Trace Metals in Soot and PM_2.5 from Heavy-Fuel-Oil Combustion in a Marine Engine.

ABSTRACT: Heavy fuel oil (HFO) particulate matter (PM) emitted by marine engines is known to contain toxic heavy metals, including vanadium (V) and nickel (Ni). The toxicity of such metals will depend on the their chemical state, size distribution, and mixing state. Using online soot-particle aerosol mass spectrometry (SP-AMS), we quantified the mass of five metals (V, Ni, Fe, Na, and Ba) in HFO-PM soot particles produced by a marine diesel research engine. The in-soot metal concentrations were compared to in-PM_2.5 measurements by inductively coupled plasma-optical emission spectroscopy (ICP-OES). We found that <3% of total PM_2.5 metals was associated with soot particles, which may still be sufficient to influence in-cylinder soot burnout rates. Since these metals were most lik

SUBMITTER: Corbin JC 

PROVIDER: S-EPMC5990929 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature