Evaluation of Volatile Organic Compounds Characteristics and Its Health Impact in the Vicinity of Petrochemical Industrial Complez
Measurements of airborne volatile organic compounds (VOCs) were conducted in the vicinity of petrochemical industrial complex in Thailand. Samples were collected using canister and were analyzed by Gas Chromatography/Mass Spectrophotometer (GCMS) following US.EPA TO 15 procedure. Twelve sampling locations were selected taking into account wind directions, receptor locations and distances from potential emission sources. Composite samples taken over a 24-hour period were collected monthly. Concentrations of VOCs were analyzed for a suite of 24 compounds covering both of carcinogenic and non-carcinogenic substances. Results were determined and analyzed in order to evaluate its spatial variability and its potential health risk. Comparison of data from each monitoring sites indicated that patterns of VOCs across sites were difference in its major species and its concentration which might be influenced by nearest potential emission sources. Carcinogenic VOCs such as benzene, 1, 3, butadiene and 1, 2, dichloroethane were found higher than their annual national standards. It was suspected that high concentrations of benzene and 1, 3, butadiene might be attributed by both the mobile source and point source emissions while 1, 2, dichloroethane was suspected to be emitted from factory, located upwind from the monitoring sites. Hazard quotient and hazard indexes were applied to determined chronic health effects with non-cancer endpoints. Calculated values of hazard index for every of target organ systems were lower than 1 which indicated that the non-cancer chronic risk due to level of volatile organic compounds in the study area was less. Analysis of data revealed that benzene was the largest contributor to chronic risk. As cancer risk was concerned, benzene and 1, 2 dichloroethane were determined to exhibit elevated cancer risk in this area.
VOCs air pollution impact potential risk analysis
THEPANONDH Sarawut JARUPAN Varoonphan MAKKASAP Thagoon
Department of Environmental Science,Kasetsart University,Bangkok,Thailand Pollution Control Department,Samsennai,Phayathai,Bangkok,Thailand
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
565-570
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）