The Analysis of Polylactic Acid Oligomers and Their Fate in Laboratory and Agricultural Soil DOI

Jing Yang,

Changzhi Shi, Chaoran Xu

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Polylactic acid (PLA) is the most widely consumed biodegradable plastic worldwide. Though PLA products have advantages of easy degradation and a small carbon footprint, poly(lactic acid) oligomers (OLAs) released from been found to exhibit toxicity. Accurate quantification presence OLAs in soil crucial for understanding their occurrence environmental fate. In this study, we synthesized sequence-defined OLA standards deuterated (d-OLAs) developed broad-spectrum extraction method with water-saturated ethyl acetate 0.1% formic acid, achieving sensitive precise across various environments. The simulated experiments showed that PLA-based amounts OLAs, reaching peak within 24 h, followed by degradation, remaining detectable up 168 h. Meanwhile, degree polymerization (DP) 2 exhibited highest concentration, while higher-DP demonstrated greater stability compared others. field samples, were detected over long term beneath mulch films residual concentrations 16.10 ± 0.37 ng/g. This study bridges foundational analytical methods addresses data gaps further investigations into fates PLA.

Language: Английский

Effects of UV-aged tire wear particles (TWPs) on soil microorganisms: microbial community, microbial metabolism, cell defense and repair, and transmission of ARGs DOI

Yunhong Pu,

Yiming Hao,

Qianzhi Zeng

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(2), P. 115624 - 115624

Published: Jan. 28, 2025

Language: Английский

Citations

0
Progress of Microplastic Pollution in Vegetable Land in Guanzhong Plain Area DOI Creative Commons
Zhaoxin Zhang,

Ziru Niu

Frontiers in Science and Engineering, Journal Year: 2025, Volume and Issue: 5(3), P. 38 - 41

Published: March 19, 2025

With the advancement of agricultural modernization and wide application mulch film in crop planting, problem microplastic pollution has gradually become prominent. As an important vegetable production base Guanzhong Plain area, fields may pose a potential threat to soil ecological environment, quality safety human health. This paper focuses on current situation Plain, analyzes key factors affecting accumulation migration microplastics fields, puts forward targeted prevention control measures, aiming provide theoretical basis practical guidance for protecting environment ensuring safe vegetables.

Language: Английский

Citations

0
Microplastics alter CO2 emissions in the soils of the water fluctuation belt of the Three Gorges Reservoir in China DOI Creative Commons
Yang Li, Ke Sun, Dongyu Xu

et al.

Cell Reports Sustainability, Journal Year: 2025, Volume and Issue: unknown, P. 100385 - 100385

Published: April 1, 2025

Language: Английский

Citations

0
The Analysis of Polylactic Acid Oligomers and Their Fate in Laboratory and Agricultural Soil DOI

Jing Yang,

Changzhi Shi, Chaoran Xu

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Polylactic acid (PLA) is the most widely consumed biodegradable plastic worldwide. Though PLA products have advantages of easy degradation and a small carbon footprint, poly(lactic acid) oligomers (OLAs) released from been found to exhibit toxicity. Accurate quantification presence OLAs in soil crucial for understanding their occurrence environmental fate. In this study, we synthesized sequence-defined OLA standards deuterated (d-OLAs) developed broad-spectrum extraction method with water-saturated ethyl acetate 0.1% formic acid, achieving sensitive precise across various environments. The simulated experiments showed that PLA-based amounts OLAs, reaching peak within 24 h, followed by degradation, remaining detectable up 168 h. Meanwhile, degree polymerization (DP) 2 exhibited highest concentration, while higher-DP demonstrated greater stability compared others. field samples, were detected over long term beneath mulch films residual concentrations 16.10 ± 0.37 ng/g. This study bridges foundational analytical methods addresses data gaps further investigations into fates PLA.

Language: Английский

Citations

0