{"refrec":{"BRefID":406629,"RR":"<b>Mil-Homens, M.; Gonçalves, S.; Cortés, A.; van Drooge, B.L.; De Stigter, H.; Grimalt, J.O.; Cordeiro, L.G.; Santos, M.M.; Almeida, C. M. R.; Caetano, M.</b> (2025). Sources and distribution of organic matter and polycyclic aromatic hydrocarbons in sediments of the southwestern Portuguese shelf. <i>Mar. Pollut. Bull. 210</i>: 117303. <a href=\"https://dx.doi.org/10.1016/j.marpolbul.2024.117303\" target=\"_blank\">https://dx.doi.org/10.1016/j.marpolbul.2024.117303</a>","BEntID":404427,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Mar. Pollut. Bull. 210</i>: 117303. <a href=\"https://dx.doi.org/10.1016/j.marpolbul.2024.117303\" target=\"_blank\">https://dx.doi.org/10.1016/j.marpolbul.2024.117303</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Mil-Homens, M.; Gonçalves, S.; Cortés, A.; van Drooge, B.L.; De Stigter, H.; Grimalt, J.O.; Cordeiro, L.G.; Santos, M.M.; Almeida, C. M. R.; Caetano, M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Mil-Homens, M. <i>et al.</i>","Englishabstract":"<span style=\"color:rgb(31,31,31);\">Total organic carbon (C</span><sub>org</sub><span style=\"color:rgb(31,31,31);\">), total nitrogen (N</span><sub>tot</sub><span style=\"color:rgb(31,31,31);\">), C</span><sub>org</sub><span style=\"color:rgb(31,31,31);\">/N</span><sub>tot</sub><span style=\"color:rgb(31,31,31);\">, δ</span><sup>13</sup><span style=\"color:rgb(31,31,31);\">C</span><sub>org</sub><span style=\"color:rgb(31,31,31);\">, δ</span><sup>15</sup><span style=\"color:rgb(31,31,31);\">N, calcium carbonate (CaCO</span><sub>3</sub><span style=\"color:rgb(31,31,31);\">), and grain size were analyzed in 70 surface samples and 19 short cores from the southwestern Portuguese shelf. Perylene and USEPA-16 PAHs were quantified in a subset of these samples. The findings suggest that organic matter derives from a mix of terrestrial and marine sources, outlined by C</span><sub>org</sub><span style=\"color:rgb(31,31,31);\">, N</span><sub>tot</sub><span style=\"color:rgb(31,31,31);\">, and isotopic signatures. Perylene combined with δ</span><sup>13</sup><span style=\"color:rgb(31,31,31);\">C</span><sub>org</sub><span style=\"color:rgb(31,31,31);\"> was used to identify the main PAH sources in these environments. Diagnostic perylene ratios revealed contributions from natural sources in the Tagus region and contaminated materials from the Sado Dredged Disposal Site, with additional perylene in Sines linked to atmospheric deposition of pyrogenic sources. A significant correlation between perylene and USEPA-16 PAHs indicates natural and anthropogenic inputs from the Tagus. This multiproxy approach—combining USEPA-16ΣPAHs, perylene, and δ</span><sup>13</sup><span style=\"color:rgb(31,31,31);\">C</span><sub>org</sub><span style=\"color:rgb(31,31,31);\">—offers insights for assessing environmental risks and guiding marine environmental management according to the MSFD.</span>","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Sources and distribution of organic matter and polycyclic aromatic hydrocarbons in sediments of the southwestern Portuguese shelf","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-10 01:33:00.558799","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"<p style=\"margin-left:0px;\">Marine sediments; Organic matter composition; Stable carbon and nitrogen isotopes; Perylene; USEPA-16SPAHs","OtherDescriptors":null,"Notes":null,"AnaPub":2025,"MonPub":null,"DateUpdate":"2025-04-14","DateCreate":"2025-04-14","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1,"DOI":"10.1016/j.marpolbul.2024.117303"},"refs":null,"anarec":{"AnaID":406629,"PubliDate":2025,"Pagination":"117303","XtraPublOfAnaID":null,"ISBN":null,"Volume":"210","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43520,"SerRR":"Marine Pollution Bulletin. 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