Fate characterization of bound residues of 14C-Pyraoxystrobin in soils

Formation of bound residues (BR) has generally been considered as a detoxification process for organic contaminants. BR is an indispensable component for risk assessment of pesticides. In this study, BR of 14C-pyraoxystrobin in three soils cultivated for 100 days were characterized in light fraction...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2021-01, Vol.263, p.128023, Article 128023
Main Authors: Yang, Tilong, Chen, Yan, Wang, Zhixue, Ye, Qingfu, Wang, Haiyan
Format: Article
Language:English
Subjects:
14C-pyraoxystrobin
Bound residues
fulvic acids
humic acids
humin
humus
hydrolysis
isotopes
pyraoxystrobin
radioactivity
Risk assessment
soil
Soil organic matters
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Summary:Formation of bound residues (BR) has generally been considered as a detoxification process for organic contaminants. BR is an indispensable component for risk assessment of pesticides. In this study, BR of 14C-pyraoxystrobin in three soils cultivated for 100 days were characterized in light fraction (LF), loosely combined humus (LCH), stably combined humus (SCH), humic acid (HA), fulvic acid (FA), and humin. Isotope labeling technique was used to detect the distribution of BR of 14C-pyraoxystrobin in the six fractions of soil organic matter (SOM). The results showed that the amount of total BR was positively correlated with the SOM content (p 
ISSN:0045-6535
DOI:10.1016/j.chemosphere.2020.128023