Adsorption and desorption behavior of herbicide diuron on various Chinese cultivated soils

Liu, Yi‐Hua; Xu, Zhenzhen; Wu, Xiaohu; Gui, Wenjun; Zhu, Guonian

doi:10.1016/j.jhazmat.2010.01.105

Cited by 141 publications

(117 citation statements)

References 25 publications

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“…The adsorption of pesticides to the soil is the key process that affects their ecotoxicological impact, environmental mobility and their rate of degradation. The desorption process of the pesticide determines rate of release and potential mobility of the pesticide in soil (Rama Krishna and Philip, 2008;Liu et al, 2010). Pesticide sorption or binding in the soil has been characterized by determining partitioning of the pesticide between soil and solution, resulting in pesticide sorption coefficients (Kd) (Wauchope et al, 2002;Berglof et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Adsorption-desorption behavior of thiram: effect of soil type, temperature and pH

Maznah

Muhamad

Sahid

2016

Chilean J. Agric. Res.

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The present study was conducted in order to investigate the adsorption and desorption behavior of tetramethylthiuram disulfide (thiram) using the batch equilibration technique in two soil namely: Ultisols and Inceptisols. The adsorptiondesorption isotherms were expressed by the Freundlich equation. The adsorption isotherms of thiram was classified as L-type under Gile's classification. The Freundlich's adsorption coefficient (Kd) value for thiram in the Ultisols and Inceptisols soil were 3.78 and 2.10 mL g -1 , respectively. Results indicated that soil organic matter was the main factor affecting thiram behavior in the studied soils. The calculated total percentage desorption values from the Ultisols and Inceptisols soil after the fourth desorption process were 39.2% and 51.6%, respectively. The negative Gibb's free energy change (∆G°) values obtained suggest that thiram adsorption is an exothermic process. The effects of temperature (25, 30, and 35 °C) and soil pH (3, 7, 10) were also studied on adsorption of thiram in the test soils. Results showed that adsorption of thiram was not affected by temperature but clearly affected by soil pH.Key words: Thiram, adsorption, desorption, soil, temperature, pH. ABSTRACTAdsorption-desorption behavior of thiram: effect of soil type, temperature and pH

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Section: Introductionmentioning

confidence: 99%

Adsorption-desorption behavior of thiram: effect of soil type, temperature and pH

Maznah

Muhamad

Sahid

2016

Chilean J. Agric. Res.

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“…Andrade et al (2010) verified higher ametryn mobility in soils with low organic matter content. According to Liu et al (2010), in soils with low content of organic matter and clay, herbicide percolation may occur with higher intensity, facilitating its availability in soil solution, making it likely to be taken to the water table. Silva et al (2012) verified that the increase in soil pH may decrease the sorption capacity of ametryn, and result in higher leaching of this molecule in soil profile, because when soil pH is close or under the herbicide pKa, this may protone and receive positive charge and be absorbed by the plant as cation.…”

Section: (A) (B) (C)mentioning

confidence: 99%

Ametryn Leaching in Soils from the Sugarcane Region in Northeastern Brazilian

et al. 2016

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-Ametryn is one of the most widely used herbicides in the sugarcane culture. Little is known about the interactions between this herbicide and the attributes of soils in the sugarcane region of northeastern Brazil. This knowledge, before recommending herbicide, will minimize the negative effects on the environment, particularly on water resources, and will ensure weed control efficacy. In this work, ametryn leaching potential was estimated through bioassays and chromatography, in five soils from the sugarcane region in northeastern Brazil: Quartzarenic Neosol (Entisol); Red Argisol (Ultisol); Ferrihumiluvic Spodosol (Spodosols); Red-Yellow Acrisol (Oxisol) and Haplic Cambisol (Inceptisols). To achieve this, columns were prepared with samples of the respective soils. On top of these columns ametryn was applied and, 12 hours later, a 60 mm rainfall was simulated. After water draining (72 hours after herbicide application), the columns were longitudinally opened to withdraw samples of each soil, every 5 cm. On some of these samples, ametryn quantification was performed by high-performance liquid chromatography and, on the others, biological assays were performed to confirm the results. Ametryn mobility was influenced by the physical-chemical characteristics of soils, mainly by organic matter content, texture and cation exchange capacity (CEC). However, this cannot be considered for Ferrihumiluvic Spodosol, whose cementing characteristics restrict the infiltration of water and organic compounds. Increased leaching ametryn occurred in Quartzarenic Neosol (Entisol), with higher herbicide concentration in the 5 to 10 cm depth layer, in relation to the 0 to 5 cm surface layer, indicating possible agronomic efficiency loss and higher risk of groundwater contamination.Keywords: herbicide, liquid chromatography, bioassay, mobility. RESUMO -O ametryn é um dos herbicidas mais utilizados na cultura da cana-de-açúcar, e pouco se conhece sobre as interações desse herbicida com os atributos dos solos da região canavieira do Nordeste brasileiro. Esse conhecimento antes da recomendação do herbicida permite minimizar os efeitos negativos ao ambiente -em especial, aos recursos hídricos -e garantir a eficiência no

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“…Previous studies suggested that adsorption of herbicide to the soil is the key process that affects their ecotoxicological impact, environmental mobility and the rate of degradation (Singh et al, 2004;Liu et al, 2010;Singh and Cameotra, 2013;). The desorption process of herbicides is also important since it determines the release rate and the potential mobility of herbicides in the soil (Liu et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The desorption process of herbicides is also important since it determines the release rate and the potential mobility of herbicides in the soil (Liu et al, 2010). The adsorptiondesorption process of pesticides is influenced by several factors like organic matter content, clay type, and content, soil texture, pH, temperature, etc.…”

Section: Introductionmentioning

confidence: 99%

“…The adsorptiondesorption process of pesticides is influenced by several factors like organic matter content, clay type, and content, soil texture, pH, temperature, etc. (Singh et al, 2004;Flores et al, 2009;Liu et al, 2010;Wu et al, 2011). The risk of a pesticide entering the surface and ground waters mainly comes from the adsorbed pesticide present in the soil.…”

Section: Introductionmentioning

confidence: 99%

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Spinosad Adsorption on Humic and Clay Constituents of Lacustrine Egyptian Soils and Its Leaching Potential

2016

Alexandria Science Exchange Journal: An International Quarterly

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Adsorption and desorption behavior of herbicide diuron on various Chinese cultivated soils

Cited by 141 publications

References 25 publications

Adsorption-desorption behavior of thiram: effect of soil type, temperature and pH

Adsorption-desorption behavior of thiram: effect of soil type, temperature and pH

Ametryn Leaching in Soils from the Sugarcane Region in Northeastern Brazilian

Spinosad Adsorption on Humic and Clay Constituents of Lacustrine Egyptian Soils and Its Leaching Potential

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