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Prevalence and characteristics of microplastics present in the street dust collected from Chennai metropolitan city, India
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Researchers assessed microplastic contamination in street dust from 16 locations across Chennai, India, in the first study of its kind from the country. They found an average of about 228 microplastic particles per hundred grams of street dust, with fibers being overwhelmingly the most common type at over 92 percent. The study identifies urban street dust as a significant reservoir and transport medium for microplastic pollution in densely populated cities.
In the present study, we assessed the extent of microplastic pollution in the road dust of Chennai, the fifth largest metropolitan city in India. This study is the first of its kind to be reported from India. Sixteen different locations were selected from which road dust samples were collected. The average microplastic abundance was estimated to be 227.94 ± 91.37 per hundred grams of street dust sample. Nile Red dye was used for microplastic identification and quantification. 92.46% of the quantified microplastics were fragments. Raman spectroscopy of a representative sample identified nine types of polymers viz. polyvinyl chloride, poly(ethylene-co-vinyl-acetate), HDPE, poly(tetrafluoroethylene), cellulose microcrystalline, lyocell, superflex-200, wax-1032, and AC-395. SEM-EDS analysis highlighted the presence of various trace elements pertaining to automobile exhausts. Assessment of microplastic pollution rampant in street dust, especially in coastal cities as Chennai, is a dire need as it pertains to the concerns of human health and escape into the marine environment.
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Evidences of Microplastic in Air and Street Dust: A Case Study of Varanasi City, India
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Researchers measured microplastics in air and street dust samples from multiple sites in Varanasi, India, finding plastic particles in all samples including suspended and settled dust. The study adds to evidence that urban air and dust are important but underappreciated sources of human microplastic exposure.
Microplastic Pollution in the street dust of Delhi: A study on seasonal variations
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Researchers conducted the first comprehensive study of microplastic pollution in street dust across Delhi, India, examining seasonal variations. The study found significant microplastic contamination in urban street dust, with concentrations varying by season, highlighting the extent of atmospheric microplastic pollution in one of the world's most polluted cities.
Microplastic pollution in the street dust of Delhi: a study on seasonal variations
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Researchers collected street dust from four areas of Delhi (industrial, commercial, institutional, landfill) in post-monsoon and summer seasons and quantified microplastics. Concentrations were significantly higher in summer and in commercial/landfill areas, with some sites reaching 116 MPs per 100 g—among the highest reported for urban street dust.
Microplastic Contamination in Urban Environments: Insights from Street Dust Analysis in Jaipur
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Street dust samples from five commercial zones in Jaipur, India revealed microplastic contamination dominated by fibers and fragments, with polymer types including polyester and polypropylene, and higher concentrations in areas with intensive commercial and vehicular activity.
Evidences of microplastics in aerosols and street dust: a case study of Varanasi City, India
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Researchers documented microplastic contamination in both aerosols and street dust across Varanasi, India, finding fragments dominant in street dust and fibers dominant in airborne particles. The study identified common polymer types including polypropylene, polystyrene, and polyethylene, and found that microplastics carried toxic metallic elements like aluminum, cadmium, and magnesium on their surfaces.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.