Can ionic liquids exist in the soil environment? Effect of quaternary ammonium cations on glyphosate sorption, mobility and toxicity in the selected herbicidal ionic liquids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F23%3A10453736" target="_blank" >RIV/00216208:11310/23:10453736 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=RG74OLpaIr" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=RG74OLpaIr</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.molliq.2022.120981" target="_blank" >10.1016/j.molliq.2022.120981</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Can ionic liquids exist in the soil environment? Effect of quaternary ammonium cations on glyphosate sorption, mobility and toxicity in the selected herbicidal ionic liquids

Popis výsledku v původním jazyce

Ionic liquids (ILs) are described as low-impact green chemicals in which the cation can influence the properties of the anion through ion pair formation. We decided to see how stable ILs are in the soil environment. Herbicidal ILs consisting of hydrophilic glyphosate [Glyph] paired with hydrophilic choline [Chol], hydrophobic C(12) alkyl modified choline [C(12)Chol] and hydrophobic quaternary ammonium cation [C(16)TMA] were synthesized. The calculated interaction energies between ions (75.9-88.9 kcal/mol) were typical for ILs. The results showed independent sorption of cations and anions and no statistical effect of cations on anion sorption. Hydrophobic [C(16)TMA], [C(12)Chol] cations followed 99 % adsorption, and hydrophilic [Chol] revealed 42-45 % adsorption. The Freundlich constants were [C(16)TMA] K(f) = 4000 &gt; [C(12)Chol] K(f) = 3000 &gt; [Chol] K(f) = to 3 (mg(1-1/n) L(1/n g-1)). The preferential sorption of hydrophobic cations was also visible during leaching experiments and resembles the behavior of cationic surfactants. [Glyph] sorption was higher in organic-rich agricultural soil (approx. 45 %) compared to reference OECD soil (30 %), and the K(f) values were constant, regardless of the presence of cations. The lack of ionic pair integrity was also visualized by the toxicity and phytotoxicity results. In the soil environment, ILs are a mixture of independent cations and anions rather than a novel emerging contaminant.

Název v anglickém jazyce

Can ionic liquids exist in the soil environment? Effect of quaternary ammonium cations on glyphosate sorption, mobility and toxicity in the selected herbicidal ionic liquids

Popis výsledku anglicky

Ionic liquids (ILs) are described as low-impact green chemicals in which the cation can influence the properties of the anion through ion pair formation. We decided to see how stable ILs are in the soil environment. Herbicidal ILs consisting of hydrophilic glyphosate [Glyph] paired with hydrophilic choline [Chol], hydrophobic C(12) alkyl modified choline [C(12)Chol] and hydrophobic quaternary ammonium cation [C(16)TMA] were synthesized. The calculated interaction energies between ions (75.9-88.9 kcal/mol) were typical for ILs. The results showed independent sorption of cations and anions and no statistical effect of cations on anion sorption. Hydrophobic [C(16)TMA], [C(12)Chol] cations followed 99 % adsorption, and hydrophilic [Chol] revealed 42-45 % adsorption. The Freundlich constants were [C(16)TMA] K(f) = 4000 &gt; [C(12)Chol] K(f) = 3000 &gt; [Chol] K(f) = to 3 (mg(1-1/n) L(1/n g-1)). The preferential sorption of hydrophobic cations was also visible during leaching experiments and resembles the behavior of cationic surfactants. [Glyph] sorption was higher in organic-rich agricultural soil (approx. 45 %) compared to reference OECD soil (30 %), and the K(f) values were constant, regardless of the presence of cations. The lack of ionic pair integrity was also visualized by the toxicity and phytotoxicity results. In the soil environment, ILs are a mixture of independent cations and anions rather than a novel emerging contaminant.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Molecular Liquids

ISSN

0167-7322

e-ISSN

1873-3166

Svazek periodika

370

Číslo periodika v rámci svazku

15 January

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

120981

Kód UT WoS článku

000902162700010

EID výsledku v databázi Scopus

2-s2.0-85144592127