We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
A review of urban dust pollution in Iranian cities with examples from other parts of the world
AI summary Read the abstract
Researchers reviewed urban dust pollution in Iranian cities, identifying traffic emissions as the dominant source of microplastics, heavy metals, and polycyclic aromatic hydrocarbons, with plastic fibers and granule fragments being the most commonly detected microplastic forms in urban dust.
Urban dust is the primary cause of spreading some contaminants, including potentially toxic elements (PTEs), polycyclic aromatic hydrocarbons (PAHs), and microplastics (MPs), in urban environments. Growth in population, industrial activities, and transport systems are evidently associated with elevated levels of these pollutants found in urban dust and the surrounding environment. These contaminants possess carcinogenic and accumulative characteristics, which can lead to various environmental and health problems. The primary objective of this study is to review recent studies on urban dust pollution in Iranian cities, as well as addressing relevant cases from other areas around the world. Within Iranian urban dusts, Pb, Cu, and Zn were the most polluting elements. The concentrations of Σ16 PAHs also showed a wide range of variation, primarily consisted of four-ring PAHs such as Pyrene, Fluoranthene, and Acenaphthene. The dominant forms of MPs in dust were fibers and granules fragments, with various colors including white-transparent, red, or black. The main sources of pollution in Iranian urban dusts are traffic-related contaminants, such as direct emissions from exhaust and the wearing of brake pads and tires, as well as industrial activities. Since identifying the pollutant sources is critical in the context of pollution mitigation and remediation, potential pollutant sources in urban dust were discussed in this review. Furthermore, some potential directions for future studies have been suggested to develop and implement effective monitoring strategies for contaminants in urban dust.
More Papers Like This
Investigation of microrubbers, microplastics and heavy metals in street dust: a study in Bushehr city, Iran
AI summary Read the abstract
Street dust in Bushehr, Iran was found to contain both microplastics and microrubbers alongside elevated heavy metals, with road traffic identified as the dominant source of contamination. Children and adults face measurable health risks from inhalation and ingestion of this contaminated urban dust, combining microplastic and heavy metal exposures.
Airborne Microplastic Pollution in a Highly Urbanized City: Occurrence, Characteristics, Human Exposure and Potential Risks
AI summary Read the abstract
Airborne microplastic monitoring in Guangzhou found concentrations averaging 2.5 particles/m³, with fiber-form MPs from synthetic textiles dominant and levels highest near high-traffic areas, translating to estimated human inhalation of 4,100–12,180 particles per year. Quantifying inhalation exposure in megacities is a public health priority given emerging evidence that airborne MPs deposit in lung tissue and may drive respiratory inflammation.
Microplastics in industrial and urban areas in South-West Iran
AI summary Read the abstract
Urban and industrial soils in southwest Iran contained up to 347 microplastic particles per 100 grams, with polyester fibers and PP dominant, and residential areas showing the highest contamination levels. Estimated human exposure via soil contact remained below one particle per day, but this baseline data highlights urban soils as underappreciated microplastic exposure pathways for both adults and children.
Assessment of microplastic pollution load in road dust and associated health risk in a semi-arid region of Rajasthan, India
AI summary Read the abstract
Researchers sampled road dust across Jaipur, India, finding moderate to severe microplastic contamination dominated by polyethylene and polypropylene fibers, with children facing higher exposure risk than adults. Roads act as major microplastic reservoirs, and dust can be inhaled or ingested, making urban road pollution a direct human health threat.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.