Articles | Volume 15, issue 4
Research article
24 Feb 2015
Research article |  | 24 Feb 2015

Sources of humic-like substances in the Pearl River Delta, China: positive matrix factorization analysis of PM2.5 major components and source markers

B. Y. Kuang, P. Lin, X. H. H. Huang, and J. Z. Yu


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Saved (final revised paper)

Latest update: 01 Mar 2024
Short summary
Humic-like substances (HULIS), the hydrophobic part of water soluble organic material, account for ~10% of PM2.5 mass in the Pearl River Delta, China. Source analysis using PM2.5 chemical composition data revealed that secondary formation process, biomass burning, and residual oil combustion from shipping as significant sources of HULIS. Vehicle emissions contributed little to HULIS. Primary sources of HULIS appeared to be linked to inefficient combustion.
Final-revised paper