@article{fdi:010091151, title = {{O}ptical characterization of black carbon-derived {DOM} : implication for the fluorescence detection of fuel combustion products in marine waters}, author = {{M}artinot, {P}. {L}. and {G}uigue, {C}atherine and {G}uyomarc'h, {L}. and {M}ari, {X}avier and {C}hu, {N}. {H}. {A}. and {V}u, {C}. {T}. and {B}oettcher, {L}. and {D}ang, {T}. {H}. {N}. and {N}iggemann, {J}. and {D}ittmar, {T}. and {T}edetti, {M}arc}, editor = {}, language = {{ENG}}, abstract = {{A}mong pollutants released from shipping, black carbon ({BC}), also known as soot carbon, is of great interest due to its impacts on climate, air quality, human health and ecosystems. {BC} emitted from ships may enter marine waters and partially transfer to the seawater dissolved phase. {I}n this study, we investigated the optical properties (absorbance and fluorescence) of dissolved organic matter ({DOM}) derived from {BC} particles ({DOMBC}) emitted by ships, which were compared to those of {DOMBC} of other origins (diesel-powered industrial machine, biomass burning, urban dust), and to terrestrial and marine {DOM} ({DOMTER}, {DOMMAR}). {S}hip and diesel {DOMBC} displayed higher ratios of fluorescence maximum intensity to dissolved organic carbon concentration ({F}max/{DOC}), higher specific {UV} absorbance at 254 nm ({SUVA}254), and lower fluorescence emission wavelengths than the other tested materials. {T}he parallel factor analysis ({PARAFAC})-derived fluorophores of the ship and diesel {DOMBC} exhibited significant correlations with the concentration of dissolved black carbon ({DBC}), determined using the benzenepolycarboxylic acid ({BPCA}) method. {B}ased on these results, we propose the {C}ombustion inde{X} ({COX}), to help detecting and tracking ship/fuel combustion pollutions in marine waters.}, keywords = {{B}lack carbon ; {S}hip soot ; {D}issolved organic matter ; {F}luorescence ; {D}issolved black carbon ; {H}umic substances}, booktitle = {}, journal = {{M}arine {C}hemistry}, volume = {265}, numero = {}, pages = {104432 [13 ]}, ISSN = {0304-4203}, year = {2024}, DOI = {10.1016/j.marchem.2024.104432}, URL = {https://www.documentation.ird.fr/hor/fdi:010091151}, }