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Urban River Microplastics as Vectors for Pharmaceutical Contaminants in a Savannah Region (Caatinga Biome)
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This Brazilian study examined a river in the semi-arid Caatinga biome and found that microplastics in the water were co-contaminated with pharmaceutical compounds, driven by discharge of untreated domestic sewage. The work highlights how microplastics can act as carriers of pharmaceutical pollutants, compounding threats to water security in an already vulnerable and understudied region. The authors call for integrated waste management policies and environmental education to address combined chemical threats.
The study investigates the presence of emerging contaminants in a river within a watershed located in the Brazilian semiarid region, specifically within the Caatinga biome, emphasizing the importance of environmental monitoring in areas that have historically been underrepresented in scientific research. The analysis focused on the associations between microplastics and pharmaceutical compounds, demonstrating that the discharge of untreated domestic effluents and the low efficiency of sanitation systems increase water resource contamination and threaten water security. The interdependence between these variables underscores the need for integrated public policies for waste management, complemented by environmental education strategies and technological innovations. The work makes an unprecedented contribution to expanding knowledge about emerging pollutants in semiarid environments, highlighting the urgency of holistic approaches, continuous monitoring, and strengthening environmental governance to ensure the sustainability and resilience of ecosystems like the Caatinga in the face of the challenges posed by global environmental change, urban growth, and those outlined in the Sustainable Development Goals.
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Urban River Microplastics as Vectors for Pharmaceutical Contaminants in a Savannah Region (Caatinga Biome)
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Researchers investigated the association between microplastics and pharmaceutical contaminants in a river within the Caatinga biome of Brazil's semiarid region, focusing on an underrepresented area with limited prior environmental monitoring. They found that microplastics serve as vectors for pharmaceutical compounds, highlighting co-contamination risks in ecologically sensitive but understudied watersheds.
Microplastics in water from the confluence of tropical rivers: Overall review and a case study in Paraiba do Sul River basin
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Researchers surveyed microplastic contamination at river confluences in the Paraiba do Sul River basin, Brazil's most important southeastern watershed serving millions of people. They found microplastics throughout the river system, with higher concentrations near industrial and densely populated areas. Since this river basin supplies drinking water and supports agriculture for a large population, the contamination raises direct concerns about human microplastic exposure.
Micro(nano)plastics as a vector of pharmaceuticals in aquatic ecosystem: Historical review and future trends
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This systematic review examines how microplastics and nanoplastics in water can absorb and carry pharmaceutical drugs, creating a combined pollution threat. When medications attach to tiny plastic particles in rivers and oceans, they may become more harmful to aquatic life and potentially to humans who consume contaminated seafood or water. The research traces how this emerging double-threat has grown since 2018 and identifies key knowledge gaps.
Integrated occurrence of contaminants of emerging concern, including microplastics, in urban and agricultural watersheds in the State of São Paulo, Brazil
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Researchers measured contamination from microplastics and other emerging pollutants in both urban and agricultural watersheds in the Brazilian state of Sao Paulo. They found microplastics in all sampled locations, along with pesticides, caffeine, and other chemicals, with pollution patterns differing between urban and farming areas. The study shows that microplastic contamination is widespread in Brazilian water systems used for drinking and irrigation, contributing to human exposure through multiple pathways.
Review: Microplastic contamination in the Guandu River basin: The water supply reservoir of Rio de Janeiro metropolitan region (Southeastern Brazil) — R1/PR7
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Researchers found microplastic concentrations of 6.1 ± 4.9 particles/m³ in the cold-dry season and 2.3 ± 1.1 particles/m³ in the warm-rainy season in the Guandu River basin of Rio de Janeiro, with polyethylene and polypropylene dominating and higher abundance linked to greater urban land use.
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