Sorption of Tribenuron-methyl, Chlorsulfuron, and Imazamethabenz-methyl by Soils

Álvarez-Benedí, Javier; Cartón, A.; Torres, J.C.

doi:10.1021/jf970710x

Cited by 17 publications

(10 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In fact, in some cases, with soils containing pre‐existing residues of DEA, adsorption isotherms with negative slopes were found which shows that with these soils more material was desorbed into the aqueous phase than the corresponding amount used for the spiking of soils. Negative adsorption has also been reported for weak acids (Alvarez‐Benedi et al , 1998).…”

Section: Resultsmentioning

confidence: 79%

Kinetics and adsorption of metolachlor and atrazine and the conversion products (deethylatrazine, deisopropylatrazine, hydroxyatrazine) in the soil profile of a river basin

Vryzas

Papadopoulou‐Mourkidou

Σουλιοσ

et al. 2007

European J Soil Science

View full text Add to dashboard Cite

The adsorption kinetics and adsorption parameters of metolachlor, atrazine, deethylatrazine (DEA), deisopropylatrazine (DIA) and hydroxyatrazine (HA) were investigated in a soil profile in a maize field formed from recent alluvial deposits in a river basin in Greece. We used the batch equilibrium method modified to simulate field conditions as closely as possible for the use and practices related to soil applied pre-emergence herbicides. Pseudo-equilibrium times, determined by kinetic studies, were achieved after 16, 16, 24, 24 and 48 hours for metolachlor, DIA, DEA, HA and atrazine, respectively. At pseudo-equilibrium the percentage of the adsorbed amount increased in the order of DEA (10%) < DIA (14%) < atrazine (27%) < metolachlor (43%) ( HA (94%) which indicates that more than 57% of all compounds except for HA are in solution and available for transport to deeper soil layers when conditions similar to those simulated in the laboratory exist in the field. Adsorption isotherms of all compounds and in most of the cases correlated well with the Freundlich model and adsorption coefficients (K f ) decreased with increased soil depth. Principal component and multiple regression analyses confirmed the importance of the soil organic carbon content on the adsorption capacity of soils for all compounds except HA in the plough layers (0-40 cm). In the subsurface soils (40-110 cm) variables such as clay content and pH were more important. For HA, the K f values determined for the plough and subsurface soil layers were better correlated with clay content and pH. Also in the subsurface soils, the variation in organic carbon content was not correlated with the variation of K f values. Thus calculated K oc-f -values misrepresent the adsorptive capacity of these soils towards the compounds studied.

show abstract

Section: Resultsmentioning

confidence: 79%

Kinetics and adsorption of metolachlor and atrazine and the conversion products (deethylatrazine, deisopropylatrazine, hydroxyatrazine) in the soil profile of a river basin

Vryzas

Papadopoulou‐Mourkidou

Σουλιοσ

et al. 2007

European J Soil Science

View full text Add to dashboard Cite

show abstract

“…These studies revealed that TEB has a moderate adsorption but TBM presents a low adsorption in different soils (Kotoula-Syka et al, 1993;Álvarez-Benedí et al, 1998;Cadková et al, 2013;Papadopoulou et al, 2016). Therefore, the experiment on the adsorption isotherms of both pesticides was not carried out in the present study.…”

Section: Degradation Of Teb and Tbm Alone And Combined Application Inmentioning

confidence: 94%

“…In this study, soil adsorption affinity of TEB was significantly higher than TBM, which is in accordance with mentioned previous studies. Based on the research of Álvarez-Benedí et al (1998), the low adsorption capacity of TBM should due to this pesticide is predominantly in the anionic form in the soil (pH 7.28), and would be repelled by the negatively charged clay particles. For combined use, the soil adsorption affinity of TEB was not affected by TBM, however the adsorption of TBM decreased in soil involved TEB (Figure 2).…”

Section: Degradation Of Teb and Tbm Alone And Combined Application Inmentioning

confidence: 99%

Degradation and adsorption of tebuconazole and tribenuron-methyl in wheat soil, alone and in combination

Wang

Zhi

Zhang

et al. 2017

Chilean J. Agric. Res.

View full text Add to dashboard Cite

In practice, pesticides are usually simultaneously applied or one after another for crop protection. This often leads to a coexistence of pesticide mixtures in soil. One of the most important processes influencing the behavior of a pesticide in the environment is its degradation and adsorption in soil. Thus, the degradation and adsorption behaviors of tebuconazole (TEB) and tribenuron-methyl (TBM) alone and combined application in wheat soil (pH 7.28) were studied. The concentrations of TEB and TBM in soil were determined using a quick, easy, cheap, efficient, rugged and safe method (QuEChERS) with ultrahigh-performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS). Results showed that TEB has longer half-lives compared with TBM in the tested soils when they were applied individually. The degradation of TEB was markedly affected by concentration and soil microorganisms. In the non-sterilized soil, half-lives of 0.8 and 80 mg kg -1 TEB were 16.4 and 69.3 d, respectively, and half-lives of 0.8 and 80 mg kg -1 TEB were 20.4 and 73.5 d in the sterilized soil, respectively. The degradation of TBM was not affected by TEB in both soils; however, TBM could reduce the degradation of TEB. Compared to TEB alone, the rates of degradation of 80 mg kg -1 TEB in presence of 32 mg kg -1 TBM were reduced 15.9% and 18.2% in non-sterilized and sterilized soils, respectively. Soil adsorption affinity of TEB was significantly higher than TBM. When used combined, adsorption capacity of TEB was not affected by TBM. However, the adsorption of TBM was obviously inhibited in presence of TEB.

show abstract

“…The sorption behavior of several sulfonylureas has been previously reported ( − ). Sulfonylureas generally exhibit low sorption in laboratory studies, and their sorption extent is negatively correlated with pH.…”

Section: Introductionmentioning

confidence: 99%

Azimsulfuron Sorption−Desorption on Soil

Pusino

Pinna

Gessa

2004

J. Agric. Food Chem.

View full text Add to dashboard Cite

The sorption and desorption of the herbicide azimsulfuron, N-[[(4-dimethoxypyrimidin-2-yl)amino]carbonyl]1-methyl-4-(2-methyl-2H-tetrazole-5-yl)1H-pyrazole-5-sulfonamide, were studied using five soils. Sorption isotherms conformed to the Freundlich equation. It was found that pH is the main factor influencing the sorption and that the sorption on soils was negatively correlated with pH. The highest level of sorption was measured on soils with low pH and high organic carbon content. Moreover, inorganic soil colloids, for example, smectite clay minerals and iron oxides, contributed to the sorption of azimsulfuron. Desorption was hysteretic on soils with high organic and inorganic colloid contents.

show abstract

Sorption of Tribenuron-methyl, Chlorsulfuron, and Imazamethabenz-methyl by Soils

Cited by 17 publications

References 17 publications

Kinetics and adsorption of metolachlor and atrazine and the conversion products (deethylatrazine, deisopropylatrazine, hydroxyatrazine) in the soil profile of a river basin

Kinetics and adsorption of metolachlor and atrazine and the conversion products (deethylatrazine, deisopropylatrazine, hydroxyatrazine) in the soil profile of a river basin

Degradation and adsorption of tebuconazole and tribenuron-methyl in wheat soil, alone and in combination

Azimsulfuron Sorption−Desorption on Soil

Contact Info

Product

Resources

About