Health Risk Assessment on Exposure to PM2.5-bound PAHs from an Urban-industrial Area in Rayong City, Thailand

Sawaeng Kawichai; Susira Bootdee

doi:10.3889/oamjms.2022.9977

Authors

Sawaeng Kawichai Research Institute for Health Science, Chiang Mai University, Chiang Mai, Thailand
Susira Bootdee Chemical Industrial Process and Environment Program, Faculty of Science, Energy and Environment, King Mongkut’s University of Technology North Bangkok (Rayong campus), Rayong, Thailand

DOI:

https://doi.org/10.3889/oamjms.2022.9977

Keywords:

Fine particles (PM2.5), Polycyclic aromatic hydrocarbons, Health risk assessment, The incremental lifetime cancer risk

Abstract

BACKGROUND: A city's industrial area's air quality has become a major priority. PM_2.5-bound polycyclic aromatic hydrocarbons (PAHs) are one of the most common pollutants in urban-industrial area, and can be linked to health problems.

AIM: This study aims to 1) investigate PM_2.5 and PAHs emitted from roadside area (RS) and industrial estate (IE) in Rayong city 2) assess the inhalation of PM_2.5 and PAHs on the human health of the age group.

METHODS: PM_2.5-bound PAHs were investigated and thier carcinogenic risk was evalued in this study. PM_2.5samples were collected on quartz filters contained in a mini-volume air sampler and analyzed for PAHs by GC-MS.

RESULTS: The average PM_2.5 concentrations at RS and IE were 43.3±26.8 and 40.4±21.7 µg/m³, while the values of total PAHs in both sites were 1.68±1.53 and 1.34±1.22 ng/m³, respectively. However, it was found that the PM_2.5and PAHs values were not significantly different (p>0.05). The results revealed that the individual lifetime cancer risk (R_ic) of PM_2.5values for children and adults at both sites indicated acceptable cancer risk (10^-6to10^-4). According to the incremental lifetime cancer risk (ILCR) values of PAHs for different age groups, exposure to PAHs in PM_2.5 through the inhalation pathway was a negligible (<10^-6).

CONCLUSION: As a result, the PM_2.5 concentrations have substantial implications for Rayong city’s environmental management and protection, relating to car emissions and coal combustion.

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