Sorption of low levels of nonionic and anionic surfactants on soil: effects on sorption of triticonazole fungicide

Beigel, C.; Barriuso, Enrique; Calvet, Raoul

doi:10.1002/(sici)1096-9063(199809)54:1<52::aid-ps779>3.0.co;2-z

Cited by 31 publications

(9 citation statements)

References 23 publications

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“…It is evident that the presence of surfactant reduced slightly the removal efficiency of 2,4-D and atrazine from 78% to 75.3% and from 82 to 78.6%, respectively. This result is in agreement with the result of the study conducted by Beigel et al [57] that the nonionic and anionic surfactants had very insignificant effect on triticonazole sorption. The solubilization of organic contaminants by surfactants is well known because of micelle forming characteristics of surfactants.…”

Section: Effect Of Surfactantssupporting

confidence: 93%

Effect of Different Inorganic and Organic Compounds on Sorption of 2,4-D and Atrazine

Alam

Dikshit

Bandyophadyay

2002

Journal of Environmental Science and Health, Part B

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In this study, the effects of size of adsorbent, temperature, pH of solution, ionic strength, presence of inorganic substances such as calcium ion, magnesium ions, chloride ions, fertilizers and presence of organic substances such as dissolved organic matter, surfactant, other herbicides on sorption of 2,4-D and atrazine onto rubber granules were investigated. The removal efficiency was more for fine adsorbent particles. Temperature played an important role in sorption process. Temperature effect was endothermic for 2,4-D and exothermic for atrazine, respectively. The removals were maximum at pH 4 for 2,4-D and at pH 6 for atrazine. The presence of other herbicide (butachlor) reduced sorption capacity of rubber granules by approximately 10% for both 2,4-D and atrazine. All other factors had insignificant effect on sorption capacity. The mathematical expressions were developed for predicting the overall percentage removal of 2,4-D and atrazine on the basis of major four controlling factors viz. adsorbent size, temperature, pH and presence of other herbicide.

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Section: Effect Of Surfactantssupporting

confidence: 93%

Effect of Different Inorganic and Organic Compounds on Sorption of 2,4-D and Atrazine

Alam

Dikshit

Bandyophadyay

2002

Journal of Environmental Science and Health, Part B

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“…In a previous paper,15 we reported similar, almost linear isotherms in the surfactant‐free system and in systems containing the surfactants. Triticonazole sorption was not affected by the presence of low concentrations of the anionic surfactants FLK and MNS90.…”

Section: Resultssupporting

confidence: 54%

“…It protects the cereal crop throughout much of its growth, and consequently triticonazole controls major seedborne, foliar and straw diseases. In a previous paper,15 we found that triticonazole sorption was not modified by the presence of low levels of the formulation anionic surfactants Soprophor FLK, and Supragil MNS90 as evidenced by the similar isotherms observed in the surfactant‐free system and in systems containing the surfactants. The present study aimed to evaluate the influence on triticonazole solubilisation and sorption on soil of agronomic levels of the surfactants, and other adjuvants in the real formulation.…”

Section: Introductionmentioning

confidence: 56%

“…Similarly, the addition of increasing concentrations of the blank formulations up to 200 mg litre −1 did not affect significantly the sorption of triticonazole (Fig 4). For such low amounts of blank formulations, the surfactant concentrations would be well below the CMC in the soil–water systems 15…”

Section: Resultsmentioning

confidence: 99%

“…However, low levels of surfactant may still affect pesticide sorption in several ways. Solubilisation can occur at surfactant concentrations below the CMC,15 and sorption of the surfactants on the soil matrix can enhance pesticide sorption 15. 16 Surfactants may also affect pesticide sorption indirectly by dispersing soil colloids and thus altering soil physical properties 17.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of formulation on triticonazole solubilisation and sorption in a soil-water system

Beigel

Barriuso

2000

Pest Manag. Sci.

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Fate, uptake, and distribution of nanoencapsulated pesticides in soil–earthworm systems and implications for environmental risk assessment

Firdaus

Agatz

Hodson

et al. 2018

Enviro Toxic and Chemistry

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Nanopesticides are novel plant protection products offering numerous benefits. Because nanoparticles behave differently from dissolved chemicals, the environmental risks of these materials could differ from conventional pesticides. We used soil-earthworm systems to compare the fate and uptake of analytical-grade bifenthrin to that of bifenthrin in traditional and nanoencapsulated formulations. Apparent sorption coefficients for bifenthrin were up to 3.8 times lower in the nano treatments than in the non-nano treatments, whereas dissipation half-lives of the nano treatments were up to 2 times longer. Earthworms in the nano treatments accumulated approximately 50% more bifenthrin than those in the non-nano treatments. In the non-nano treatments, most of the accumulated material was found in the earthworm tissue, whereas in the nano treatments, the majority resided in the gut. Evaluation of toxicokinetic modeling approaches showed that models incorporating the release rate of bifenthrin from the nanocapsule and distribution within the earthworm provided the best estimations of uptake from the nano-formulations. Overall, our findings indicate that the risks of nanopesticides may be different from those of conventional formulations. The modeling presented provides a starting point for assessing risks of these materials but needs to be further developed to better consider the behavior of the nanoencapsulated pesticide within the gut system. Environ Toxicol Chem 2018;37:1420-1429. © 2018 SETAC.

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Sorption of low levels of nonionic and anionic surfactants on soil: effects on sorption of triticonazole fungicide

Cited by 31 publications

References 23 publications

Effect of Different Inorganic and Organic Compounds on Sorption of 2,4-D and Atrazine

Effect of Different Inorganic and Organic Compounds on Sorption of 2,4-D and Atrazine

Influence of formulation on triticonazole solubilisation and sorption in a soil-water system

Fate, uptake, and distribution of nanoencapsulated pesticides in soil–earthworm systems and implications for environmental risk assessment

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