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Formation of marine oil snow by soot particles generated from burning of oils.

Authors :
Yin, Fang
Yang, Cheng
Qin, Boyu
Su, Penghao
Feng, Daolun
Yang, Tao
Source :
Marine Pollution Bulletin; Aug2024, Vol. 205, pN.PAG-N.PAG, 1p
Publication Year :
2024

Abstract

This study aims to investigate the interactions between marine oil snow (MOS) formation and soot particles derived from two distinct oils: condensate and heavy oil. Experimental findings demonstrate that the properties of oil droplets and soot particles play a key role in MOS formation. Peak MOS formation is observed within the initial days for condensate, while for heavy oil, peak formation occurs at a later stage. Furthermore, the addition of oils and soot particles influences the final concentrations of polycyclic aromatic hydrocarbons (PAHs) in MOS. Remarkably, the ranking order of PAHs with different rings in various MOS samples remains consistent: 4- > 3- > 5- > 2- > 6-ring. Specific diagnostic ratios such as Phe/Ant, Ant/(Ant + Phe), BaA/(Chr + BaA), and LMW/HMW effectively differentiate petrogenic and pyrogenic sources of PAHs in MOS. And stable ratios like Flu/(Pyr + Flu), InP/(InP + BghiP), and BaF/BkF are identified for source analysis of soot MOS. [Display omitted] • The properties of oil droplets and soot particles influence the MOS formation. • Peak MOS formation by light oil and soot occurs earlier than that of heavy oil. • The order of PAHs with different rings in MOS samples remains consistent. • PAH ratios are explored to demonstrated the source characteristics of soot MOS. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
0025326X
Volume :
205
Database :
Supplemental Index
Journal :
Marine Pollution Bulletin
Publication Type :
Academic Journal
Accession number :
178480083
Full Text :
https://doi.org/10.1016/j.marpolbul.2024.116626