Understanding Sources and Composition of Black Carbon and PM2.5 in Urban Environments in East India

Black carbon (BC) and PM2.5 chemical characterizations are crucial for insight into their impact on the health of exposed population. sampling was carried out over selected residential sites Jamshedpur (JSR) Kharagpur (KGP), east India, during winter season. Seven elements (SO42?, Cl?, Na+, NO3?, K+, Ca2+, Mg2+) were analyzed using ion chromatography (IC). also done at two different in JSR KGP to understand its correlation. The ionic species mass concentration order SO42? > Cl? Na+ NO3? K+ Ca2+ Mg2+, whereas KGP, it Mg2+. back-trajectory analysis showed that most air masses study period originated from Indo Gangetic Plain (IGP). Pearson relations BC-PM2.5 indicate a better positive correlation (r = 0.66) compared 0.42). As shown diagnostic ratio analysis, fossil fuel combustion wood burning account 51.51% 36.36% total energy consumption city, respectively. In apportionment origin sources 43.75% 34.37%, This provides first inventory atmospheric particulate-bound concentrations BC profiles middle-east India informs policymakers scientists further studies.