Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Human Health Effects Nanoplastics Sign in to save

Toxicity effects of polystyrene nanoplastics and arsenite on Microcystis aeruginosa

The Science of The Total Environment 2023 37 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 60 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Yuhang Lian, Aurang Zeb, Jiantao Li, Yuhang Lian, Qi Wang, Qi Wang, Aurang Zeb, Aurang Zeb, Ruiying Shi, Aurang Zeb, Cordelia Sealy, Yuhang Lian Ruiying Shi, Ruiying Shi, Ruiying Shi, Qi Wang, Yuhang Lian Qi Wang, Ruiying Shi, Ruiying Shi, Aurang Zeb, Cordelia Sealy, Yuhang Lian Weitao Liu, Weitao Liu, Ruiying Shi, Jiantao Li, Aurang Zeb, Ruiying Shi, Ruiying Shi, Ruiying Shi, 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, Weitao Liu, Yuhang Lian, Yuhang Lian Aurang Zeb, Aurang Zeb, Yuhang Lian, Aurang Zeb, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Aurang Zeb, Weitao Liu, Aurang Zeb, Yuhang Lian, Yuhang Lian Yuhang Lian, Yuhang Lian, Qi Wang, Weitao Liu, Aurang Zeb, Yuhang Lian Aurang Zeb, Weitao Liu, Yuhang Lian Ruiying Shi, Ruiying Shi, Weitao Liu, Weitao Liu, Yuhang Lian, Aurang Zeb, Yuhang Lian Aurang Zeb, Aurang Zeb, Ruiying Shi, Aurang Zeb, Ruiying Shi, Yuhang Lian Weitao Liu, Weitao Liu, Aurang Zeb, Aurang Zeb, Aurang Zeb, Aurang Zeb, Aurang Zeb, Qi Wang, Qi Wang, Ruiying Shi, Ruiying Shi, Yuhang Lian, Ruiying Shi, Qi Wang, Qi Wang, Qi Wang, Aurang Zeb, Aurang Zeb, Qi Wang, Qi Wang, Qi Wang, Qi Wang, Weitao Liu, Yuhang Lian Yuhang Lian Ruiying Shi, Yuhang Lian, Qi Wang, Aurang Zeb, Qi Wang, Aurang Zeb, Qi Wang, Aurang Zeb, Yuhang Lian, Zeqi Zheng, Jiantao Li, Jiantao Li, Qi Wang, Aurang Zeb, Qi Wang, Aurang Zeb, Qi Wang, Aurang Zeb, Ruiying Shi, Aurang Zeb, Zeqi Zheng, Ruiying Shi, Ruiying Shi, Ruiying Shi, Weitao Liu, Yuhang Lian Cordelia Sealy, Cordelia Sealy, Zeqi Zheng, Zeqi Zheng, Ruiying Shi, Cordelia Sealy, Ruiying Shi, Ruiying Shi, Zeqi Zheng, Yuhang Lian, Aurang Zeb, Qi Wang, Cordelia Sealy, Zeqi Zheng, Aurang Zeb, Jiantao Li, Jiantao Li, Yuhang Lian Weitao Liu, Cordelia Sealy, Ruiying Shi, Qi Wang, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Yuhang Lian Cordelia Sealy, Jiantao Li, Jiantao Li, Jiantao Li, Yuhang Lian, Jiantao Li, Zeqi Zheng, Zeqi Zheng, Zeqi Zheng, Cordelia Sealy, Weitao Liu, Zeqi Zheng, Zeqi Zheng, Jiantao Li, Zeqi Zheng, Zeqi Zheng, Weitao Liu, Cordelia Sealy, Zeqi Zheng, Zeqi Zheng, Weitao Liu, Qi Wang, Yuhang Lian, Qi Wang, Weitao Liu, Yuhang Lian

Summary

Researchers studied how two types of polystyrene nanoplastics with different surface properties interact with arsenic to affect freshwater algae. They found that nanoplastics with a sulfonic acid surface modification caused more severe growth inhibition and metabolic disruption in the algae, while both types reduced arsenic uptake by the organisms. The study highlights that the specific surface chemistry of nanoplastics significantly influences their environmental toxicity.

Polymers

Study Type Environmental

Despite the increasing research on the fate of nanoplastics (NPs, <100 nm) in freshwater systems, little is known about the joint toxic effects of metal(loid)s and NPs modified with different functional groups on microalgae. Here, we explored the joint toxic effects of two types of polystyrene NPs [one modified with a sulfonic acid group (PSNPs-SOH), and one without this functional group (PSNPs)] and arsenic (As) on the microalgae Microcystis aeruginosa. The results highlighted that PSNPs-SOH showed a smaller hydrodynamic diameter and greater potential to adsorb positively charged ions than PSNPs, contributing to the more severe growth inhibition, while both of them produced oxidative stress. Metabolomics further revealed that the fatty acid metabolism of the microalgae was significantly up-regulated under both NPs exposure, while PSNPs-SOH down-regulated the tricarboxylic acid cycle (TCA cycle) of the microalgae. As uptake by algae was significantly reduced by 82.58 % and 59.65 % in the presence of 100 mg/L PSNPs and PSNPs-SOH, respectively. The independent action model showed that the joint toxicity of both NPs with As was assessed as antagonistic. In addition, PSNPs and PSNPs-SOH had dissimilar effects on the composition of the microalgae extracellular polymeric substances (EPS), resulting in different uptake and adsorption of As, thereby affecting the physiology and biochemistry of algae. Overall, our findings propose that the specific properties of NPs should be considered in future environmental risk assessments.

Read via DOI PubMed

Share this paper

Post Share Share Pin Email