Preliminary Study On Source Apportionment Of Ambient Air In Semarang City Using Cmb Model (Case Study In Pedurungan Site)

Abstract

High concentrations of fine particulate matter currently represent the main air quality problem in Semarang, and in order to develop effective control strategies its necessary to estimate the contributions of different sources to the ambient air quality. The application of receptor models for source apportionment can provide useful insight into this problem. CMB models (US-EPA 2001) was applied to a set of PM10 data collected in Pedurungan monitoring station for Semarang Regional Environmental Impact Control Agency (Bapedalda) urban air quality monitoring. Elements were analyzed using AAS, whereas UV spectrophotometer and turbidimeter were used for cations and anions anaylizing. Refer to the monitoring station data, the average of PM10 concentrations was only 60,42  g/m3 during the field sampling. Based on model calculations, transportations sector dominated this source apportionment contributing for 42% followed by geological material counts for 19%. Secondary aerosols only contributed 24 %, the rest was predicted come from industry and sea aerosols. Unindentified fraction was only 6%.