About: Density and surface tension of aqueous solutions of adjuvants used for tank-mixes with pesticides

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.agriculturejournals.cz/web/pse.htm?volume=58&firstPage=568&type=publishedArticle
Description	Adjuvants are surface active agents that are added to pesticide formulations or tank-mix to facilitate the mixing, application, or efficacy of these products. Addition of adjuvants changes the physico-chemical properties of spray liquid. In this work, we have focused in particular on surface tension and density of aqueous solutions of different adjuvants registered for mixing with herbicides. Eleven different adjuvants were subject of this study under laboratory conditions. An equation which enables determination of density of aqueous solutions in concentration range of 0-15 g/kg was designed. Average difference between the experimental and calculated density values amounts to +/- 0.006%. The concentration dependence of surface tension was utilized to determine the critical micelle concentration (cmc). Evidently, the cmc of most tested adjuvants was lower than the amount recommended by manufacturer, especially in case of adjuvants Dedal 90 EC and Mero 33528. For adjuvant Trend 90 EC the recommended rate is even lower than that obtained for the cmc. Maximum reduction of the surface tension of water was achieved with adjuvants Silwet L-77 and Break Superb. Adjuvants are surface active agents that are added to pesticide formulations or tank-mix to facilitate the mixing, application, or efficacy of these products. Addition of adjuvants changes the physico-chemical properties of spray liquid. In this work, we have focused in particular on surface tension and density of aqueous solutions of different adjuvants registered for mixing with herbicides. Eleven different adjuvants were subject of this study under laboratory conditions. An equation which enables determination of density of aqueous solutions in concentration range of 0-15 g/kg was designed. Average difference between the experimental and calculated density values amounts to +/- 0.006%. The concentration dependence of surface tension was utilized to determine the critical micelle concentration (cmc). Evidently, the cmc of most tested adjuvants was lower than the amount recommended by manufacturer, especially in case of adjuvants Dedal 90 EC and Mero 33528. For adjuvant Trend 90 EC the recommended rate is even lower than that obtained for the cmc. Maximum reduction of the surface tension of water was achieved with adjuvants Silwet L-77 and Break Superb. (en)
Title	Density and surface tension of aqueous solutions of adjuvants used for tank-mixes with pesticides Density and surface tension of aqueous solutions of adjuvants used for tank-mixes with pesticides (en)
skos:prefLabel	Density and surface tension of aqueous solutions of adjuvants used for tank-mixes with pesticides Density and surface tension of aqueous solutions of adjuvants used for tank-mixes with pesticides (en)
skos:notation	RIV/60461373:22340/12:43895947!RIV15-MSM-22340___
http://linked.open...avai/riv/aktivita	V Z
http://linked.open...avai/riv/aktivity	V, Z(MSM6046070901)
http://linked.open...iv/cisloPeriodika	12
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Bartovská, Lidmila
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola chemicko-technologická v Praze / Fakulta chemicko-inženýrská
http://linked.open...dnocenehoVysledku	130069
http://linked.open...ai/riv/idVysledku	RIV/60461373:22340/12:43895947
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	solubilization; micelles; efficacy; surfactants; CMC (en)
http://linked.open.../riv/klicoveSlovo	efficacy solubilization CMC micelles surfactants
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[AA4779B43388]
http://linked.open...i/riv/nazevZdroje	Plant Soil Environ
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	58
http://linked.open...iv/tvurceVysledku	Soukup, J. Bartovská, Lidmila Janků, J. Hamouzová, K. Jursík, M.
http://linked.open...ain/vavai/riv/wos	000312821800008
http://linked.open...n/vavai/riv/zamer	Setrvalé zemědělství, kvalita zemědělské produkce, krajinné a přírodní zdroje.
issn	1214-1178
number of pages	5 (xsd:int)
http://localhost/t...ganizacniJednotka	22340

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