We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
A novel biomass pyrogenic index and its application coupled with black carbon for improving polycyclic aromatic hydrocarbon source identification.
- Authors
Wang, Xiang; Guo, Shuai; Huang, Qi; Zhu, Yaxian; Zhang, Yong
- Abstract
To accurately subdivide the sources of polycyclic aromatic hydrocarbons (PAHs), the composition characteristics of 36 total polycyclic hydrocarbons (T-PAHs; 16 parent PAHs and 20 alkylated PAHs [A-PAHs]) in biomass-residue samples were analyzed. A novel biomass pyrogenic index (BPI) was defined based on A-PAH-fingerprinting differences between biomass-combustion and petroleum sources of PAHs and the sum of the concentrations of pyrene, fluoranthene, benzo[a]anthracene, and alkylated homologs) divided by the ∑value of EPA PAHs with 2–3 rings. BPIs of < 0.5 and > 0.5 indicated that the PAHs originated mainly from biomass combustion and petroleum, respectively. And the ∑targeted A-PAH pairs influencing the BPI/black carbon (BC) ratio was used to identify PAH sources in surface-sediment samples, using 0.5 as the threshold to distinguish between different sources across the strait. The columnar sediments were used to verify the accuracy of two source-identification methods. The results revealed that the main PAH sources changed since 2005, which is highly consistent with those obtained using positive matrix factors and a changing trend in the main types of local energy use. These results highlight the significance of A-PAHs in accurately identifying PAH sources and suggest that applying compositional differences in BC from different sources for PAH-source identification merits further study.
- Subjects
CARBON-black; POLYCYCLIC aromatic hydrocarbons; SOOT; BIOMASS burning; BIOMASS; ENERGY consumption; FLUORANTHENE
- Publication
Environmental Monitoring & Assessment, 2023, Vol 195, Issue 7, p1
- ISSN
0167-6369
- Publication type
Article
- DOI
10.1007/s10661-023-11494-1