Influence of pH-dependent sorption and transformation on simulated pesticide leaching

Linden, A.M.A. van der; Tiktak, A.; Boesten, J.J.T.I.; Leijnse, A.

doi:10.1016/j.scitotenv.2009.01.059

Cited by 26 publications

(24 citation statements)

References 19 publications

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“…Dyson et al [11] and Shaner et al [12] found that the sorption of mesotrione was negatively correlated with pH. However, van der Linden [20] found that the mobility of mesotrione and its two metabolites (MNBA and AMBA) in soil, increased with increasing soil pH.…”

Section: Leaching Mesotrione Alone and In A Mixturementioning

confidence: 99%

Assessment of Mesotrione Leaching Applied Alone and Mixed in Seven Tropical Soils Columns under Laboratory Conditions

et al. 2017

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Herbicide leaching is influenced by soil physical and chemical properties as well as the prevailing climatic conditions. However, little is known about leaching of mixture of herbicides in the soil, especially in tropical regions like Brazil. The objective of this study is to evaluate the leaching of 14 C-mesotrione (cyclohexane-2-14 C-mesotrione) alone and in a mixture with S-metolachlor and terbuthylazine in seven tropical soil columns under laboratory conditions. These soils represented a wide range of properties with varying textures, cation exchange capacity (44 to 154 mmol c kg −1 ), pH (6.0 to 7.7), organic carbon content (0.58 to 27.32 g kg −1 ) and clay mineral contents (50 to 605 g kg −1 ), which are typical of tropical soils. Mesotrione residues were observed across all soil column layers (0-30 cm) in all evaluated soils by simulating 200 mm of water for 48 h. The application of mesotrione, alone or in a mixture, does not influence the leaching of this herbicide. Leaching of mesotrione ranged from low (up 15 cm) to very high (up 30 cm and leachate) in the tropical soils and may pose a potential groundwater contamination risk. In sand and loamy sand soil, the mesotrione was quantified in the leachate at all sampling times as above 80% of the amount initially applied. Thus, mesotrione application without the prior knowledge of the soil physical and chemical properties can result in inefficient weed control on field condition due to high leaching potentials.

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Section: Leaching Mesotrione Alone and In A Mixturementioning

confidence: 99%

Assessment of Mesotrione Leaching Applied Alone and Mixed in Seven Tropical Soils Columns under Laboratory Conditions

et al. 2017

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“…0.1 mg L -1 , this may make threats to the quality of drinking groundwater sources for leaching of soil bound pesticide residues from agricultural lands (Papadopoulou-Mourkidou et al 2004). Major parameters related to pesticides leaching are: soil properties, physicochemical characteristics of pesticides, environmental climate and farm management (Nicholls 1988;Van der Werf 1996;Carter 2000, Van der Linden et al 2009). However, limited data is available on studies of impact of variable farm practices on probable leaching of pesticides.…”

Section: Effects On Surface and Ground Water Quality In Agricultural mentioning

confidence: 99%

Herbicides and Pesticides as Potential Pollutants: A Global Problem

Rashid¹,

Husnain²,

Riazuddin³

2010

Plant Adaptation and Phytoremediation

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Herbicides and pesticides have been used to control, eliminate or destroy pests in order to protect human being's food. This technology could be economical and effective if the selection of herbicides and pesticides is based on its mode of action, chemical nature, method and time of application and nature of crop. They have been extensively studied for their toxic potential to biological systems. Herbicides and pesticides are gradually more water soluble, polar and heat stable, therefore it is difficult to reduce their lethalness and to fade away them from the atmosphere. They are highly selective, and found to be toxic to a number of people in industry, agriculture and public health work places. They have harmful effects directly or indirectly on soil, environment, surface and ground water natural flora and fauna, aquatic life which will ultimately adversely influence the human beings and livestock. So, likely impact of herbicides and pesticides on atmosphere and community health is of great significance regardless of their noticeable benefits. It is likely to reduce the selection of pest resistance by preventing the contact between pesticide which act in a particular way and the pest population and to subsequently apply pesticides from diverse classes of compounds having dissimilar modes of accomplishment. Integrated Pest Management (IPM) is intended to protect the maximum likely risks to agriculture as well as environment by using cost-effective measures and pest management will prolong for improvements with the advent of new and improved technologies. B. Rashid (B)Centre for Applied Molecular Biology, 87 W Canal Bank Road, Thokar Niaz Baig,

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“…[13][14][15] The degradation of these contaminants is mainly governed by various biotic and abiotic parameters such as microbial population, pH, temperature and solar light. [16][17][18] In the latter case, the process can occur through direct excitation where the pollutant absorbs the solar light and undergoes degradation via the generation of various reactive excited states. [19,20] It can also undergo induced transformations where highly reactive species such as hydroxyl radicals and singlet oxygen are involved.…”

Section: Introductionmentioning

confidence: 99%

Use of quadrupole time of flight mass spectrometry for the characterization of transformation products of the antibiotic sulfamethazine upon photocatalysis with Pd‐doped ceria‐ZnO nanocomposite

et al. 2015

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The photocatalytic degradation of the antibiotic sulfamethazine under excitation at 365 nm of Pd-doped ceria-ZnO nanocomposite, titanium dioxide and iron(III) aqua complex was deeply studied from the analytical point of view. It reveals the formation of nine degradation products that were detected in their protonated forms using LC/electrospray ionization quadrupole time-of-flight MS in the positive mode. Their formation involves the hydroxyl radical, and their concentrations increased with irradiation time. Collision-induced dissociation tandem mass spectrometry associated with the accurate mass measurements was efficiently used for the elucidation of their chemical structures. None of these identified degradation products has been already reported in the literature. Three by-products result from the hydroxylation at the pyrimidine moiety as well as at the aromatic part, two of them arise from the scission of the pyrimidine group, and finally, three of them come from the scission of the sulfamide bridge. This points the evidence of studying the fate of these degradation products if their toxicity is demonstrated because they are clearly the result of the reaction of hydroxyl radical with the antibiotic sulfamethazine.

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Influence of pH-dependent sorption and transformation on simulated pesticide leaching

Cited by 26 publications

References 19 publications

Assessment of Mesotrione Leaching Applied Alone and Mixed in Seven Tropical Soils Columns under Laboratory Conditions

Assessment of Mesotrione Leaching Applied Alone and Mixed in Seven Tropical Soils Columns under Laboratory Conditions

Herbicides and Pesticides as Potential Pollutants: A Global Problem

Use of quadrupole time of flight mass spectrometry for the characterization of transformation products of the antibiotic sulfamethazine upon photocatalysis with Pd‐doped ceria‐ZnO nanocomposite

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