Dissemination of antibiotics through the wastewater-soil-plant-earthworm continuum.
Sci Total Environ
; 858(Pt 3): 159841, 2023 Feb 01.
Article
em En
| MEDLINE
| ID: mdl-36397604
ABSTRACT
Under the ongoing climate change scenario, treated municipal wastewater (TMW) is a potential candidate for irrigated agriculture but may result in the exposure of agricultural environments to antibiotics. We studied the transfers of trimethoprim, sulfamethoxazole, and sulfapyridine in the TMW-soil-plant-earthworm continuum under greenhouse/laboratory conditions. Irrigation of potted spinach and radish with as-collected TMW resulted in no transfers of antibiotics into soil or plants owing to their low concentrations in the tertiary-treated TMW. However, TMW spiked with higher antibiotic concentrations led to transfers through this continuum. High initial inputs, slow soil degradation, and chemical speciation of the antibiotics, coupled with an extensive plant-root distribution, were important factors enhancing the plant uptake of antibiotics. In microcosm studies, transfers from vegetable materials into earthworms were low but showed potential for bioaccumulation. Such food chain transfers of antibiotics may be a driver for antibiotic resistance in agricultural systems, which is an area worthy of future study. These issues can perhaps be mitigated through high levels of TMW purification to effectively remove antibiotic compounds.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Oligoquetos
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article