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Oral Session 1<\/a> | Monday, October 3, 11:00\u201311:20 | Abstract 568<\/p>\n [\/et_pb_text][et_pb_text admin_label=”Extended abstracts” _builder_version=”4.18.0″ link_font=”||||on||||” header_3_font=”|800||on|||||” header_3_text_color=”#057184″ header_3_font_size=”20px” header_3_line_height=”1.3em” background_size=”initial” background_position=”top_left” background_repeat=”repeat” custom_margin=”7px||2px|||” custom_padding=”||15px|||” use_border_color=”off” global_colors_info=”{}” link_text_color__hover=”#a5a5a5″ link_text_color__hover_enabled=”on|hover”]<\/p>\n [\/et_pb_text][et_pb_text admin_label=”Extended abstracts” _builder_version=”4.18.0″ link_font=”||||on||||” header_3_font=”|800||on|||||” header_3_text_color=”#057184″ header_3_font_size=”20px” header_3_line_height=”1.2em” background_size=”initial” background_position=”top_left” background_repeat=”repeat” custom_margin=”7px|||||” hover_enabled=”0″ use_border_color=”off” global_colors_info=”{}” link_text_color__hover=”#a5a5a5″ link_text_color__hover_enabled=”on|hover” sticky_enabled=”0″]<\/p>\n Annual emissions of soot from maritime traffic to the atmosphere amount to 1.5 milion metric tons. These soot particles, also called Black carbon referring to their optical properties, are emitted during incomplete combustion processes. Black carbon reaches the marine environment where it partially dissolves and contributes to marine dissolved organic matter (DOM). It is now recognized that dissolved Black carbon (DBC) from natural and anthropogenic sources represents a significant and photoreactive fraction of the oceanic DOM pool, affecting carbon fluxes at global scale. Within the framework of the EU MarTERA MATE project, our objective was to develop a new submersible fluorescence sensor for in situ measurments of maritime traffic-derived DBC in marine waters. A joint laboratory study allowed the characterization of optical properties (EEMs\/PARAFAC, UV\/Vis absorption) and molecular compositions (via ultrahigh-resolution mass spectrometry analyses and benzene polycarboxylic acid quantification) of water-soluble fractions of soot from different origins (standard diesel particulate matter, ship soot, urban dust). This study has led to a better understanding of the optical capacity of DBC material, the location of its fluorescence spectral domain within the natural DOM, and the targeting of excitation\/emission wavelength pairs for in situ detection. The construction of the sensor was finalized in August 2021, and a laboratory calibration was followed by a series of in situ measurements along with the collection of seawater samples in the Bay of Marseille in April and May 2022. Our first results show that the DBC sensor is suited to detect maritime traffic-derived soot in marine waters.<\/p>\n *Pauline Martinot<\/a><\/strong>, MIO, 0000-0002-0400-9665<\/p>\n Catherine Guigue<\/a>,\u00a0CNRS, MIO<\/p>\n L\u00e9a Guyomarc’h<\/a>, IRD, MIO<\/p>\n Xavier Mari<\/a>, IRD<\/p>\n Nguyen Hoang Anh Chu<\/a>, USTH<\/p>\n Cam Tu Vu<\/a>, USTH<\/p>\n O. W\u00fcrl<\/a>,\u00a0University of Oldenburg<\/p>\n S. Emig<\/a>,\u00a0University of Oldenburg<\/p>\n Lea Boettcher<\/a>, ICBM, University of Oldenburg<\/p>\n Thi Hong Nhung Dang<\/a>, ICBM, University of Oldenburg<\/p>\n Jutta Niggemann<\/a>, ICBM, University of Oldenburg<\/p>\n Thorsten Dittmar<\/a>, ICBM, University of Oldenburg<\/p>\n Marc Tedetti<\/a>, IRD, MIO<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ custom_padding_last_edited=”on|tablet” _builder_version=”4.14.7″ _module_preset=”default” background_enable_color=”off” background_image=”https:\/\/oceanopticsconference.org\/wp-content\/uploads\/2022\/01\/oo22-banner-bckd.jpg” custom_padding=”0px||11px||false|false” custom_padding_tablet=”0px||11px||false|false” custom_padding_phone=”||27px||false|false” global_module=”2766″ saved_tabs=”all” locked=”off” global_colors_info=”{}”][et_pb_row _builder_version=”4.16″ _module_preset=”default” custom_padding=”0px||8px||false|false” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_social_media_follow use_icon_font_size=”on” icon_font_size=”19px” _builder_version=”4.16″ _module_preset=”default” custom_button=”on” text_orientation=”right” custom_margin=”-10px||11px||false|false” custom_margin_tablet=”-9px||5px||false|false” custom_margin_phone=”-9px||5px||false|false” custom_margin_last_edited=”on|tablet” global_colors_info=”{}” button_text_size__hover_enabled=”on|desktop”][et_pb_social_media_follow_network social_network=”facebook” url=”https:\/\/www.facebook.com\/OceanOpticsConference\/” _builder_version=”4.16″ _module_preset=”default” background_color=”#9b9b9b” background_enable_color=”on” global_colors_info=”{}” background__hover_enabled=”on|hover” background_color__hover=”#0C71C3″ background_enable_color__hover=”on” follow_button=”off” url_new_window=”on”]facebook[\/et_pb_social_media_follow_network][et_pb_social_media_follow_network social_network=”twitter” url=”https:\/\/twitter.com\/OceanOpticsConf” _builder_version=”4.16″ _module_preset=”default” background_color=”#9b9b9b” background_enable_color=”on” global_colors_info=”{}” background__hover_enabled=”on|hover” background_color__hover=”#0C71C3″ background_enable_color__hover=”on” follow_button=”off” url_new_window=”on”]twitter[\/et_pb_social_media_follow_network][\/et_pb_social_media_follow][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_3,1_3,1_3″ use_custom_gutter=”on” gutter_width=”2″ _builder_version=”4.16″ _module_preset=”default” custom_padding=”13px||34px|0px||” global_colors_info=”{}”][et_pb_column type=”1_3″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.16″ _module_preset=”default” header_font_size=”26px” header_2_font=”|||on|||||” header_2_text_align=”center” header_2_text_color=”#FFFFFF” header_2_font_size=”21px” text_orientation=”center” custom_margin=”||5px|||” global_colors_info=”{}”]<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_text_color=”#FFFFFF” link_font=”||||on||||” link_text_color=”#FFFFFF” header_2_text_color=”#FFFFFF” max_width=”300px” module_alignment=”center” custom_margin=”||||false|false” custom_margin_tablet=”||-3px||false|false” custom_margin_phone=”” custom_margin_last_edited=”on|tablet” custom_padding_tablet=”||||false|false” custom_padding_phone=”||32px||false|false” custom_padding_last_edited=”on|phone” global_colors_info=”{}” link_text_color__hover_enabled=”on|hover” link_text_color__hover=”#a8a8a8″]<\/p>\n Sign up to receive email updates to be sure to catch all the meeting news. 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These soot particles, also called Black carbon referring to their optical properties, are emitted […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":""},"_links":{"self":[{"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/pages\/7187"}],"collection":[{"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/comments?post=7187"}],"version-history":[{"count":6,"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/pages\/7187\/revisions"}],"predecessor-version":[{"id":7221,"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/pages\/7187\/revisions\/7221"}],"wp:attachment":[{"href":"https:\/\/oceanopticsconference.org\/wp-json\/wp\/v2\/media?parent=7187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}A new fluorescence sensor for in situ measurements of dissolved black carbon derived from maritime traffic<\/h3>\n
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