A study of pollutants emission rate load from motor vehicles using department of environment (DOE) and stockholm environment institute (SEI) inventories

Abstract

A research on DOE and SEI inventory has been done in two cities which were Kuala Lumpur and Kuala Terengganu. Both of these cities represent urban and suburban area. To accomplish this study, traffic count on those roads has been taken manually by using traffic count form guide by JKR. DOE inventory used a total number of registered vehicles to determine the emission rate per year, the result can be doubtful because not all registered vehicle used on road. Meanwhile SEI inventory was based on average of total mileage for each type vehicles. The objectives of this study are to determine the emission load for all available pollutant in each inventory and compared those inventories and obtained a new inventory to replace DOE inventory which is currently use in Malaysia. There will only three pollutants which can be compared in those inventories which is PM10, NOx and CO. The raw data for this research was traffic data for each road which determined the emission rate for each pollutant. Both inventories have their own calculation table in Microsoft excel format. Analysis data for this research used SPSS (Statistical Package for Social Science) software to obtained T-test, correlation, regression value, and ANOVA post-hoc. Emission rate for CO was higher in all site sampling either in Kuala Lumpur or Kuala Terengganu which was contributed by both fuel consumption vehicles. Both inventories have significant differences for all site based from T-test and Anova post-Hoc test. Emission factor for PM10 in DOE inventory for petrol vehicles should be changed to get the exact emission rate. Emission rate in urban area using SEI inventory was higher than emission rate in sub urban area.