Exploring additives beyond phthalates: Release from plastic mulching films, biodegradation and occurrence in agricultural soils.
Sci Total Environ
; 918: 170763, 2024 Mar 25.
Article
en En
| MEDLINE
| ID: mdl-38336072
ABSTRACT
It is widely recognized that applications of plastic films result in plastic pollution in agroecosystems. However, there is limited knowledge on the release and occurrence of additives beyond phthalates in agricultural soil. In this study, the rates of release and biodegradation of various additives, including phthalates, bisphenols, organophosphate esters, phenolic antioxidants, and ultraviolet absorbents from mulching films in soil were quantified by laboratory incubation. The rates of release and biodegradation ranged from 0.069 d-1 to 5.893 d-1 and from 1.43 × 10-3 d-1 to 0.600 d-1, respectively. Both of these rates were affected by temperature, flooding, and the properties of additives, films, and soils. An estimated 4000 metric tons of these additives were released into soil annually in China exclusively. The total concentrations of these additives in 80 agricultural soils varied between 228 and 3455 µg kg-1, with phenolic antioxidants, phthalates, and bisphenols accounting for 54.1%, 25.2%, and 17.9% of the total concentrations, respectively. A preliminary risk assessment suggested that the current levels of these additives could potentially present moderate hazards to the soil ecosystem.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Ácidos Ftálicos
/
Suelo
/
Contaminantes del Suelo
Tipo de estudio:
Risk_factors_studies
País/Región como asunto:
Asia
Idioma:
En
Revista:
Sci Total Environ
Año:
2024
Tipo del documento:
Article