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Influence of the adjuvants in a commercial formulation of the fungicide "Switch" on the adsorption of their active ingredients: cyprodinil and fludioxonil, on soils devoted to vineyard.
J Hazard Mater. 2011 Oct 15; 193:288-95.JH

Abstract

The objective of this work was to assess the effect of adjuvants in the sorption in soils of the fungicides, cyprodinil and fludioxonil, usually applied together in a mixture commonly called 'Switch'. Water suspensions of a commercial formulation of Switch were used in phase partition experiments for a set of selected soils from vineyards. A clean-up procedure of the supernatant was developed for the phase separation in presence of the adjuvants prior to quantification of cyprodinil and fludioxonil. The maximum sorption on the solid phase (which includes soil and other solids from the commercial formulation of Switch) was 2000 mg kg(-1) for fludioxonil and 3000 mg kg(-1) for cyprodinil after incubation with 800 mg L(-1) of Switch. However, adsorption to soil particles were lower; fludioxonil concentrations adsorbed in soils range from 50 to 80 mg kg(-1) of soil and cyprodinil concentrations range from 120 to 260 mg kg(-1) of soil. Adjuvants increased the solubility of fludioxonil in pure water at 25 °C up to 5 times that of the pure substance (from 1.8 to 9 mg L(-1) in control samples), and show a strong influence on the adsorption in soil. Soil pH, effective cation exchange capacity and copper content due to past anti fungal copper-based sprays, have also influence on the adsorption of the active ingredients in presence of adjuvants.

Authors+Show Affiliations

Nutrition and Bromatology Group, Analytical and Food Chemistry Department, Faculty of Sciences, University of Vigo, E-32004 Ourense, Spain.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21868160

Citation

Pose-Juan, E, et al. "Influence of the Adjuvants in a Commercial Formulation of the Fungicide "Switch" On the Adsorption of Their Active Ingredients: Cyprodinil and Fludioxonil, On Soils Devoted to Vineyard." Journal of Hazardous Materials, vol. 193, 2011, pp. 288-95.
Pose-Juan E, Rial-Otero R, Paradelo M, et al. Influence of the adjuvants in a commercial formulation of the fungicide "Switch" on the adsorption of their active ingredients: cyprodinil and fludioxonil, on soils devoted to vineyard. J Hazard Mater. 2011;193:288-95.
Pose-Juan, E., Rial-Otero, R., Paradelo, M., & López-Periago, J. E. (2011). Influence of the adjuvants in a commercial formulation of the fungicide "Switch" on the adsorption of their active ingredients: cyprodinil and fludioxonil, on soils devoted to vineyard. Journal of Hazardous Materials, 193, 288-95. https://doi.org/10.1016/j.jhazmat.2011.07.074
Pose-Juan E, et al. Influence of the Adjuvants in a Commercial Formulation of the Fungicide "Switch" On the Adsorption of Their Active Ingredients: Cyprodinil and Fludioxonil, On Soils Devoted to Vineyard. J Hazard Mater. 2011 Oct 15;193:288-95. PubMed PMID: 21868160.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of the adjuvants in a commercial formulation of the fungicide "Switch" on the adsorption of their active ingredients: cyprodinil and fludioxonil, on soils devoted to vineyard. AU - Pose-Juan,E, AU - Rial-Otero,R, AU - Paradelo,M, AU - López-Periago,J E, Y1 - 2011/08/05/ PY - 2011/02/11/received PY - 2011/06/27/revised PY - 2011/07/16/accepted PY - 2011/8/27/entrez PY - 2011/8/27/pubmed PY - 2012/1/19/medline SP - 288 EP - 95 JF - Journal of hazardous materials JO - J Hazard Mater VL - 193 N2 - The objective of this work was to assess the effect of adjuvants in the sorption in soils of the fungicides, cyprodinil and fludioxonil, usually applied together in a mixture commonly called 'Switch'. Water suspensions of a commercial formulation of Switch were used in phase partition experiments for a set of selected soils from vineyards. A clean-up procedure of the supernatant was developed for the phase separation in presence of the adjuvants prior to quantification of cyprodinil and fludioxonil. The maximum sorption on the solid phase (which includes soil and other solids from the commercial formulation of Switch) was 2000 mg kg(-1) for fludioxonil and 3000 mg kg(-1) for cyprodinil after incubation with 800 mg L(-1) of Switch. However, adsorption to soil particles were lower; fludioxonil concentrations adsorbed in soils range from 50 to 80 mg kg(-1) of soil and cyprodinil concentrations range from 120 to 260 mg kg(-1) of soil. Adjuvants increased the solubility of fludioxonil in pure water at 25 °C up to 5 times that of the pure substance (from 1.8 to 9 mg L(-1) in control samples), and show a strong influence on the adsorption in soil. Soil pH, effective cation exchange capacity and copper content due to past anti fungal copper-based sprays, have also influence on the adsorption of the active ingredients in presence of adjuvants. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/21868160/Influence_of_the_adjuvants_in_a_commercial_formulation_of_the_fungicide_"Switch"_on_the_adsorption_of_their_active_ingredients:_cyprodinil_and_fludioxonil_on_soils_devoted_to_vineyard_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(11)00955-1 DB - PRIME DP - Unbound Medicine ER -