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@article{1409680,
author = {Ilina, Svetlana M. and Ollivier, Patrick and Slomberg, Danielle and Baran, Nicole and Pariat, Anne and Devau, Nicolas and SaniandKast, Nicole and Scheringer, Martin and Labille, Jerome},
article_location = {CAMBRIDGE},
article_number = {10},
doi = {http://dx.doi.org/10.1039/c7en00445a},
keywords = {TIO2 NANOPARTICLES; ENGINEERED NANOPARTICLES; AGGREGATION KINETICS; ORGANIC-MATTER; PHOTOCATALYTIC DEGRADATION; OXIDE NANOPARTICLES; SURFACE SPECIATION; ACID ADSORPTION; IONIC-STRENGTH; HUMIC-ACID},
language = {eng},
issn = {2051-8153},
journal = {ENVIRONMENTAL SCIENCE-NANO},
title = {Investigations into titanium dioxide nanoparticle and pesticide interactions in aqueous environments},
url = {http://pubs.rsc.org/en/Content/ArticleLanding/2017/EN/C7EN00445A#!divAbstract},
volume = {4},
year = {2017}
}
TY - JOUR
ID - 1409680
AU - Ilina, Svetlana M. - Ollivier, Patrick - Slomberg, Danielle - Baran, Nicole - Pariat, Anne - Devau, Nicolas - Sani-Kast, Nicole - Scheringer, Martin - Labille, Jerome
PY - 2017
TI - Investigations into titanium dioxide nanoparticle and pesticide interactions in aqueous environments
JF - ENVIRONMENTAL SCIENCE-NANO
VL - 4
IS - 10
SP - 2055-2065
EP - 2055-2065
PB - ROYAL SOC CHEMISTRY
SN - 20518153
KW - TIO2 NANOPARTICLES
KW - ENGINEERED NANOPARTICLES
KW - AGGREGATION KINETICS
KW - ORGANIC-MATTER
KW - PHOTOCATALYTIC DEGRADATION
KW - OXIDE NANOPARTICLES
KW - SURFACE SPECIATION
KW - ACID ADSORPTION
KW - IONIC-STRENGTH
KW - HUMIC-ACID
UR - http://pubs.rsc.org/en/Content/ArticleLanding/2017/EN/C7EN00445A#!divAbstract
L2 - http://pubs.rsc.org/en/Content/ArticleLanding/2017/EN/C7EN00445A#!divAbstract
N2 - The influence of three pesticides (glyphosate, aminomethylphosphonic acid (AMPA) and 2,4-dichlorophenoxyacetic acid (2,4-D)) on the colloidal fate of TiO2 nanoparticles (NPs; anatase and rutile) has been investigated under aqueous conditions of variable chemical composition (Na+ or Ca2+), ionic strength (IS, 10(-4) -10(-1) M), and pH (5 or 8). Sorption and degradation of these pesticides in the presence of the NPs were evaluated. In the absence of the pesticides, increasing IS, the presence of the divalent cation Ca2+ and a pH value close to the NP isoelectric point favored NP homoaggregation as expected. However, at low IS (<= 10(-2) M in NaCl; <= 10(-3) M in CaCl2), in the presence of a few mu g L-1 of glyphosate and rutile in the mg L-1 range, NP homoaggregation was prevented, despite the pH = 5 close to the NP isoelectric point (4.0-4.2). The phosphonate group of the pesticide drove glyphosate adsorption onto the NP, while the carboxylic group was responsible for the electrostatic stabilization of the NP. The stabilizing effect of glyphosate on NP aggregation however appears to be temporary. Furthermore, TiO2 NPs also adsorbed AMPA and promoted degradation of glyphosate to AMPA. These results highlight new evidence of NP-pesticide interactions and the differences in their fate and potential co-migration behavior in aquatic environments.
ER -
ILINA, Svetlana M., Patrick OLLIVIER, Danielle SLOMBERG, Nicole BARAN, Anne PARIAT, Nicolas DEVAU, Nicole SANI-KAST, Martin SCHERINGER and Jerome LABILLE. Investigations into titanium dioxide nanoparticle and pesticide interactions in aqueous environments. \textit{ENVIRONMENTAL SCIENCE-NANO}. CAMBRIDGE: ROYAL SOC CHEMISTRY, 2017, vol.~4, No~10, p.~2055-2065. ISSN~2051-8153. Available from: https://dx.doi.org/10.1039/c7en00445a.
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