PuSH - Publication Server of Helmholtz Zentrum München: Brown and black carbon emitted by a marine engine operated on heavy fuel oil and distillate fuels: Optical properties, size distributions, emission factors.

Navigation

Home

Deutsch

Research

Advanced Search

Browse by ...

... Journal

... Publication Type

... Research Data

... Publication Year

Publication overview

Support & Contact

Contact persons

Help

Data protection

Corbin, J.C.* ; Pieber, S.M.* ; Czech, H.* ; Zanatta, M.* ; Jakobi, G. ; Massabò, D.* ; Orasche, J. ; El Haddad, I.* ; Mensah, A.A.* ; Stengel, B.* ; Drinovec, L.* ; Močnik, G.* ; Zimmermann, R. ; Prévôt, A.S.H.* ; Gysel, M.*

Brown and black carbon emitted by a marine engine operated on heavy fuel oil and distillate fuels: Optical properties, size distributions, emission factors.

J. Geophys. Res. Atmos. 123, 6175-6195 (2018)

Publ. Version/Full Text

Postprint

Research data

DOI

	Open Access Gold (Paid Option)

Abstract
Metrics
Extra information

We characterized the chemical composition and optical properties of particulate matter (PM) emitted by a marine diesel engine operated on heavy fuel oil (HFO), marine gas oil (MGO), and diesel fuel (DF). For all three fuels, ∼80% of submicron PM was organic (and sulfate, for HFO at higher engine loads). Emission factors varied only slightly with engine load. Refractory black carbon (rBC) particles were not thickly coated for any fuel; rBC was therefore externally mixed from organic and sulfate PM. For MGO and DF PM, rBC particles were lognormally distributed in size (mode at d_rBC≈120 nm). For HFO, much larger rBC particles were present. Combining the rBC mass concentrations with in situ absorption measurements yielded an rBC mass absorption coefficient MAC_BC,780nm of 7.8 ± 1.8 m²/g at 780 nm for all three fuels. Using positive deviations of the absorption Ångström exponent (AAE) from unity to define brown carbon (brC), we found that brC absorption was negligible for MGO or DF PM (AAE(370,880 nm)≈1.0 ± 0.1) but typically 50% of total 370‐nm absorption for HFO PM. Even at 590 nm, ∼20 of the total absorption was due to brC. Using absorption at 880 nm as a reference for BC absorption and normalizing to organic PM mass, we obtained a MAC_OM,370nm of 0.4 m²/g at typical operating conditions. Furthermore, we calculated an imaginary refractive index of (0.045 ± 0.025)(λ/370nm)⁻³ for HFO PM at 370 nm>λ > 660 nm, more than twofold greater than previous recommendations. Climate models should account for this substantial brC absorption in HFO PM.

Altmetric

Additional Metrics?

[➜Log in]

Edit extra informations Login

Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords Brown Carbon ; Brc ; Marine ; Black Carbon ; Imaginary Refractive Index ; Shipping; Polycyclic Aromatic-hydrocarbons; Lung Epithelial-cells; Yangtze-river Delta; 6 European Cities; Ambient Air; Oxidative Stress; Mouse Lung; A549 Cells; Cytotoxic Responses; Seasonal-variation

ISSN (print) / ISBN 2169-897X

e-ISSN 2169-8996

Journal Journal of Geophysical Research - Atmospheres

Quellenangaben Volume: 123, Issue: 11, Pages: 6175-6195

Publisher Wiley

Publishing Place Hoboken, NJ

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Cooperation Group Comprehensive Molecular Analytics (CMA)