NO2 and SO2dispersion modeling and relative roles of emission sources over Map Ta Phut industrial area, Thailand

Abstract

90%) except for one residential area where on-road mobile is the largest (75%). For AC-SO2, the petrochemical industry contributes most in all impacted areas (38-56%). For AR-SO2, the results vary. Since the petrochemical industry was often identified as the major contributor despite not being the largest emitter, air quality workers should pay special attention to this emission group when managing air quality for the MA.Implications: Effective air quality management in Map Ta Phut Industrial Area, Thailand requires better understanding of how emissions from various sources contribute to the degradation of ambient air quality. Based on the dispersion study here, petrochemical industry was generally identified as the major contributor to ambient NO2 and SO2. By accounting for all stack and non-stack sources, on-road mobile emissions were found to be important in some particular areas. Supplemental Materials: Supplemental materials are available for this article. Go to the publisher's online edition of the Journal of the Air & Waste Management Association. © 2012 Copyright 2012 A&WMA.