Heavy metal pollution of street dust in the largest city of Mexico, sources and health risk assessment

In large industrialized cities, tons of particles containing heavy metals are released into the environment and accumulate on street surfaces. Such particles cause a potential risk to human health due to their composition and size. The heavy metal contamination levels, main emission sources, and hum...

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Published in:Environmental monitoring and assessment 2021-03, Vol.193 (4), p.193, Article 193
Main Authors: Aguilera, Anahi, Bautista, Francisco, Gutiérrez-Ruiz, Margarita, Ceniceros-Gómez, Agueda E., Cejudo, Rubén, Goguitchaichvili, Avto
Format: Article
Language:English
Subjects:
Acid digestion
Atmospheric particulates
Atmospheric Protection/Air Quality Control/Air Pollution
Child
China
Chromium
Cities
Contamination
Copper
Dust
Dust - analysis
Dust storms
Earth and Environmental Science
Ecology
Ecotoxicology
Emissions
Environment
Environmental Management
Environmental Monitoring
Environmental science
Health risk assessment
Health risks
Heavy metals
Humans
Lead
Metal concentrations
Metals
Metals, Heavy - analysis
Mexico
Monitoring/Environmental Analysis
Pollutant load
Pollution
Pollution index
Pollution load
Public policy
Risk Assessment
Zinc
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creator Aguilera, Anahi
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description In large industrialized cities, tons of particles containing heavy metals are released into the environment and accumulate on street surfaces. Such particles cause a potential risk to human health due to their composition and size. The heavy metal contamination levels, main emission sources, and human health risks were identified in 482 samples of street dust. Heavy metal concentrations were obtained by microwave-assisted acid digestion and ICP-OES. The results indicated that street dust in Mexico City is contaminated mainly with Pb, Zn, and Cu, according to the contamination factor and the geoaccumulation index. The pollution load index of the street dust was made with the concentrations of Pb, Zn, Cu, Cr, and Ni. The main sources of Pb, Zn, Cu, and Cr are anthropic, probably due to vehicular traffic. The highest levels of Cr and Pb in urban dust represent a health risk for children. Contamination limits were proposed for heavy metals in street dust of Mexico City. These limits might be useful to generate and apply public policies to decrease anthropic emissions of the heavy metals studied, particularly Cr and Pb.
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source ABI/INFORM Global; Springer Link
subjects Acid digestion
Atmospheric particulates
Atmospheric Protection/Air Quality Control/Air Pollution
Child
China
Chromium
Cities
Contamination
Copper
Dust
Dust - analysis
Dust storms
Earth and Environmental Science
Ecology
Ecotoxicology
Emissions
Environment
Environmental Management
Environmental Monitoring
Environmental science
Health risk assessment
Health risks
Heavy metals
Humans
Lead
Metal concentrations
Metals
Metals, Heavy - analysis
Mexico
Monitoring/Environmental Analysis
Pollutant load
Pollution
Pollution index
Pollution load
Public policy
Risk Assessment
Zinc
title Heavy metal pollution of street dust in the largest city of Mexico, sources and health risk assessment
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