The effect of microplastics on behaviors of chiral imidazolinone herbicides in the aquatic environment : Residue, degradation and distribution

Copyright © 2021 Elsevier B.V. All rights reserved..

The pollution of aquatic environments by microplastics and herbicides has become a global concern. This study was focused on imazamox, imazapic, and imazethapyr sorption to polypropylene microplastics in water. And the potential effects of microplastics on herbicide enantiomer degradation and distributions in water, sediment, and water-sediment microcosms were investigated. Adsorption experiment results indicated that herbicide sorption to microplastics involved both chemisorption and physical adsorption. Degradation experiment results indicated that microplastics could markedly increase herbicide persistence in water and sediment. Marked stereoselective degradation was not found for the three herbicides in water and sediment, but stereoselective degradation of imazapic in water containing microplastics was found. The water-sediment microcosms experiment results indicated that microplastics have significant effect on stereoselectivity degradation and distribution in water and water-sediment microcosms for imazapic, and have little effect on stereoselectivity behaviors of imazamox and imazethapyr in water-sediment systems. Furthermore, the microcosm experiment results also indicated that herbicides can partition between water and microplastics and that microplastics could affect herbicide persistence and distributions in aquatic environments. The present study provides new insights into the fate of chiral pollutants in aquatic environments containing microplastics, and contributes to understanding behaviors of herbicides and microplastics in aquatic environments.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:418

Enthalten in:

Journal of hazardous materials - 418(2021) vom: 15. Sept., Seite 126176

Sprache:

Englisch

Beteiligte Personen:

Hu, Mingfeng [VerfasserIn]
Hou, Ning [VerfasserIn]
Li, Yuanfu [VerfasserIn]
Liu, Yanmei [VerfasserIn]
Zhang, Hui [VerfasserIn]
Zeng, Dongqiang [VerfasserIn]
Tan, Huihua [VerfasserIn]

Links:

Volltext

Themen:

059QF0KO0R
Enantioselective Degradation and Distribution
Herbicides
Imidazolinone Herbicides
Journal Article
Microplastics
Plastics
Research Support, Non-U.S. Gov't
Water
Water Pollutants, Chemical
Water-sediment Microcosms

Anmerkungen:

Date Completed 20.09.2021

Date Revised 20.09.2021

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.jhazmat.2021.126176

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM326504672