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Joint toxicity of microplastics with triclosan to marine microalgae Skeletonema costatum

Environmental Pollution 2018 337 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.

Feifei Liu, Su-chun Wang, Feifei Liu, Zhilin Zhu Shuguang Wang, Feifei Liu, Guangzhou Liu, Feifei Liu, Feifei Liu, Zhilin Zhu, Guangzhou Liu, Su-chun Wang, Su-chun Wang, Feifei Liu, Su-chun Wang, Feifei Liu, Feifei Liu, Zhilin Zhu Guangzhou Liu, Guangzhou Liu, Zhilin Zhu, Feifei Liu, Guangzhou Liu, Feifei Liu, Su-chun Wang, Su-chun Wang, Guangzhou Liu, Zhilin Zhu Zhilin Zhu, Su-chun Wang, Feifei Liu, Shuguang Wang, Feifei Liu, Feifei Liu, Feifei Liu, Zhilin Zhu Zhilin Zhu Zhilin Zhu Zhilin Zhu, Su-chun Wang, Feifei Zhao, Feifei Liu, Feifei Liu, Zhilin Zhu, Zhilin Zhu, Su-chun Wang, Feifei Liu, Feifei Liu, Shuguang Wang, Guangzhou Liu, Feifei Liu, Feifei Liu, Shuguang Wang, Su-chun Wang, Shuguang Wang, Su-chun Wang, Feifei Liu, Feifei Liu, Su-chun Wang, Guangzhou Liu, Feifei Liu, Feifei Zhao, Guangzhou Liu, Feifei Liu, Guangzhou Liu, Zhilin Zhu, Feifei Liu, Shuguang Wang, Guangzhou Liu, Zhilin Zhu Guangzhou Liu, Shuguang Wang, Shuguang Wang, Guangzhou Liu, Feifei Liu, Guangzhou Liu, Shuguang Wang, Guangzhou Liu, Guangzhou Liu, Shuguang Wang, Shuguang Wang, Shuguang Wang, Shuguang Wang, Shuguang Wang, Shuguang Wang, Guangzhou Liu, Zhilin Zhu

Summary

Researchers investigated the combined toxicity of triclosan and four types of microplastics on the marine microalga Skeletonema costatum. They found that while all microplastics individually inhibited algal growth, PVC and smaller particles had the strongest effects, and the joint toxicity with triclosan followed an antagonistic pattern rather than additive or synergistic. The study suggests that microplastics can adsorb organic pollutants and partially reduce their bioavailability, though the physical damage from smaller particles remains a significant concern.

Polymers

PE PS PVC

Toxicity of single microplastics on organisms has been reported widely, however, their joint toxicity with other contaminants on phytoplankton is rarely investigated. Here, we studied the toxicity of triclosan (TCS) with four kinds of microplastics namely polyethylene (PE, 74 μm), polystyrene (PS, 74 μm), polyvinyl chloride (PVC, 74 μm), and PVC800 (1 μm) on microalgae Skeletonema costatum. Both growth inhibition and oxidative stress including superoxide dismutase (SOD) and malondialdehyde (MDA) were determined. We found that TCS had obvious inhibition effect on microalgae growth within the test concentrations, and single microplastics also had significant inhibition effect which followed the order of PVC800 > PVC > PS > PE. However, the joint toxicity of PVC and PVC800 in combination with TCS decreased more than that of PE and PS. The higher adsorption capacity of TCS on PVC and PVC800 was one possible reason for the greater reduction of their toxicity. The joint toxicity of PVC800 was still most significant (PE < PVC < PS < PVC800) because of the minimum particle size. According to the independent action model, the joint toxicity systems were all antagonism. Moreover, the reduction of SOD was higher than MDA which revealed that the physical damage was more serious than intracellular damage. SEM images revealed that the aggregation of microplastics and physical damage on algae was obvious. Collectively, the present research provides evidences that the existence of organic pollutants is capable of influencing the effects of microplastics, and the further research on the joint toxicity of microplastics with different pollutants is urgent.

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