Different-sized aerosols were collected by an Andersen air sampler to observe the detailed morphology of the black carbon (BC) aerosols which were separated chemically from the other accompanying aerosols, using a Scan- ning Electron Microscope equipped with an Energy Dispersive X-ray Spectrometer (SEM-EDX). The results indicate that most BC aerosols are spherical particles of about 50 nm in diameter and with a homogeneous surface. Results also show that these particles aggregate with other aerosols or with themselves to form larger agglomerates in the micrometer range. The shape of these 50-nm BC spherical particles was found to be very similar to that of BC particles released from petroleum-powered vehicular internal combustion engines. These spherical BC particles were shown to be different from the previously reported fullerenes found using Matrix-Assisted Laser Desorption/Ionization Time-Of-Flight Mass Spec- trometry (MALDI-TOF-MS).
CITATION STYLE
Fu, F., Xu, L., Ye, W., Chen, Y., Jiang, M., & Xu, X. (2006). Morphology of black carbon aerosols and ubiquity of 50-nanometer black carbon aerosols in the atmosphere. China Particuology, 4(6), 323–326. https://doi.org/10.1016/s1672-2515(07)60283-8
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