Spatial Assessment of Air Pollution Ezposure and Its Potential Risk
Spatial variability of ambient nitrogen dioxide (NO2) concentration in Rayong province, Thailand was analyzed by GIS-based technique. Annual concentrations of nitrogen dioxide were predicted and were spatially interpolated using various interpolation techniques (i.e. kriging, IDW and spline). Sensitivity analysis was carried out to assure the accuracy of the predicted results. The GIS-based exposure map was simulated and was assisted to identify high exposure areas. Health risk warning system was set for “action (exceeds 100% of annual average NO2 guideline), for “alert (between 66-100% of annual average NO2 guideline) and for “some concern (between 33-66% of annual average NO2 guideline). Although no areas were exposed to action level (greater than 21 ppb), many locations in the study area could be of some concern levels. Potential risk to the population was analyzed by spatial interpolation of nitrogen dioxide concentration with population data. Result indicated number of people exposed to air pollution as well as area having high risk to air pollution. The study indicated application of GIS-based prediction for evaluation of exposure mapping in order to determine the spatial extent and frequency of areas where pollution levels exceed target values, and their potential heath impacts.
nitrogen diozide air pollution ezposure GIS
SARUTICHART Panukorn THEPANONDH Sarawut MAKKASAP Thagoon
Department of Environmental Science,Kasetsart University,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
600-606
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）