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Papers
228 resultsComplex release dynamics of microplastic additives: An interplay of additive degradation and microplastic aging
This study investigated how microplastics release their chemical additives -- including phthalates, bisphenol A, and flame retardants -- into water, especially under UV sunlight. The process is more complicated than simple leaching: sunlight both breaks down the additives and ages the plastic itself, which changes how fast chemicals are released. These findings matter because the toxic additives that leach from microplastics may pose a greater health risk than the plastic particles themselves.
Association of mixed exposure to microplastics with sperm dysfunction: a multi-site study in China
In a study of 113 men across three regions in China, microplastics were detected in all semen and urine samples tested, with eight different plastic types identified. The presence of certain microplastics, particularly PTFE (Teflon), was associated with reduced sperm quality, suggesting that microplastic exposure may pose risks to male fertility.
Low-cost portable microplastic detection system integrating nile red fluorescence staining with YOLOv8-based deep learning
Researchers built a portable, low-cost microplastic detector that uses fluorescent dye and artificial intelligence to identify six types of plastic particles in just 19 seconds at a cost of only $0.10 per test. This affordable technology could make it much easier for communities and researchers to monitor microplastic contamination in water and the environment, which is essential for understanding human exposure levels.
Raman-guided exploration of placental microplastic exposure: Unraveling the polymeric tapestry and assessing developmental implications
Scientists examined placentas from 50 women after delivery and found microplastics in 62% of them, with seven different plastic types identified including Teflon (PTFE), polystyrene, and ABS. While the particles did not appear to affect birth weight, length, or gestational age in this study, their widespread presence in placental tissue confirms that plastic pollution reaches developing babies before birth. More research is needed to understand potential long-term effects.
Human health concerns regarding microplastics in the aquatic environment - From marine to food systems
This review traces the journey of microplastics from marine environments into the human food supply, examining how they contaminate seafood, drinking water, and the food chain. Particles smaller than 150 micrometers can pass through the intestinal wall and reach other organs, where they may cause chronic toxicity including cardiovascular, liver, and brain damage. The authors emphasize that nanoplastics are especially concerning because their small size allows them to penetrate deeper into the body.
Ranking of potential hazards from microplastics polymers in the marine environment
Researchers developed a model to rank which types of microplastic polymers pose the greatest health risk from marine exposure pathways, based on their chemical toxicity when broken down and their particle size. Polyurethane, PVC, and polyacrylonitrile ranked as the most hazardous, while the toxicity of the broken-down chemical components was the single biggest factor in determining risk. This ranking system could help policymakers prioritize which plastic types to regulate first to protect human health.
Association between microplastics in human amniotic fluid and pregnancy outcomes: Detection and characterization using Raman spectroscopy and pyrolysis GC/MS
Using two different detection methods, researchers confirmed the presence of microplastics in the amniotic fluid of pregnant women, finding six types of plastic particles including Teflon, polystyrene, and ABS. While no immediate link to pregnancy complications was found in this study, the confirmed presence of plastics in the fluid surrounding developing babies highlights the need for larger long-term studies.
Microplastics in freshwater: Unveiling sources, fate, and removal strategies
This review of 167 studies examines the sources, distribution, and fate of microplastics in freshwater systems worldwide. Key sources include improperly disposed plastic waste, synthetic fabrics, and personal care products, and these particles act as carriers for heavy metals, pesticides, and antibiotic-resistant bacteria -- collectively posing potential cancer and other health risks through contaminated drinking water and food.
Assessment of microplastic pollution and polymer risk in the sediment compartment of the Limfjord, Denmark
Scientists measured microplastic contamination across a large Danish fjord and found plastic particles at every location sampled, with concentrations up to 4,288 particles per kilogram of sediment. They applied a Polymer Hazard Index showing that certain plastic types like polyacrylonitrile and ABS pose especially high risks. The study estimates the fjord's surface sediments hold thousands of kilograms of microplastics, with potential consequences for the commercial shellfish species living there.
Evaluation of the Viability of 3D Printing in Recycling Polymers
This systematic review explores whether 3D printing technology can help recycle plastic waste, particularly from agriculture. Finding better ways to reuse plastics matters because unrecycled plastic breaks down into microplastics that contaminate soil, water, and eventually the food chain.
Contamination, potential sources, and risk assessment of microplastics in surface waters of two public bathing beaches along the Northern Bay of Bengal
Researchers measured microplastic contamination in surface waters at two popular bathing beaches along the Bay of Bengal in Bangladesh. They found concentrations ranging from 83 to over 305 particles per cubic meter, with the busier commercial beach showing higher pollution levels. The study raises concerns about direct human exposure to microplastics during recreational water activities in coastal areas.
Aging properties of polymer pellets, release of secondary microplastics and additives in the water environment under laboratory-controlled conditions
Scientists tracked how plastic pellets made of ABS, HDPE, and polyamide break down over 20 months in water under controlled conditions, releasing smaller microplastic particles and chemical additives. The degradation rate varied by plastic type, water salinity, and temperature, with recycled plastics releasing more particles than new ones. This research shows how primary microplastics continuously generate even smaller secondary particles and leach chemicals into water over time.
Occurrence, distribution and characteristics of microplastics in gastrointestinal tract and gills of commercial marine fish from Malaysia
Researchers examined 158 commercial marine fish from 16 species in Malaysia and found microplastics in the gastrointestinal tracts and gills of all species studied. Fibers were the most common microplastic type, and the contamination levels varied between sampling locations. The findings add to growing evidence that microplastics are widespread in commercially important fish species, raising questions about the potential for human exposure through seafood consumption.
Quantification, characterization and risk assessment of microplastics from five major estuaries along the northern Bay of Bengal coast
Researchers measured microplastic pollution in five major estuaries along the Bay of Bengal coast in Bangladesh and found contamination at every site, with polyethylene being the most common plastic type. The rivers were classified at the most severe hazard level for microplastic contamination based on the types of polymers found. Since these estuaries supply water and fish to millions of people, the contamination raises concerns about human exposure through drinking water and seafood.
Why Nigeria should ban single-use plastics: Excessive microplastic pollution of the water, sediments and fish species in Osun River, Nigeria
Researchers found extremely high microplastic contamination in Nigeria's Osun River, with up to 22,079 particles per liter of water, the highest level reported globally for any river. Fish from the river contained 407 to 1,692 microplastic particles each, well above levels found in fish from Asia and Europe. Since communities use this river for drinking water and the fish for food, the findings highlight a serious and direct health risk from uncontrolled single-use plastic disposal.
Abundance, characteristics, and ecological risks of microplastics in the riverbed sediments around Dhaka city
Researchers analyzed riverbed sediments around Dhaka, Bangladesh and found medium-level microplastic pollution dominated by polyethylene, polypropylene, and PET from urban and industrial sources. All sampling sites showed pollution levels above baseline, with ecological risk assessments ranging from medium to very high depending on location. The study fills an important data gap on freshwater microplastic contamination in one of the world's most densely populated urban areas.
Toy building bricks as a potential source of microplastics and nanoplastics
Scientists found that plastic building bricks (like LEGO-type toys) release thousands of microplastics and hundreds of thousands of nanoplastics per square millimeter of scratched surface during simulated play. The bricks, made of ABS or polycarbonate plastic, shed particles when pieces are connected and disconnected. This is concerning because children who play with these toys may inhale or accidentally swallow these tiny plastic particles.
Quantifying microplastics in sediments of Jinzhou Bay, China: Characterization and ecological risk with a focus on small sizes
Using advanced laser technology, researchers found that sediments in Jinzhou Bay, China contained roughly twice as many microplastics as traditional visual methods detected, with nearly half of all particles being smaller than 50 micrometers. These tiny particles are the most concerning because they are more easily swallowed by marine organisms and can carry other pollutants. The study highlights that standard detection methods may be seriously underestimating microplastic contamination.
Quantitative assessment of microplastic contamination in muddy shores of Gulf of Khambhat, India
Researchers surveyed 21 muddy shoreline sites along India's Gulf of Khambhat and found microplastic contamination at every location, with fibers and fragments being the most common shapes. Polymer analysis identified polyethylene, polypropylene, and nylon as the dominant types. This study provides baseline data on microplastic pollution in an understudied coastal region that supports fishing communities and marine biodiversity.
Rethinking microplastics as a diverse contaminant suite
Researchers argue that the term microplastics oversimplifies what is actually a hugely diverse class of contaminants varying in size, shape, polymer type, and chemical additives. Treating all microplastics as a single pollutant leads to studies and regulations that may miss critical differences in how various particles behave and affect organisms. The study calls for a more nuanced approach that treats microplastics as a contaminant suite, similar to how pesticides or pharmaceuticals are categorized.
Antimony release from e-waste-derived microplastics in aqueous environments: Effect of plastic properties and environmental factors
Researchers studied how antimony, a toxic element used as a flame retardant in electronics, leaches out of e-waste microplastics into water. They found that smaller particle sizes and UV aging dramatically increased antimony release, with some conditions boosting it by over 600 percent. The study suggests that electronic waste breaking down into microplastics could be a significant and underappreciated source of antimony contamination in aquatic environments.
Immortal Tek Dovermane X: A Technical White Paper on the Metabolic, Legged, Bio-Composite Companion Platform
This white paper describes a conceptual bio-composite robotic companion platform designed to metabolize organic waste rather than rely on conventional batteries. The design philosophy explicitly addresses microplastic pollution by proposing biodegradable structural materials as an alternative to the synthetic polymers used in traditional consumer electronics and robotics.
Immortal Tek Dovermane X: A Technical White Paper on the Metabolic, Legged, Bio-Composite Companion Platform
This white paper describes a conceptual bio-composite robotic companion platform designed to metabolize organic waste rather than rely on conventional batteries. The design philosophy explicitly addresses microplastic pollution by proposing biodegradable structural materials as an alternative to the synthetic polymers used in traditional consumer electronics and robotics.
Spatial Distribution of Microplastics Abundance Along Selected Beaches in Kelantan, Malaysia
Researchers surveyed ten beaches along the Kelantan coast in Malaysia and found over 1,600 microplastic particles, averaging about 5.4 pieces per gram of sediment, with fragments being the most common type. PVC, polypropylene, and polystyrene were the dominant polymer types, and intertidal zones were the most heavily contaminated areas. The study provides important baseline data on microplastic pollution patterns along these Malaysian coastlines, which can help guide future cleanup and prevention efforts.