Quantifying effects of primary parameters on adsorption–desorption of atrazine in soils

Huang, Yingwei; Liu, Zhongzhen; He, Yan; Zeng, Fang; Wang, Ronghui

doi:10.1007/s11368-012-0572-3

Cited by 29 publications

(19 citation statements)

References 52 publications

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“…The term Bbioavailability^refers to the fraction of a chemical in soil that can be taken up by living organisms or the degree to which a compound is free to move to an organism (Stokes et al 2005). The environmental fate of pesticides in soils is influenced by the addition of exogenous carbon (compost, biochar, or activated carbon), thereby increasing the organic matter content of the soil and consequently affecting sorption and transport of many organic pollutants in soils (Barriuso et al 1997;Cox et al 2001;Beesley et al 2010;Huang et al 2013;Marchal et al 2013). Several studies have shown that the addition of exogenous carbon results in a decrease in groundwater contamination by leaching (Sánchez-Camazano et al 1997;Cox et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Compost addition reduces porosity and chlordecone transfer in soil microstructure

Woignier

Clostre²,

Fernandes³

et al. 2015

Environ Sci Pollut Res

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Chlordecone, an organochlorine insecticide, pollutes soils and contaminates crops and water resources and is biomagnified by food chains. As chlordecone is partly trapped in the soil, one possible alternative to decontamination may be to increase its containment in the soil, thereby reducing its diffusion into the environment. Containing the pesticide in the soil could be achieved by adding compost because the pollutant has an affinity for organic matter. We hypothesized that adding compost would also change soil porosity, as well as transport and containment of the pesticide. We measured the pore features and studied the nanoscale structure to assess the effect of adding compost on soil microstructure. We simulated changes in the transport properties (hydraulic conductivity and diffusion) associated with changes in porosity. During compost incubation, the clay microstructure collapsed due to capillary stresses. Simulated data showed that the hydraulic conductivity and diffusion coefficient were reduced by 95 and 70% in the clay microstructure, respectively. Reduced transport properties affected pesticide mobility and thus helped reduce its transfer from the soil to water and to the crop. We propose that the containment effect is due not only to the high affinity of chlordecone for soil organic matter but also to a trapping mechanism in the soil porosity.

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Section: Introductionmentioning

confidence: 99%

Compost addition reduces porosity and chlordecone transfer in soil microstructure

Woignier

Clostre²,

Fernandes³

et al. 2015

Environ Sci Pollut Res

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“…Following OC, K f was influenced most by soil pH ( r = −0.27, P = 0.0006, n = 155), indicating that increasing pH decreased K f . Others have also reported a negative correlation between pH and K f ( r = −0.577, p < 0.05) (Huang et al, 2013) and K d (McGlamery and Slife, 1966). Research by Jenks et al (1998) confirmed the negative correlation between pH and K f and demonstrated that sorption can be predicted by pH ( R 2 = 0.82).…”

Section: Resultsmentioning

confidence: 89%

“…The conclusion of OC to be the most important factor agrees with previous studies conducted at individual field sites in Europe, North America, and South America (Stevenson, 1972; Jenks et al, 1998; Pignatello, 1998; Worrall et al, 2001; Daniel et al, 2002; Spark and Swift, 2002; Coquet, 2003). The strong correlation of OC content and atrazine sorption is due to a variety of functional groups found in soil organic matter, such as hydrophobic, hydrophilic, and free radicals (Huang et al, 2013), for which atrazine has a strong affinity. Although some studies reported that sorption depended more on total OC content rather than soil organic matter characteristics (Boivin et al, 2005), other research indicated that OC characteristics such as aromaticity could vary among different fractions and offer differing sorption capacities (Ahmad et al, 2001; Ding et al, 2002).…”

Section: Resultsmentioning

confidence: 99%

“…minerals may exist as suitable sorption sites under low pH conditions in which atrazine could be protonated. It is likely that ionic bonding between protonated atrazine molecule amino groups and humic acid functional groups decreased as soil pH increased (McGlamery and Slife, 1966; Huang et al, 2013). In addition, this pH‐dependent relationship can be explained by decreased van der Waal forces, hydrogen bonds, and decreased sorption via SiOH groups (Frissel, 1961; McGlamery and Slife, 1966; Boivin et al, 2005).…”

Section: Resultsmentioning

confidence: 99%

“…Further, soil properties, such as texture and pH, were not included in the models for comparison. Other factors, such as Fe oxides and the ratio of clay to total OC, have also been suggested as important parameters for prediction of atrazine sorption (Huang et al, 2013), but they were not incorporated into the models, which could contribute to the differences in results between the meta‐analysis and experimental study.…”

Section: Resultsmentioning

confidence: 99%

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A Global Meta‐Analysis to Predict Atrazine Sorption from Soil Properties

Gannon

Arellano

et al. 2018

J of Env Quality

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Atrazine (2‐chloro‐4‐ethylamino‐6‐isopropylamino‐1,3,5‐triazine) is one of the most widely used herbicides worldwide, and groundwater contamination is of concern, especially in heavily used regions and in edaphic conditions prone to leaching. Soil sorption plays an essential role in atrazine environmental fate, yet consistent atrazine risk prediction remains limited. A quantitative meta‐analysis was conducted to characterize the effect of soil properties on atrazine sorption, using 378 previous observations in 48 publications from 1985 to 2015 globally, which included data on soil properties and sorption parameters. A supplemental regional study was conducted to test the derived meta‐analysis models. The meta‐analysis indicated that percentage organic C (OC) was the most important parameter for estimating atrazine sorption, followed by percentage silt, soil pH, and percentage clay. Meta‐analysis and supplemental study models were developed for Freundlich sorption coefficients (Kf) and sorption distribution coefficients (Kd) as a function of OC. The global meta‐analysis models generated positive linear trends for OC with Kf and Kd (R2 = 0.197 and 0.205, respectively). Organic C was highly correlated with Kf and Kd in supplemental experimental study models (R2 = 0.93 and 0.92, respectively), indicating accurate prediction of sorption within the evaluated region. Continental models were investigated, which improved the goodness of fit. Models developed via meta‐analysis may be used to predict atrazine sorption over wide ranges of data, whereas more accurate and refined prediction can be achieved by specific regional models through experimental studies. However, such models could be improved if standardized agroclimatic conditions, soil classification, and other key variables were more widely reported. Core Ideas Meta‐analysis quantified soil properties governing atrazine sorption. Organic C content had the highest correlation with atrazine soil sorption. Meta‐analysis models showed similar trends to independent experimental results. Continental and supplemental models improved fit compared with global models. Standard climate and soil taxonomic data should be reported to optimize models.

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Interaction between Microbes DNA and Atrazine in Black Soil Analyzed by Spectroscopy

Zhang

Wang

Guo

et al. 2015

CLEAN Soil Air Water

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It could be shown that atrazine bound to microbes DNA in black soil by using ethidium bromide (EB) as a fluorescence probe. To study the interaction between atrazine and the microbes DNA in black soil, spectral absorption and fluorescence analysis were adopted. Atrazine, when bound to DNA, showed a hyperchromic and red shift in the absorption spectra and fluorescence quenching (>50%) in the fluorescence spectra, which indicated the intercalation. The effect of phosphate ion showed that there were electrostatic attractions with the anionic sugar‐phosphate backbone of DNA. The ratio plots “fluorescence intensities in the absence” to “fluorescence intensities in the presence of a quencher” (Fo/F) showed that the quenching of fluorescence by atrazine was a combined quenching process. The results indicated that there were two binding modes, intercalation and electrostatic attractions, happened simultaneously. The hyperchromicity in the absorption spectra indicated the breaking or denaturation of DNA, and a fluorescence inhibiting effect showed that atrazine had a high ability to bind to the DNA of black soil microbes. Based on these results, it was speculated that the binding between atrazine and the DNA the black soil microbes could inhibit some functions of the nucleic acid, restrain microbial activity or cause genotoxicity.

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Quantifying effects of primary parameters on adsorption–desorption of atrazine in soils

Cited by 29 publications

References 52 publications

Compost addition reduces porosity and chlordecone transfer in soil microstructure

Compost addition reduces porosity and chlordecone transfer in soil microstructure

A Global Meta‐Analysis to Predict Atrazine Sorption from Soil Properties

Interaction between Microbes DNA and Atrazine in Black Soil Analyzed by Spectroscopy

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