Health risk assessment of heavy metals in atmospheric deposition in a congested city environment in a developing country: Kandy City, Sri Lanka

Journal of Environmental Management
Lakshika WeerasundaraMeththika Vithanage

Abstract

This research study which was undertaken in a congested city environment in a developing country provides a robust approach for the assessment and management of human health risk associated with atmospheric heavy metals. The case study area was Kandy City, which is the second largest city in Sri Lanka and bears the characteristics of a typical city in the developing world such as the urban footprint, high population density and traffic congestion. Atmospheric deposition samples were collected on a weekly basis and analyzed for nine heavy metals common to urban environments, namely, Al, Cr, Mn, Fe, Ni, Cu, Zn, Cd and Pb. Health risk was assessed using hazard quotient (HQ) and hazard index (HI), while the cancer risk was evaluated based on life time daily cancer risk. Al and Fe were found to be in relatively high concentrations due to the influence of both, natural and anthropogenic sources. High Zn loads were attributed to vehicular emissions and the wide use of Zn coated building materials. Contamination factor and geo-accumulation index showed that currently, Al and Fe are at uncontaminated levels and other metals are in the range of uncontaminated to contaminated levels, but with the potential to exacerbate in the long-term. ...Continue Reading

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Feb 12, 2017·The Science of the Total Environment·Lakshika WeerasundaraMeththika Vithanage

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Citations

Apr 2, 2020·Archives of Environmental & Occupational Health·Nai YangXiaoya Ma
Dec 29, 2020·Environmental Monitoring and Assessment·A B LiyandeniyaN Priyantha
Mar 13, 2021·Environmental Science and Pollution Research International·Abbas TaatiSergi Díez

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