Adsorption study of 14C-paraquat in two Malaysian agricultural soils

Muhamad, Halimah; Ismail, B. S.; Sameni, M.; Mat, Nashriyah

doi:10.1007/s10661-010-1565-6

Cited by 17 publications

(8 citation statements)

References 19 publications

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“…The equilibrium time was about 75 min. In previous reports, paraquat rapidly and strongly binds to the soil, and the equilibrium time for paraquat is 1–2 h in clay soil. , …”

Section: Resultsmentioning

confidence: 84%

“…In previous reports, paraquat rapidly and strongly binds to the soil, and the equilibrium time for paraquat is 1−2 h in clay soil. 38,48 The data were fitted using pseudo-first-and pseudo-secondorder kinetic models and they best fit to our data obtained by a pseudo-second-order model (Figure 6). The adsorption constants (K) for free PQ, commercial PQ, and NP:PQ were 1.77, 1.96, and 1.39, and the maximum quantity adsorbed (q e max) values were 0.429, 0.428, and 0.424, respectively.…”

Section: Journal Of Agricultural and Food Chemistrymentioning

confidence: 97%

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Pectin/Chitosan/Tripolyphosphate Nanoparticles: Efficient Carriers for Reducing Soil Sorption, Cytotoxicity, and Mutagenicity of Paraquat and Enhancing Its Herbicide Activity

Rashidipour

Maleki

Kordi

et al. 2019

J. Agric. Food Chem.

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As a potent herbicide capable of contaminating water and soil environments, paraquat, which is still widely used worldwide, is toxic to mammals, algae, aquatic animals, etc. Paraquat was loaded on novel nanoparticles composed of pectin, chitosan, and sodium tripolyphosphate (PEC/CS/TPP). The size, polydispersity index, and ζ potential of nanoparticles were characterized. Further assessments were carried out by SEM, AFM, FT-IR, and DSC. The encapsulation was highly efficient, and there was a delayed release pattern of paraquat. The encapsulated herbicide was less toxic to alveolar and mouth cell lines. Moreover, the mutagenicity of the formulation was significantly lower than those of pure or commercial forms of paraquat in a Salmonella typhimurium strain model. The soil sorption of paraquat and the deep soil penetration of the nanoparticle-associated herbicide were also decreased. The herbicidal activity of paraquat for maize or mustard was not only preserved but also enhanced after encapsulation. It was concluded that paraquat encapsulation with PEC/CS/TPP nanoparticles is highly efficient and the formulation has significant herbicide activity. It is less toxic to human environment and cells, as was evidenced by less soil sorption, cytotoxicity, and mutagenicity. Hence, paraquat-loaded PEC/CS/TPP nanoparticles have potential advantages for future use in agriculture.

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“…The equilibrium time was about 75 min. In previous reports, paraquat rapidly and strongly binds to the soil, and the equilibrium time for paraquat is 1–2 h in clay soil. , …”

Section: Resultsmentioning

confidence: 84%

Section: Journal Of Agricultural and Food Chemistrymentioning

confidence: 97%

Pectin/Chitosan/Tripolyphosphate Nanoparticles: Efficient Carriers for Reducing Soil Sorption, Cytotoxicity, and Mutagenicity of Paraquat and Enhancing Its Herbicide Activity

Rashidipour

Maleki

Kordi

et al. 2019

J. Agric. Food Chem.

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“…In 2009 the Pesticide Board announced they were waiting for a study on Integrated Weed Management and alternatives on Paraquat, commissioned by the Roundtable on Sustainable Palm Oil (RSPO) before they make the final decision on Paraquat. Paraquat is still on the market in Malaysia, theoretically restricted for use on oil palms less than 2 years old [7].…”

Section: Introductionmentioning

confidence: 99%

Determination of Paraquat (Herbicide) Residue Level in Sandy Clay Loam Soil Using High Performance Liquid Chromatography

Wong

2021

J. Basic Appl. Sci.

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Pesticide is considered as the most widely used form of agricultural chemical. Pesticide residue is the remaining pesticide on or in soil after pesticide is applied on agriculture soil. Soil is a component that is crucial to life. The research purposely concerned on major effects that could be contributed from medium to unlimited application of pesticide. The soil samples were systematically collected from 5 plots and Paraquat residues concentrations were determined in dissimilar depth of soil layers. The herbicide used was Paraquat that contained Paraquat Dichloride. High Performance Liquid Chromatography (HPLC) analysis detected the peak area volumes of Paraquat in soil samples at level ranging from 0.3 to 5.9 mg/l. The concentration of Paraquat in sandy clay loam soil showed that herbicide leached downward to the depth of 15 cm. The maximum concentration of Paraquat residue was detected at 0 to15 cm of soil depth at 2.783 mg/l. In highly organic soils, adsorption is weaker and Paraquat remains herbicidally active for longer, up to 29 days in one trial on soil with 98% organic matter [1]. Oral dose, LD50 for human is equal to 40-60 mg/kg [2] while the lowest fatal dose recorded for human was 17 mg/kg, but even lower doses may be fatal for children [3].

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“…This compound results in neurological damage, renal and hepatic insufficiency, lacerations in mouth, nose and throat and severe damage to the lungs (Blanco-Ayala et al 2014). In the soil, paraquat is absorbed by organic matter and depending on soil composition, can remain there for up to 5 years (Pateiro-Moure et al 2009;Muhamad et al 2011;Conde-Cid et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Degradation of the herbicide paraquat by macromycetes isolated from southeastern Mexico

2017

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Fifty-four macromycetes, isolated from southeastern Mexico, were used in order to evaluate their capacity for degradation and tolerance to the herbicide paraquat. Ten of these strains were capable of growing in a solid culture medium in the presence of 200 ppm paraquat. Subsequently, assays to evaluate the degradation of the xenobiotic in a liquid medium were carried out. Of the ten strains evaluated, three presented the highest levels of degradation of the compound, which were (54.2%), (54.1%) and They presented the highest overall degradation percentage (70.7%) after 12 days culture. The presence of ligninolytic enzymes in these strains was evaluated. only presented aryl alcohol oxidase activity; however, with the data obtained, it was not possible to conclude whether this specific enzyme is responsible for paraquat degradation. The level of degradation obtained is above the one reported for , one of the few reports on paraquat degradation. This is the first report on the contaminant degradation capacity of.

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Adsorption study of 14C-paraquat in two Malaysian agricultural soils

Cited by 17 publications

References 19 publications

Pectin/Chitosan/Tripolyphosphate Nanoparticles: Efficient Carriers for Reducing Soil Sorption, Cytotoxicity, and Mutagenicity of Paraquat and Enhancing Its Herbicide Activity

Pectin/Chitosan/Tripolyphosphate Nanoparticles: Efficient Carriers for Reducing Soil Sorption, Cytotoxicity, and Mutagenicity of Paraquat and Enhancing Its Herbicide Activity

Determination of Paraquat (Herbicide) Residue Level in Sandy Clay Loam Soil Using High Performance Liquid Chromatography

Degradation of the herbicide paraquat by macromycetes isolated from southeastern Mexico

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