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The interfacial interaction between Dechlorane Plus (DP) and polystyrene nanoplastics (PSNPs): An overlooked influence factor for the algal toxicity of PSNPs

The Science of The Total Environment 2023 15 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Jianling Wang, Jianling Wang, Jianling Wang, Aurang Zeb, Aurang Zeb, Qi Wang, Ruiying Shi, Ruiying Shi, Jianling Wang, Jianling Wang, Jianling Wang, Jianling Wang, Ruiying Shi, Aurang Zeb, Ruiying Shi, Ruiying Shi, Aurang Zeb, Ruiying Shi, Aurang Zeb, Jianling Wang, Fan Mo, Fan Mo, Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Aurang Zeb, Ruiying Shi, Ruiying Shi, Ruiying Shi, Weitao Liu Ruiying Shi, Weitao Liu Weitao Liu Lingzuo Meng, Lingzuo Meng, Lingzuo Meng, Aurang Zeb, Aurang Zeb, Aurang Zeb, Aurang Zeb, Aurang Zeb, Aurang Zeb, Ruiying Shi, Aurang Zeb, Ruiying Shi, Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Lingzuo Meng, Lingzuo Meng, Lingzuo Meng, Lingzuo Meng, Lingzuo Meng, Aurang Zeb, Weitao Liu Ruiying Shi, Weitao Liu Weitao Liu Aurang Zeb, Weitao Liu Aurang Zeb, Ruiying Shi, Aurang Zeb, Aurang Zeb, Aurang Zeb, Ruiying Shi, Ruiying Shi, Aurang Zeb, Aurang Zeb, Aurang Zeb, Ruiying Shi, Fan Mo, Weitao Liu Fan Mo, Aurang Zeb, Fan Mo, Aurang Zeb, Aurang Zeb, Ruiying Shi, Aurang Zeb, Fan Mo, Aurang Zeb, Ruiying Shi, Jianling Wang, Aurang Zeb, Aurang Zeb, Ruiying Shi, Weitao Liu Aurang Zeb, Ruiying Shi, Jianling Wang, Jianling Wang, Jianling Wang, Jianling Wang, Aurang Zeb, Ruiying Shi, Jianling Wang, Fan Mo, Jianling Wang, Jianling Wang, Jianling Wang, Jianling Wang, Ruiying Shi, Weitao Liu Ruiying Shi, Jianling Wang, Ruiying Shi, Aurang Zeb, Jianling Wang, Aurang Zeb, Jianling Wang, Jianling Wang, Jianling Wang, Jianling Wang, Weitao Liu Weitao Liu Jianling Wang, Jianling Wang, Weitao Liu Jianling Wang, Jianling Wang, Ruiying Shi, Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu

Summary

Researchers investigated how a flame retardant chemical called Dechlorane Plus interacts with polystyrene nanoplastics and found that the two pollutants bind together and become more harmful to algae than either one alone. When exposed to both contaminants simultaneously, algae showed reduced photosynthesis, greater growth inhibition, and significantly increased oxidative damage. The study suggests that the combined effects of nanoplastics and their chemical additives pose greater environmental risks than previously recognized.

Polymers

As pollution has attracted attention due to its wide distribution. An environmental concern that may be overlooked is that NPs additives are easily released into the environment due to their physical combination with NPs. However, the knowledge gaps still exist about the interfacial reactions of NPs and the additives (e.g. flame retardants) and the joint ecological effect. In the present study, fourier transform infrared (FTIR) spectrometer coupled with 2D correlation spectroscopy (2D-COS) analysis revealed the interfacial reactions between polystyrene nanoplastics (PSNPs) and Dechlorane Plus (DP). Results showed that carbon‑oxygen bonds and carbon‑chlorine bonds were the important binding sites during adhesion and DP could reduce the colloidal stability. Single and joint ecological effects of PSNPs and DP on the microalgae Chlorella vulgaris were further deliberated. Reduced photosynthetic efficiency (reduced F/F by 0.03 %), higher growth inhibition (16.15 %) and oxidative damage (increased ROS by 152 %) were observed in algae under co-exposure. Notably, DP could significantly increase the attachment of PSNPs to the surface of the algae. Metabolomics further revealed that co-exposure significantly down-regulated amino acid metabolism and tricarboxylic acid cycle (TCA) cycle, and up-regulated fatty acid metabolism. The present study provides new insights into the risk assessment of NPs in aquatic environment by investigating the interfacial reaction mechanism and combined ecotoxicity of NPs and additives.

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