Human health risk assessment of trace elements in PM10 for industrial areas in Gujarat

Seema Nihalani; Namrata Jariwala; Anjali Khambete

doi:10.18502/japh.v8i2.12913

Seema Nihalani Department of Civil Engineering, Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat, India
Namrata Jariwala Department of Civil Engineering, Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat, India
Anjali Khambete Department of Civil Engineering, Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat, India

DOI: https://doi.org/10.18502/japh.v8i2.12913

Keywords: Vapi; Ankleshwar; Risk assessment; Oral reference dose; Inhalation reference concentrations

Abstract

Introduction: The present study examines human exposure to Particulate Matter (PM₁₀) and analyses potential health concerns in the industrial zones of Ankleshwar and Vapi in Gujarat.

Materials and methods: For Ankleshwar and Vapi, 120 samples were collected, and characterisation was carried out to determine the concentration of NO3, SO4, NH3, K-S, Na, EC, OC, Al, Si, Fe, K, Ti, Ni, Br, Ca, Cl, Mn, Pb, Cr, Zn, S, V, and Cu in PM₁₀ mass. The health risk from exposure to different trace elements, including both carcinogenic and non-carcinogenic, is evaluated for three distinct paths of ingestion, inhalation, and skin contact.

Results: The Excess Cancer Risk (ECR) values for Cr and Pb for the ingestion pathway and the carcinogenic risks for Cr, Ni, and Pb for the inhalation pathway are both found to be higher than the minimal permissible threshold (1×10⁻⁶) for both children and adults for Ankleshwar and Vapi. However, for Ankleshwar and Vapi, the carcinogenic risks from dermal exposure to Cr and Pb are found to be lower than the permissible limit for both adults and children. It is observed that non-carcinogenic Hazard Index (HI) values for the skin contact and ingestion routes are less than 1 for both children and adults for Ankleshwar and Vapi. While the HI value for the inhalation pathway is found to be larger than the tolerable limit of 1 for both adults and children.

Conclusion: For the purpose of creating sustainable cities and improving the health of the urban population, this study will provide a fundamental basis and help the governing authorities design mandatory pollution prevention and control methods, restoration plans, and systematic monitoring programmes.