Health Risk Assessment of Volatile Organic Compounds in a High Risk Group Surrounding Map Ta Phut Industrial Estate, Rayong Province
Pannawadee Singkaew MS*, Pornpimol Kongtip PhD*, Witaya Yoosook PhD*, Suttinun Chantanakul MD*
Affiliation : * Department of Occupational Health and Safety, Faculty of Public Health, Mahidol University, Thailand Center of Excellence on Environmental Health, Toxicology and Management of Chemicals (ETM), Bangkok, Thailand
Objective : The health risks of a high-risk group, surrounding Map Ta Phut industrial estate, Rayong, which may be exposed
to VOCs through inhalation of contaminated air and dermal contact of contaminated water were assessed.
Material and Method: The health risk was assessed for 19 subjects categorized as children, adult and elderly from Ban plong
and Nong fab communities following the US Environmental Protection Agency (EPA) method. The VOC concentrations in
ambient air and ground water were monitored by Pollution Control Department (PCD), Ministry of Natural Resources and
Environment to represent average VOC exposure of subjects.
Results : The lifetime cancer risk of VOCs exposure from inhalation and dermal contact with ground water were 1.32x10-7-
5.21x10-6 for elderly, 1.18x10-7-6.20x10-6 for adult and 8.93x10-7-5.93x10-6 for children. For non-cancer risk, the hazard
index was 0.44 for elderly, 0.38-0.42 for adult and 0.55 for children.
Conclusion : The lifetime cancer risk of the high-risk group living near Map Ta Phut industrial estate was in acceptable range
for elderly, adult and children. For non-cancer risk, it is also acceptable.
Keywords : Ambient air, Groundwater, Health risk assessment, Volatile organic compounds
