Effect of organic matter and iron oxides on quaternary herbicide sorption–desorption in vineyard-devoted soils

Pateiro, Mirian; Pérez-Novo, C.; Arias‐Estévez, Manuel; Rial-Otero, R.; Simal‐Gándara, Jesús

doi:10.1016/j.jcis.2009.02.019

Cited by 60 publications

(38 citation statements)

References 36 publications

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“…Many researchers indicate adsorption as a fundamental process responsible for pesticide migration in soils, but there seems to be some controversy regarding the mechanisms by which these substances are bound (Chefetz et al 2004;Pateiro-Moure et al 2009;Rani and Juwarkar 2010;Álvarez et al 2013;Liu et al 2013). Since the AMBA half-life was not influenced by the OC content in soil and sediments, it may be concluded that the complex between this compound and inorganic fraction of sorbents was created.…”

Section: Influence Of Soil and Sediment Ph On Triketones Stabilitymentioning

confidence: 99%

Degradation study of mesotrione and other triketone herbicides on soils and sediments

et al. 2015

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Purpose Triketone compounds are considered to be less stable in the ecosystems in comparison with other herbicides. However, their degradation processes in environment are under investigation as both parents and degradation products can exhibit toxicity on non-target organisms. The objective of this research was to investigate the degradation of triketone herbicides: mesotrione, sulcotrione, and tembotrione, as well as their degradation products in soils and sediments. Materials and methods The degradation studies were conducted in soil and sediment samples with different physicochemical properties. All experiments were conducted under standard experimental conditions; therefore, it was possible to assess the influence of pH, organic carbon (OC) content of soils and sediments, and the sunlight on the stability of triketones and their degradation products. The conditions of extraction and chromatographic determination were optimized for the determination of triketones and their degradation products in laboratory-spiked sediment and soil samples. Results and discussion The triketone degradation products exhibited higher stability in soil and sediment samples in comparison with parent herbicides. Soil microorganisms accelerated the degradation of all investigated compounds. In alkaline soil and sediments, all analytes exhibited higher stability in comparison with the acidic sorbents. The influence of OC content in sorbents was not evident. Photodegradation was the main path of triketones decomposition in soils and sediments. Conclusions Since the stability of triketone herbicides may be significant, depending on the environmental conditions, the monitoring of the concentration of these compounds and in particular their degradation products should be conducted under the field conditions.

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Section: Influence Of Soil and Sediment Ph On Triketones Stabilitymentioning

confidence: 99%

Degradation study of mesotrione and other triketone herbicides on soils and sediments

et al. 2015

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“…Kah and Brown (2007) reported that adsorption of pesticides, especially which had ionic property, was dependent of sediment pH. Pateiro-Moure et al (2009) reported that pesticides adsorption was related with organic matter and ferric oxide. It is said that adsorption ability is not dependent of only humus in the both reports.…”

Section: Akahoyamentioning

confidence: 99%

Adsorption Properties of Sediments for Pesticides: Investigation with Supercritical Fluid Extraction and Gas Chromatograph Mass Spectrometry

Chikushi¹,

Yoshida²,

Toda³

2011

Pesticides - Formulations, Effects, Fate

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“…Although, in some cases, this toxic weed killer is inactivated by irreversible adsorption on clays, which are the main components of the mineral fraction of soils, it has been detected in waters. Watercourse contamination may result from a vertical transport through the soil profile promoted by the dissolved colloids such as dissolved organic matter and dispersed colloidal clay [7] . Fernández et al analyzed water samples from irrigation channels, rivers and lagoons taken from three different marsh areas of the Valencian community (Spain) and a paraquat concentration of 3.95 µg/L was detected [8] .…”

Section: Introductionmentioning

confidence: 99%

Different Approaches for Paraquat Quantification in Waters

Santos

Madeira

Alves

2014

Journal of Liquid Chromatography & Related Technologies

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Three analytical methodologies for paraquat (PQ) identification and quantification in waters were developed and validated in response to different scenarios: a direct injection-liquid chromatography-diode array detector (DI-LC-DAD) method for emergency situations, as occurs when there is a suspicion of contamination of drinking water networks; a solid phase extraction-liquid chromatography-diode array detector (SPE-LC-DAD) method to control the drinking water quality and a direct injection-liquid chromatography-mass spectrometry (DI-LC-MS) method for confirmation purposes and , 38(4), 472-484, 2015 http://dx.doi.org/10.1080/10826076.2014.913526 was assessed when Gramoxone was used as PQ source instead of the analytical standard.1 This article was published in Journal of Liquid Chromatography and Related TechnologiesGlobal uncertainties below 6, 11 and 13% were found for DI-LC-MS, SPE-LC-DAD and DI-LC-DAD, respectively, for the most part of the calibration ranges. All methods proved to be precise, accurate and suitable for the purpose that they were designed.

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Effect of organic matter and iron oxides on quaternary herbicide sorption–desorption in vineyard-devoted soils

Cited by 60 publications

References 36 publications

Degradation study of mesotrione and other triketone herbicides on soils and sediments

Degradation study of mesotrione and other triketone herbicides on soils and sediments

Adsorption Properties of Sediments for Pesticides: Investigation with Supercritical Fluid Extraction and Gas Chromatograph Mass Spectrometry

Different Approaches for Paraquat Quantification in Waters

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