resultsmentioning

confidence: 99%

Time‐Dependent Sorption and Desorption of Glyphosate in Soils: Multi‐reaction Modeling

Padilla

Selim

2019

Vadose Zone Journal

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Core Ideas Batch data were successfully described by a multi‐reaction model. A single set of parameters can be applied to a range of concentrations. Glyphosate was strongly retained and readily degraded in both soils. The herbicide glyphosate [N‐(phosphonomethyl) glycine] (GPS) is commonly found offsite of application areas, despite traditional presumptions of the compound's immobility in the environment. This suggests that further efforts to predict the behavior and fate of GPS in soils are needed. In this study, kinetic batch experiments were conducted to assess the time‐dependent sorption and desorption of GPS by two agricultural soils from southern Louisiana: Commerce silt loam (a fine‐silty, mixed, superactive, nonacid, thermic Fluvaquentic Endoaquept) and Sharkey clay (a very‐fine, smectitic, thermic Chromic Epiaquert). Results of batch experiments indicate a high affinity of both soils for GPS, with 24‐h Freundlich coefficients of 158 and 396 Ln mg1−n kg−1 for the Commerce and Sharkey soils, respectively. An apparent time dependency of GPS sorption by both soils was observed, especially within the first 72 h. Changes in solution concentrations of the herbicide beyond 72 h are attributed to both additional sorption as well as solution‐phase degradation. A two‐site multi‐reaction model incorporating time‐dependent reversible and irreversible reactions successfully described the measured data from the batch experiments. However, values of the rate coefficients and sorbed concentrations may be overestimated due to the model's inability to account for degradation processes. Analysis of extracted soil‐bound residues illustrates that degradation of sorbed phase GPS is significant in both soils, although it occurs to a greater extent in the Sharkey soil. Degradation of the herbicide probably occurs through the aminomethylphosphonic acid pathway, as 14C remained associated with the phosphonomethyl group. Models that account for both time‐dependent reactions and degradation will probably lead to improved predictions of the fate of GPS in soils.

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“…This distribution profile is consistent with those reported by a number of other studies. While conducting a mobility study through undisturbed soil columns, Okada et al [47] recovered 68% of applied GPS in the top third of a 15 cm column, where Yang et al [50] recovered the majority of GPS and AMPA residues from the upper 2 cm of soil in a field plot study. Landry et al [15] reported that although no residual GPS was extracted after a yearlong field study involving agricultural soils in France, residual AMPA was concentrated in the top half of 20 cm profiles.…”

Section: Distribution In the Soil Columnmentioning

confidence: 99%

Glyphosate Transport in Two Louisiana Agricultural Soils: Miscible Displacement Studies and Numerical Modeling

Padilla

Selim

2018

Soil Systems

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Glyphosate (N-(phosphonomethyl) glycine) (GPS) is currently the most commonly used herbicide worldwide, and is generally considered as immobile in soils. However, numerous reports of the environmental occurrence of the herbicide coupled with recent evidence of human toxicity necessitate further investigation as to the behavior of GPS in the soil environment. Batch sorption studies along with miscible displacement experiments were carried out in order to assess the mobility of GPS in two Louisiana agricultural soils; Commerce silt loam and Sharkey clay. Batch results indicated a high affinity of both soils for solvated GPS, with greater affinity observed by the Sharkey soil. GPS sorption in the Commerce soil was most likely facilitated by the presence of amorphous Fe and Al oxides, whereas the high cation exchange capacity of the Sharkey soil likely allows for GPS complexation with surface exchangeable poly-valent cations. Miscible displacement studies indicate that GPS mobility is highly limited in both soils, with 3% and 2% of the applied herbicide mass recovered in the effluent solution from the Commerce and Sharkey soils, respectively. A two-site multi-reaction transport model (MRTM) adequately described GPS breakthrough from both soils and outperformed linear modeling efforts using CXTFIT. Analysis of extracted herbicide residues suggests that the primary metabolite of GPS, aminomethylphosphonic acid (AMPA), is more mobile in both soils, although both compounds are strongly retained.

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Decay characteristics and erosion-related transport of glyphosate in Chinese loess soil under field conditions

Cited by 55 publications

References 64 publications

Biochemical and genotoxicity assessment of a polluted urban river using the native fish Astyanax altiparanae Garutti & Britski (Teleostei, Characidae)

Biochemical and genotoxicity assessment of a polluted urban river using the native fish Astyanax altiparanae Garutti & Britski (Teleostei, Characidae)

Time‐Dependent Sorption and Desorption of Glyphosate in Soils: Multi‐reaction Modeling

Glyphosate Transport in Two Louisiana Agricultural Soils: Miscible Displacement Studies and Numerical Modeling

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