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Additives of Plastic: Entry Into the Environment and Potential Risks to Human and Ecological Health
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This review synthesizes evidence on plastic chemical additives—including plasticizers, bisphenols, flame retardants, and PFAS—showing they leach from polymers throughout the plastic lifecycle and accumulate in human tissues, soils, and water, where they drive endocrine disruption, genotoxicity, and carcinogenicity while regulatory frameworks remain fragmented and insufficient.
Plastics are indispensable in modern society owing to their durability, lightweight properties, and low production costs.However, most plastics are not composed of pure polymers; instead, they contain a wide variety of chemical additives, including plasticizers, bisphenols, flame retardants, stabilizers, per-and polyfluoroalkyl substances (PFAS), pigments, fillers, and processing aids.These additives, which enhance flexibility, stability, and functionality, are not covalently bound to polymer matrices and can leach, volatilize, or migrate throughout the plastic life cycle.Once released, they enter air, water, soils, sediments, food, and living organisms, where they persist or transform into metabolites with equal or greater toxicity.Biomonitoring studies confirm their presence in blood, urine, and breast milk, while environmental surveys reveal their ubiquity in rivers, estuaries, agricultural soils, and indoor environments.Toxicological effects include endocrine disruption, oxidative stress, genotoxicity, reproductive toxicity, and carcinogenicity, with ecological risks such as bioaccumulation and altered species behavior.Regulatory frameworks remain fragmented and often lag behind scientific evidence, while substitution with alternative additives risks regrettable outcomes.This review synthesizes current knowledge on the classification, release pathways, occurrence, toxicological implications, and policy perspectives of plastic additives.It highlights knowledge gaps and underscores the need for coordinated global governance, safer-by-design strategies, and innovative alternatives to safeguard human and ecological health.
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Ecotoxicology of Plastic Additives: Environmental and Health Perspectives
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This review pulls together existing research showing that chemicals added to plastics (like phthalates and flame retardants) can leach out over time and enter our food, air, and water. Once in our bodies, these additives have been linked to hormone disruption, reproductive problems, and even cancer. The authors call for stricter regulations and better recycling to reduce our exposure.
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.
Plastic additives and microplastics as emerging contaminants: Mechanisms and analytical assessment
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Researchers reviewed how chemical additives mixed into plastics during manufacturing — including stabilizers, flame retardants, and plasticizers — can leach out throughout a plastic's lifecycle and pose risks to ecosystems and human health, with microplastics acting as carriers that concentrate and transport these hazardous chemicals.
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.
Plastic and Microplastic Wastes as Environmental Toxicants
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This review covers the environmental accumulation of plastics and microplastics and their toxic chemical additives — including phthalates, flame retardants, bisphenol A, heavy metals, and PCBs — documenting contamination from urban regions to remote ecosystems and food/water supplies.
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