Krisda Chidsanit. Using PRTR database to assess human toxicity and eco-toxicity : a case study on emissions source in Rayong province, Thailand. Master's Degree(Environmental Technology). Mahidol University. Mahidol University Library and Knowledge Center. : Mahidol University, 2019.
Using PRTR database to assess human toxicity and eco-toxicity : a case study on emissions source in Rayong province, Thailand
Abstract:
Thailand's Eastern Seaboard has emerged as the country's industrial hub. Rayong Province is the largest home of the petroleum and petrochemical productions as well as other heavy industries which leads to potential environmental problems. This study aims to apply the USEtox Model and AERMOD Model for evaluating human toxicity and ecological toxicity respectively. Concentrations and dispersions of pollutants are evaluated based on the data achieved from the Pollutant Release and Transfer Registers (PRTR) database of the study area. The database used in this analysis consisted of 107 chemical compounds covering from pesticides, heavy metals, inorganic and organic compounds. Results from the analysis by USEtox indicated that acrylonitrile has the highest potential health impact (1.5E+0 CTUh) followed by paraquat dichloride (1.46E+0 CTUh) and chlorpyrifos (1.17E+0 CTUh). As for environmental toxicity, ametryn is evaluated as the most toxic substance (2.02E+08 CTUe) followed by chlorpyrifos (1.66E+08 CTUe) and paraquat dichloride (2.48E+07 CTUe). It was found that these harmful substances are mainly emitted from agricultural activities. Assessment of atmospheric concentrations and spatial distributions was carried out using the AERMOD dispersion model. Emission data of acrylonitrile acquired from the year 2013 PRTR database in Rayong province. Predicted results indicated that the highest daily (24-hours) and annual concentrations were 8.43 and 3.64 μg/m3, respectively. These highest values were predicted in the Muang Rayong district. This study reveals the necessity to develop the emission data and further evaluate them for potential health and environmental impacts for future sustainable management of the area.