2017
Investigations into titanium dioxide nanoparticle and pesticide interactions in aqueous environments
ILINA, Svetlana M.; Patrick OLLIVIER; Danielle SLOMBERG; Nicole BARAN; Anne PARIAT et al.Základní údaje
Originální název
Investigations into titanium dioxide nanoparticle and pesticide interactions in aqueous environments
Autoři
ILINA, Svetlana M.; Patrick OLLIVIER; Danielle SLOMBERG; Nicole BARAN; Anne PARIAT; Nicolas DEVAU; Nicole SANI-KAST; Martin SCHERINGER a Jerome LABILLE
Vydání
ENVIRONMENTAL SCIENCE-NANO, CAMBRIDGE, ROYAL SOC CHEMISTRY, 2017, 2051-8153
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10511 Environmental sciences
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 6.087
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/17:00100151
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
TIO2 NANOPARTICLES; ENGINEERED NANOPARTICLES; AGGREGATION KINETICS; ORGANIC-MATTER; PHOTOCATALYTIC DEGRADATION; OXIDE NANOPARTICLES; SURFACE SPECIATION; ACID ADSORPTION; IONIC-STRENGTH; HUMIC-ACID
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 5. 4. 2018 15:55, Ing. Nicole Zrilić
Anotace
V originále
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.
Návaznosti
| EF15_003/0000469, projekt VaV |
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| LM2015051, projekt VaV |
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