Environmental fate of nanopesticides: durability, sorption and photodegradation of nanoformulated clothianidin

Environmental Science. Nano
Melanie KahThilo Hofmann

Abstract

A lot of research efforts are currently dedicated to the development of nano-enabled agrochemicals. Knowledge about their environmental behaviour is however scarce, which impedes the assessment of the new risk and benefits relative to currently used agrochemicals. With the aim to advance our understanding of the fate of nanopesticides in the environment and support the development of robust exposure assessment procedures, the main objectives of the study were to (i) investigate the extent to which three nanoformulations can affect the photodegradation and sorption of the insecticide clothianidin, and (ii) evaluate various approaches to estimate durability, a key parameter for the exposure assessment of nanopesticides. The nanoformulations increased the photodegradation half-life in water by a maximum of 21% relative to the conventional formulation. Sorption to soil was investigated by two methods and over time, and results show that sorption was increased by up to 51% and 10%, relative to unformulated clothianidin and the commercial formulation, respectively. Our results generally indicate that nanoformulations may have a greater impact on the fate of pesticide active ingredients than commercial formulations. It is important to...Continue Reading

References

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Feb 18, 2006·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Qing HuangQunhui Wang
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Dec 18, 2013·Environment International·Melanie Kah, Thilo Hofmann
Jan 30, 2014·Environmental Science and Pollution Research International·Melanie KahThilo Hofmann
Apr 24, 2014·Journal of Agricultural and Food Chemistry·Rai S KookanaPaul J Van den Brink
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Aug 17, 2017·Journal of Agricultural and Food Chemistry·Glen W WalkerDivina A Navarro

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Citations

Sep 23, 2019·Journal of Nanobiotechnology·Marcela Candido CamaraLeonardo Fernandes Fraceto
Dec 21, 2019·Environmental Science and Pollution Research International·Olga Yu SelyutinaNikolay E Polyakov
Mar 11, 2020·Frontiers in Bioengineering and Biotechnology·Estefânia Vangelie Ramos CamposLeonardo Fernandes Fraceto
Oct 21, 2020·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·B BoccaG Amendola
Jun 11, 2021·Journal of Agricultural and Food Chemistry·Xiang-Ping KongJuan Wang
Oct 27, 2021·The Science of the Total Environment·Monica GranettoTiziana Tosco

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Methods Mentioned

BETA
dynamic light scattering

Software Mentioned

GraphPad
LUFA
GraphPad Prism

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