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A Glow Before Darkness: Toxicity of Glitter Particles to Marine Invertebrates
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Researchers tested the toxicity of glitter particles — a model microplastic made from plastic film — on the embryos of three marine invertebrate species: two sea urchin species and a mussel. Both green and white glitter caused dose-dependent developmental harm, with the mussel Perna perna being the most sensitive. The findings demonstrate that glitter particles used in cosmetics and crafts can be genuinely harmful to marine invertebrates, strengthening the case for restricting microplastic-based glitter in consumer products.
Glitter particles are considered a model of microplastics, which are used in a wide range of products. In this study, we evaluated the toxicity of green and white glitter dispersions on the embryonic development of the sea urchins Echinometra lucunte, Arbacia lixula, and the mussel Perna perna. The Toxicity Identification and Evaluation (TIE) approach was used to identify possible chemicals related to toxicity. Glitter dispersions were prepared using 0.05% ethanol. The tested dispersions ranged from 50 to 500 mg/L. The white glitter was composed of a vinyl chloride-methyl acrylate copolymer. The effective concentrations of green glitter to 50% embryos (EC50) were 246.1 (235.8 – 256.4) mg/L to A. lixula, 23.0 (20.2 - 25.8) mg/L to P. perna and 105.9 (61.2 - 150.2) mg/L, whereas the EC50 of white glitter to E. lucunter was 272.2 (261.5 – 282.9) mg/L. The EC50 for P. perna could not be calculated; however, the lowest effect concentration was 10 mg/L. The filtered suspension of green glitter had Ag levels exceeding the legal standards for marine waters. TIE showed that metals, volatiles, and oxidant compounds contribute to toxicity. The results showed that glitter may adversely affect marine organisms; however further studies are necessary to determine its environmental risks.
More Papers Like This
A Glow before Darkness: Toxicity of Glitter Particles to Marine Invertebrates
AI summary Read the abstract
Researchers evaluated the toxicity of glitter microplastic particles on marine invertebrate embryos, finding that both green and white glitter types caused developmental abnormalities in sea urchins and mussels, partly due to chemical leachates.
Sparkling plastic: Effects of exposure to glitter on the Mediterranean mussel Mytilus galloprovincialis
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Researchers examined the effects of glitter microplastics on Mediterranean mussels and found that smaller particles were retained more in the digestive tract and induced greater oxidative stress, while crumbled glitter fragments amplified toxic responses.
Ecotoxicological Assessment of “Glitter” Leachates in Aquatic Ecosystems: An Integrated Approach
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Leachates from nine types of commercial glitter were tested for toxicity in freshwater and saltwater model organisms across three soak periods up to 180 days. Photosynthesizing primary producers were most sensitive to glitter leachates, with some formulations causing significant growth inhibition, raising ecotoxicological concerns about this largely overlooked microplastic category.
Investigating on the toxicity and bio-magnification potential of synthetic glitters on Artemia salina
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Researchers assessed the toxic effects of polyethylene terephthalate glitter microplastics on Artemia salina (brine shrimp) as a model zooplankton species. The study found that glitter ingestion caused gut wall damage, decreased cholinesterase activity, and demonstrated biomagnification potential, suggesting that synthetic glitter particles pose measurable toxicological risks to aquatic organisms.
All that glitters is litter? Ecological impacts of conventional versus biodegradable glitter in a freshwater habitat.
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A mesocosm experiment compared the effects of conventional PET glitter versus biodegradable alternatives (including modified cellulose and mica) on freshwater ecosystems, finding no significant effect on biodiversity but a reduction in algae photosynthesis from conventional glitter. The results suggest biodegradable glitter alternatives may be less harmful, though the effects of both types at higher concentrations or over longer periods remain unclear.
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