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Synergistic effect of microplastic fragments and benzophenone‐3 additives on lethal and sublethal Daphnia magna toxicity

Journal of Hazardous Materials 2020 120 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.

Jinyoung Song, Joorim Na, Jinyoung Song, Jinyoung Song, Joorim Na, Jerry Achar, Jinyoung Song, Jinyoung Song, Jinyoung Song, Joorim Na, Joorim Na, Joorim Na, Joorim Na, Joorim Na, Joorim Na, Jinyoung Song, Joorim Na, Jinho Jung Jinyoung Song, Jinyoung Song, Jinyoung Song, Jerry Achar, Joorim Na, Jinyoung Song, Jinyoung Song, Jinyoung Song, Jinyoung Song, Joorim Na, Joorim Na, Joorim Na, Joorim Na, Jinho Jung Jinho Jung Jinho Jung Jinho Jung Jinho Jung Jinho Jung Jinho Jung Jerry Achar, Jinyoung Song, Jinho Jung Jinho Jung Jinho Jung Joorim Na, Jinho Jung Jinho Jung Jinho Jung Jinyoung Song, Jinho Jung Jinho Jung Jinyoung Song, Jinho Jung Jinho Jung Jinho Jung Jinho Jung Jinho Jung Jinho Jung Jinho Jung Jinho Jung Jinho Jung Jinho Jung Joorim Na, Jinho Jung

Summary

Researchers assessed the combined effects of polyethylene microplastic fragments and the UV-filter additive benzophenone-3 on the water flea Daphnia magna. They found that microplastic fragments were significantly more acutely toxic than the dissolved additive alone, and the combination produced synergistic lethal and sublethal effects. The study highlights that microplastic particles carrying chemical additives may pose greater risks to aquatic invertebrates than either stressor in isolation.

Polymers

Models

Daphnia

The interactive effect of polyethylene microplastic (MP) fragments and benzophenone-3 (BP-3) additives on Daphnia magna was assessed in the present study. The 48 h median effective concentration (EC) revealed that MP fragments (37.24 ± 11.76 μm; 3.90 mg L) were over 80 times more acutely toxic than polyethylene microbeads (37.05 ± 3.96 μm; 323 mg L), possibly because of their irregular shape and high specific surface area. Moreover, the addition of BP-3 (10.27 ± 0.40 % w/w) to MP fragments (MP + BP-3) resulted in greater acute toxicity to D. magna (EC = 0.99 mg L) compared to MP fragments (EC = 3.90 mg L) or BP-3 (EC = 2.29 mg L) alone. Additionally, MP + BP-3 exposure induced a synergistic increase in reactive oxygen species, total antioxidant capacity, and lipid peroxidation in D. magna. These synergistic effects can be attributed to enhanced bioconcentrations of BP-3 in D. magna caused by MP fragments. These findings suggest that MP fragments containing chemical additives represent a synergistic ecological risk and have the potential to harm aquatic organisms.

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