Adsorption-desorption and leaching behaviors of broflanilide in four texturally different agricultural soils from China

Xie, Guai; Li, Baotong; Tang, Limei; Rao, Lei; Dong, Zeming

doi:10.1007/s11368-020-02831-9

Cited by 14 publications

(9 citation statements)

References 32 publications

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“…This was mainly due to the high surface areas and negative charges associated with fine particles, particularly for several types of clay minerals and organic matter (Huang et al, 2014). In the Freundlich theory, the value of n reflects the heterogeneity or adsorption reaction intensity of the adsorbent; the greater the n value, the better the adsorption performance of the adsorbent (Xie et al, 2021).…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Effects of In Situ Remediation on Copper Distribution and Soil Aggregate Adsorption–Desorption Characteristics in Smelter-Impacted Soil

Xing

Peng

et al. 2022

Front. Environ. Sci.

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To evaluate the effect of in situ chemical remediation on copper (Cu) immobilisation and migration, in situ chemically remediated soils from a smelter-impacted field were partitioned into four aggregate size fractions and their Cu adsorption characteristics were investigated. The results indicate that the highest Cu concentration occurred in the <0.053 mm size fraction, while the highest Cu mass loading was obtained in the 0.25–2 mm size fraction (39.9–42.5%). However, in situ remediation increased the Cu mass loading levels in the >0.25 mm aggregates. A pseudo-second-order model was used to fit the adsorption process obtained in kinetic experiments, while the data from isothermal experiments were described using the Freundlich model. The fastest adsorption rate was observed in the <0.053 mm fraction, and the adsorption capacity of the soil aggregates improved after combined in situ remediation. The amount of Cu2+ adsorbed increased with increasing pH. The <0.053 mm fraction exhibited lower desorption compared with the other fractions at low pH values. In addition, all particle size aggregates treated with apatite and Elsholtzia splendens had the lowest desorption rates at different pH values.

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Section: Adsorption Isothermsmentioning

confidence: 99%

Effects of In Situ Remediation on Copper Distribution and Soil Aggregate Adsorption–Desorption Characteristics in Smelter-Impacted Soil

Xing

Peng

et al. 2022

Front. Environ. Sci.

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“…A number of researchers have reported that the soil matrix is a highly complicated system in which environmental processes (e.g., the sorption-desorption and leaching of herbicides) are affected by multiple factors, including the soil organic matter (OM) content, pH, cation exchange capacity (CEC), microbial or chemical degradation, chemical type, environmental conditions (e.g., temperature, humidity, and rainfall), and texture (Alonso et al, 2011;Rao et al, 2020;Xie et al, 2020;. Nevertheless, soil organic or inorganic colloids and pH (pH < pK a neutral state and pH > pK a negative charge) can influence soil-herbicide interactions.…”

Section: Introductionmentioning

confidence: 99%

Environmental behaviors of (<i>E</i>) pyriminobac-methyl in agricultural soils

Zhou

Jia

et al. 2022

SOIL

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Abstract. E or pyriminobac-methyl (EPM), a pyrimidine benzoic acid esters herbicide, has a high potential as weedicide; nevertheless, its environmental behaviors are still not well understood. In this study, we systematically investigated, for the first time, the adsorption–desorption, degradation, and leaching behaviors of EPM in agricultural soils from five exemplar sites in China (Phaeozems – S1; Anthrosol – S2; Ferralsol – S3; Alisol – S4; Plinthosol – S5) through laboratory simulation experiments. Our results show that the EPM adsorption–desorption results were well fitted by the Freundlich model (R2>0.9999). In the analyzed soils, the Freundlich adsorption (i.e., Kf ads) and desorption (i.e., Kf des) coefficients of EPM varied between 0.85 and 32.22 mg1-1/n L1/n kg−1 and 0.78–5.02 mg1-1/n L1/n kg−1, respectively. The mobility of EPM in soils S1–S5 was categorized as immobile, slightly immobile, highly mobile, slightly mobile, and slightly mobile, respectively. Moreover, the degradation of EPM reflected first-order kinetics, where its half-life ranged between 37.46 and 66.00 d, depending on the environmental conditions, and abiotic degradation was predominant in the degradation of this compound. Overall, the high leaching ability and desorption capacity of EPM were accompanied by a low adsorption capacity, and there were no significant relationships between pH and the leaching rate of EPM in the five types of soils. In contrast, the organic matter content, cation exchange capacity, and soil clay content were the main components responsible for the observed leaching rates. We found that EPM degrades easily, has a high adsorption affinity, and a low mobility in S1, which results in a low contamination risk for groundwater systems. On the contrary, this compound degrades slowly in S2, S3, S4, and S5, due to a low adsorption affinity and moderate mobility, which results in a high contamination risk for groundwater systems. Therefore, our results may serve as a reference for evaluating the risks involved in the increasingly wide application of this compound.

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“…A number of researchers have reported that the soil matrix is a highly complicated system, in which environmental processes (e.g., the sorption-desorption and leaching of herbicides) are affected by multiple factors, including the soil organic matter (OM) content, pH, cation exchange capacity (CEC), microbial or chemical degradation, chemical type, environmental conditions (e.g., temperature, humidity, and rainfall), and texture (Alonso et al 2011;Rao et al 2020;Xie et al 2020;Zhou et al 2019a). Nevertheless, soil organic or inorganic colloids and pH (pH < pKa neutral state and pH > pKa negative charge) can influence soil-herbicide interactions.…”

Section: Introductionmentioning

confidence: 99%

Environmental Behaviors of (E)-Pyriminobac-methyl in Agricultural Soils

Zhou

Jia

et al. 2021

Preprint

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(E)-Pyriminobac-methyl (EPM), a pyrimidine benzoic acid esters herbicide, has a high potential as weedicide; nevertheless, its environmental behaviors are still not well understood. In this study, we systematically investigated for the first time the adsorption–desorption, degradation, and leaching behaviors of EPM in agricultural soils from five exemplar sites in China (characterized by different physicochemical properties) through laboratory simulation experiments. The EPM adsorption–desorption results were well fitted by the Freundlich model (R2 > 0.9999). In the analyzed soils, the Freundlich adsorption (i.e., Kf-ads) and desorption (i.e., Kf-des) coefficients of EPM varied between 0.85–32.22 mg1−1/n L1/n kg−1 and between 0.78–5.02 mg1−1/n L1/n kg−1, respectively. Moreover, the degradation of EPM reflected first-order kinetics: its half-life ranged between 37.46–66.00 d depending on the environmental conditions, and abiotic degradation was predominant in the degradation of this compound. The mobility of EPM in the five soils varied from immobile to highly mobile. The groundwater ubiquity score ranged between 0.9765–2.7160, indicating that EPM posed threat to groundwater quality. Overall, the results of this study demonstrate the easy degradability of EPM, as well as its high adsorption affinity and low mobility in soils with abundant organic matter content and high cation exchange capacity. Under such conditions, there is a relatively low contamination risk for groundwater systems in relation to this compound. Overall, our findings provide a solid basis for predicting the environmental impacts of EPM.

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Adsorption-desorption and leaching behaviors of broflanilide in four texturally different agricultural soils from China

Cited by 14 publications

References 32 publications

Effects of In Situ Remediation on Copper Distribution and Soil Aggregate Adsorption–Desorption Characteristics in Smelter-Impacted Soil

Effects of In Situ Remediation on Copper Distribution and Soil Aggregate Adsorption–Desorption Characteristics in Smelter-Impacted Soil

Environmental behaviors of (<i>E</i>) pyriminobac-methyl in agricultural soils

Environmental Behaviors of (E)-Pyriminobac-methyl in Agricultural Soils

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Adsorption-desorption and leaching behaviors of broflanilide in four texturally different agricultural soils from China

Cited by 14 publications

References 32 publications

Effects of In Situ Remediation on Copper Distribution and Soil Aggregate Adsorption–Desorption Characteristics in Smelter-Impacted Soil

Effects of In Situ Remediation on Copper Distribution and Soil Aggregate Adsorption–Desorption Characteristics in Smelter-Impacted Soil

Environmental behaviors of (&lt;i&gt;E&lt;/i&gt;) pyriminobac-methyl in agricultural soils

Environmental Behaviors of (E)-Pyriminobac-methyl in Agricultural Soils

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Environmental behaviors of (<i>E</i>) pyriminobac-methyl in agricultural soils