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Occurrence and effects of plastic additives on marine environments and organisms: A review
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This review examines chemical additives found in plastics, such as flame retardants, phthalates, and bisphenol A, and how they leach into the marine environment as plastics accumulate and fragment. Researchers summarize evidence showing that these additives have been detected in marine water, sediment, and organisms, and can transfer from ingested plastic into animal tissues. The findings highlight that the chemical risk from plastic additives deserves as much attention as the physical impacts of microplastic particles themselves.
Plastics debris, especially microplastics, have been found worldwide in all marine compartments. Much research has been carried out on adsorbed pollutants on plastic pieces and hydrophobic organic compounds (HOC) associated with microplastics. However, only a few studies have focused on plastic additives. These chemicals are incorporated into plastics from which they can leach out as most of them are not chemically bound. As a consequence of plastic accumulation and fragmentation in oceans, plastic additives could represent an increasing ecotoxicological risk for marine organisms. The present work reviewed the main class of plastic additives identified in the literature, their occurrence in the marine environment, as well as their effects on and transfers to marine organisms. This work identified polybrominated diphenyl ethers (PBDE), phthalates, nonylphenols (NP), bisphenol A (BPA) and antioxidants as the most common plastic additives found in marine environments. Moreover, transfer of these plastic additives to marine organisms has been demonstrated both in laboratory and field studies. Upcoming research focusing on the toxicity of microplastics should include these plastic additives as potential hazards for marine organisms, and a greater focus on the transport and fate of plastic additives is now required considering that these chemicals may easily leach out from plastics.
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This review examines the chemical additives found in marine microplastics, including flame retardants, plasticizers, and UV stabilizers, and assesses the risks they may pose to ocean ecosystems. Researchers found that while the transfer of some chemicals from ingested plastics to organisms has been demonstrated, results on actual bioaccumulation are inconclusive. The study suggests that current risk assessment approaches may be inadequate given the sheer number of chemicals associated with marine plastic particles.
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This review examines how chemical additives that leach out of plastics -- including hormone disruptors like BPA and phthalates -- affect organisms in both water and land environments. The chemicals' harmful effects depend on environmental conditions like temperature and UV exposure, which influence how much leaches out and how easily organisms absorb it. The findings highlight that the danger of plastic pollution extends beyond the physical particles to the toxic chemicals they release.
Understanding the leaching of plastic additives and subsequent risks to ecosystems
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This review explains how chemical additives in plastics -- including plasticizers, flame retardants, and stabilizers -- can leach out of microplastics into the environment and potentially into the human body. Some of these additives, such as phthalates and brominated flame retardants, are persistent, build up in living tissue, and are linked to hormone disruption and other health effects. The authors note that our understanding of the full toxicity risk from leaching plastic additives is still limited.
Mitigating persistent organic pollutants from marine plastics through enhanced recycling: A review
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This review examines how persistent organic pollutants such as flame retardants, phthalates, and bisphenol A leach from marine plastic waste into the surrounding environment. Researchers discuss how enhanced recycling methods could reduce the release of these harmful additives by keeping plastics out of the ocean. The study highlights the hidden chemical hazards that plastic debris introduces to marine air, water, and sediment.
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