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Microplastics emerge as a hotspot for dibutyl phthalate sources in rivers and oceans: Leaching behavior and potential risks

Journal of Hazardous Materials 2024 19 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Lujian Lin, Bo Yuan, Bo Yuan, Hanyi Li, Hanyi Li, Lujian Lin, Lujian Lin, Bo Yuan, Lujian Lin, Lujian Lin, Hualong Hong, Lujian Lin, Yucan Liu, Hualong Hong, Yue Ke Hanyi Li, Hanyi Li, Bo Yuan, Bo Yuan, Hanyi Li, Hualong Hong, Yue Ke, Haoliang Lu, Hanyi Li, Weifeng Zhang, Haoliang Lu, Yue Ke Hanyi Li, Chongling Yan, Hualong Hong, Jingchun Liu, Haoliang Lu, Jingchun Liu, Hualong Hong, Haoliang Lu, Haoliang Lu, Hualong Hong, Jingchun Liu, Jingchun Liu, Haoliang Lu, Chongling Yan, Hualong Hong, Jingchun Liu, Hualong Hong, Haoliang Lu, Hualong Hong, Chongling Yan, Chongling Yan, Yue Ke Yue Ke

Summary

Researchers investigated how the plasticizer dibutyl phthalate leaches from PVC microplastics in both freshwater and seawater environments. They found that UV irradiation and water chemistry significantly influenced leaching rates, with higher release observed under simulated environmental conditions. The findings suggest that microplastics in rivers and oceans act as ongoing sources of potentially harmful chemical additives.

Polymers

PVC

Study Type Environmental

Dibutyl phthalate (DBP) as a plasticizer has been widely used in the processing of plastic products. Nevertheless, these DBP additives have the potential to be released into the environment throughout the entire life cycle of plastic products. Herein, the leaching behavior of DBP from PVC microplastics (MPs) in freshwater and seawater and its potential risks were investigated. The results show that the plasticizer content, UV irradiation, and hydrochemical conditions have a great influence on the leaching of DBP from the MPs. The release of DBP into the environment increases proportionally with higher concentrations of additive DBP in MPs, particularly when it exceeds 15 %. The surface of MPs undergoes accelerated oxidation and increased hydrophilicity under UV radiation, thereby facilitating the leaching of DBP. Through 30 continuous leaching experiments, the leaching of DBP from MPs in freshwater and seawater can reach up to 12.28 and 5.42 mg g, respectively, indicating that MPs are a continuous source of DBP pollution in the aquatic environment. Moreover, phthalate pollution index (PPI) indicates that MPs can significantly increase DBP pollution in marine environment through land and sea transport processes. Therefore, we advocate that the management of MPs waste containing DBP be prioritized in coastal sustainable development.

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