An Investigation of Particulate Emission Using Chemical Composition Analysis Method

บทคัดย่อ

This study aimed to investigate the source of particulate emission contribution at Na-PhraLan Subdistrict, Chalermphrakiat District, Saraburi Province, Thailand which is surrounded by cement plants and quarries by using the receptor model (Chemical Mass Balance model, CMB 8.2). This model requires data input from emission sources and receptors. The gravimetric and chemical composition of particulate matter (PM10) emissions were analyzed to determine the PM10 source profles. The samples of particulate matter at Na-Phra-Lan Subdistrict, Chalermphrakiat District of three receptors (1) Khung-Khow-Khew village (receptor A) represented industrial area, residential area and heavy traffc area, (2) Na-Phra-Lan village (receptor B) represented industrial area, residential area and heavy traffc area and (3) Ban Nhong-Jan village (receptor C) represented agricultural area using a Minivol Air Samples were collected and analyzed to determine the chemical composition. They were collected on teflon and quartz fber flters for analyzing of elemental composition, water soluble ions and carbon species by using X-ray fluorescence, ion chromatography and organic elemental analysis. The results showed that the signifcant sources contribution at Na-Phra-Lan Subdistrict, Chalermphrakiat District were white cement plants, quarry and crushing plants, portland cement plants, biomass burning, diesel vehicle and motorcycle at 71.87%, 13.62%, 9.72%, 1.84%, 1.22% and 0.15% respectively. Unknown sources were 1.58%. The summary of dominant chemical composition found in Na-Phra-Lan Subdistrict, Chalermphrakiat District, Saraburi Province were Ca, S, Si, Fe, SO+ 4 and Ca2+ at 25.11%, 13.68%, 9.61%, 5.82%, 5.78% and 4.01% respectively. The cement groups found Ca, Si, S and Fe as major chemical components at 58.03%, 18.6%, 13.50% and 3.61% respectively. It can be concluded that cement groups were the major source contributors in the study area.