Mobility of atrazine in soils of a wastewater irrigated maize field

Salazar-Ledesma, M.; Prado, Blanca; Zamora, Olivia; Siebe, Christina

doi:10.1016/j.agee.2017.12.018

Cited by 54 publications

(20 citation statements)

References 44 publications

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“…Agrochemicals can reach the soil due to direct applications, such as for weed control and following seed treatment, as well as indirectly by spraying of the aerial parts of plants, the falling of treated foliage or fruits, and the movement of contaminated water on the surface and within the soil profile (Chaplain et al, 2011;Chowdhury et al, 2008;Cycon et al, 2017;Gevao et al, 2000). Once accumulated in the soil, these chemicals can be transported by leaching and surface runoff and they can undergo chemical processes such as hydrolysis, photolysis, and chemical degradation, as well as they can interact with the living fraction of the soil (the microbiota) and be biodegraded (Arias-Estévez et al, 2008;Chaplain et al, 2011;Kookana et al, 1998;Meite et al, 2018;Salazar-Ledesma et al, 2018;Shaheen et al, 2017). As a result of these processes, pesticides and/or their metabolites (which may be more or less toxic than the parent compounds) can reach hydric resources (surface and subterranean waters), become bioaccumulated through the food chain, be completely mineralized, or persist for long periods in the soil (Chaplain et al, 2011;Gevao et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Use of botanical insecticides for sustainable agriculture: Future perspectives

Campos

Proença

Oliveira

et al. 2019

Ecological Indicators

283

144

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Recent decades have witnessed major growth in the use of agrochemicals worldwide,for maximizing the food production for a rapidly growing human population. However, the indiscriminate use of these substances especially the pesticides has led to the accumulation of toxic residues in food, soil, air, and water, as well as the development of resistance in pests. Moreover, pesticides affect soil enzymes, which are essential catalysts that govern soil quality. In order to meet the food security, it is necessary to produce more food, sustainably and safely, in a diminishing area of available arable land and with decreased water resources. Given this situation, there is an increased interest in the use of alternative substances to synthetic agrochemicals that present less risk to the environment and human health while increasing the food safety. Promising results have been obtained using compounds derived from aromatic plants for the control of agricultural pests. Such compounds of botanical origin can be highly effective, with multiple mechanisms of action, while at the same time having low toxicity towards nontarget organisms. However, the large-scale application of these substances for pest control is limited by their poor stability and other technological issues. In this backdrop, the present work discusses perspectives for the use of compounds of botanical origin, as well as strategies employing the encapsulation techniques that can contribute to the development of systems for use in sustainable agricultural practices.

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Section: Introductionmentioning

confidence: 99%

Use of botanical insecticides for sustainable agriculture: Future perspectives

Campos

Proença

Oliveira

et al. 2019

Ecological Indicators

283

144

View full text Add to dashboard Cite

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“…"Other" includes more sporadic contaminants (< 1%), such as explosive products, major ions (e.g., Ca, Mg, K, Na), and perchlorates Table 2 The experimental conditions (toxicant concentration, plant detrimental toxicant concentration, exposition time, growth media, plant endpoint analyzed, test plant species) that are generally ever-increasing periodical release (van Der Brink and Ter Baak 1999). When pesticides reach the aquatic ecosystem, their toxic potential can vary depending on their solubility and persistence in water, as well as their potential to be absorbed by aquatic plants (Neto et al 2017;Salazar-Ledesma et al 2018;Ribeiro et al 2019).…”

Section: Pesticidesmentioning

confidence: 99%

Aquatic plants and ecotoxicological assessment in freshwater ecosystems: a review

Ceschin

Bellini

Scalici

2020

Environ Sci Pollut Res

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This paper reviews the current state-of-the-art, limitations, critical issues, and new directions in freshwater plant ecotoxicology. We selected peer-reviewed studies using relevant databases and for each (1) publication year, (2) test plant species, (3) reference plant group (microalgae, macroalgae, bryophytes, pteridophytes, flowering plants), (4) toxicant tested (heavy metal, pharmaceutical product, hydrocarbon, pesticide, surfactant, plastic), (5) experiment site (laboratory, field), and (6) toxicant exposure duration. Although aquatic plant organisms play a key role in the functioning of freshwater ecosystems, mainly linked to their primary productivity, their use as biological models in ecotoxicological tests was limited if compared to animals. Also, toxicant effects on freshwater plants were scarcely investigated and limited to studies on microalgae (80%), or only to a certain number of recurrent species (Pseudokirchneriella subcapitata, Chlorella vulgaris, Lemna minor, Myriophyllum spicatum). The most widely tested toxicants on plants were heavy metals (74%), followed by pharmaceutical products and hydrocarbons (7%), while the most commonly utilized endpoints in tests were plant growth inhibition, variations in dry or fresh weight, morpho-structural alterations, chlorosis, and/or necrosis. The main critical issues emerged from plant-based ecotoxicological tests were the narrow range of species and endpoints considered, the lack of environmental relevance, the excessively short exposure times, and the culture media potentially reacting with toxicants. Proposals to overcome these issues are discussed.

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“…In order to clarify the adsorption mechanism of atrazine in soil, the adsorption status of atrazine at different temperatures (288, 298 and 308 K) was analyzed and the influence of temperature on the equilibrium adsorption coefficient was assessed based on the standard Gibbs free energy (∆ 0 ) formula (Equ. (8)). Furthermore, the relevant thermodynamic parameters of standard enthalpy (∆r 0 ), and standard entropy (∆ 0 ) were calculated using Equ.…”

Section: Thermodynamic Parameters Of Adsorptionmentioning

confidence: 99%

“…Long-term atrazine residue accumulation in the soil accounts for 20% to 70% of the applied dose during application and it is one of the most commonly detected pesticides in soils and groundwater worldwide [6][7][8]. However, atrazine is one of the triazine herbicides which has been banned by the European Union in 2004 (2004/248/EC) [9] and it was added to the list of priority substances (Directive 2013/39/EU) [10].…”

Section: Introductionmentioning

confidence: 99%

Equilibrium, kinetic and thermodynamic studies on the adsorption of atrazine in soils of the water fluctuation zone in the Three-Gorges Reservoir

Shu

Liu

et al. 2019

Preprint

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Background: Environmental behavior of pesticide in soils is a key current research focus. Studying the adsorption characteristics of pesticides in soils as a parameter for evaluating the risk of groundwater pollution by pesticides, is commonly applied in agriculture. Results: In order to provide a theoretical basis for environment risk assessment and pollution remediation, the thermodynamics and kinetics of the equilibrium of atrazine adsorption in the Three Gorges Reservoir area were assessed and analyzed via batch experiments. Results showed that the sorption of atrazine was exothermic and spontaneous process at the temperatures (298–318K), and the atrazine was more easily adsorbed by soils at a concentration of 0–30 mg L -1 , with low temperature adsorption effects better than high temperature adsorption. The adsorption of atrazine to the two assessed soils was well fitted by Freundlich and Langmuir models. The adsorption kinetics of atrazine on soils were consistent with the quasi-second order kinetic model and intraparticle diffusion was found not to be the only control step. Results showed that monolayer adsorption occurred with non-uniform energy distribution on the soil surface, indicating that the adsorption of atrazine on the two kinds of soil was controlled by internal diffusion surface adsorption and liquid film diffusion, leading to the complexity of its adsorption kinetics. The values of standard free energy <0, indicating that the adsorption of atrazine in the soils was spontaneous and dominated by physical adsorption. Changes in standard enthalpy ( ) indicated that the adsorption was exothermic. Conclusion: Atrazine exhibited a weak adsorption capacity in both soils, indicating it is highly mobile in the soil-water environment and could easily cause groundwater pollution. Therefore, much attention should be paid to the environmental behavior of pesticide soil moisture fluctuations, leading to broad spreading of pollution.

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Mobility of atrazine in soils of a wastewater irrigated maize field

Cited by 54 publications

References 44 publications

Use of botanical insecticides for sustainable agriculture: Future perspectives

Use of botanical insecticides for sustainable agriculture: Future perspectives

Aquatic plants and ecotoxicological assessment in freshwater ecosystems: a review

Equilibrium, kinetic and thermodynamic studies on the adsorption of atrazine in soils of the water fluctuation zone in the Three-Gorges Reservoir

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