Perpustakaan Digital ITB

Black Carbon (BC) is a short-lived climate pollutant and major PM2.5 component with significant climate and health impacts, yet BC source-characterization data remain limited in Indonesia, including Bandung — the country's most congested city after Jakarta. This study characterized the mass concentration, atmospheric behavior, and source apportionment of BC in PM2.5 at Institut Teknologi Bandung's Ganesha campus. Fifteen samples were collected over two dry-season months (22 June–21 August 2026) using a MiniVol sampler; PM2.5 was quantified gravimetrically, and BC was analyzed at seven wavelengths using MABI. PM2.5 ranged from 13.101 to 108.963 ?g/m3 (mean 65.569 ± 29.305 ?g/m3), with 67% of samples exceeding Indonesia's national standard (55 ?g/m3) and over 90% exceeding the WHO guideline (15 ?g/m3). BC at 639 nm averaged 17.080 ± 6.463 ?g/m3, contributing 25.90% of PM2.5 mass on average. Wind speed correlated most strongly with both pollutants (r = -0.821 and -0.779), while HYSPLIT trajectories showed air masses arriving mainly via roads and highways. Wavelength-dependent source apportionment attributed 67% of sampling days to fossil-fuel combustion and 33% to biomass burning, confirming traffic-related combustion as the dominant local BC source.