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A total of 146 bed sediment surface samples were collected at a range of depths in the water column (2-57 m) in the Forth estuary, and 9 samples in North Aberdeenshire. In the Forth estuary, two sampling areas were selected, specifically the inner estuary channel (sites west of longitude -2.9) and the outer estuary channel (sites east of longitude -2.9). OCs and PBCs were analysed using gas chromatography-mass spectrometry (GC-MS). PBDEs were analysed using gas chromatography-tandem mass spectrometry (GC-MS/MS). \n\nThese data were collected as part of the Natural Environment Research Council (NERC) funded project entitled \"Uptake of chemicals from legacy waste sites in coastal food webs and effects on higher predators\" (NERC reference NE/T003596/1).","distributionFormats":[{"name":"Comma-separated values (CSV)","type":"text/csv","version":"unknown"}],"distributorContacts":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"distributor","email":"info@eidc.ac.uk"}],"funding":[{"funderName":"Natural Environment Research Council","funderIdentifier":"https://ror.org/02b5d8509","awardTitle":"Uptake of chemicals from legacy waste sites in coastal food webs and effects on higher predators","awardNumber":"NE/T003596/1","awardURI":"https://gotw.nerc.ac.uk/list_full.asp?pcode=NE%2FT003596%2F1","orcid":false,"ror":true}],"hasOnlineServiceAgreement":true,"id":"475f098c-dcc4-4e77-b57b-8b9bdeb330a3","incomingCitationCount":0,"infoLinks":[{"url":"https://data-package.ceh.ac.uk/sd/475f098c-dcc4-4e77-b57b-8b9bdeb330a3.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"inspireThemes":[{"theme":"Environmental Monitoring Facilities","uri":"http://inspire.ec.europa.eu/theme/ef"}],"keywordsOther":[{"value":"sediment","uri":"http://www.eionet.europa.eu/gemet/concept/7565"},{"value":"estuary","uri":"http://www.eionet.europa.eu/gemet/concept/2974"},{"value":"estuary pollution","uri":"http://www.eionet.europa.eu/gemet/concept/12183"},{"value":"pollution","uri":"http://www.eionet.europa.eu/gemet/concept/6445"},{"value":"polychlorinated biphenyl","uri":"http://www.eionet.europa.eu/gemet/concept/6485"},{"value":"polybrominated biphenyl","uri":"http://www.eionet.europa.eu/gemet/concept/6481"},{"value":"organochlorine compound","uri":"http://www.eionet.europa.eu/gemet/concept/5921"},{"value":"persistent organic pollutant"}],"keywordsTheme":[{"value":"Pollution","uri":"http://onto.nerc.ac.uk/CEHMD/topic/15"},{"value":"Environmental survey","uri":"http://onto.nerc.ac.uk/CEHMD/topic/7"}],"licences":[{"value":"This resource is available under the terms of the Open Government Licence","code":"license","uri":"https://eidc.ac.uk/licences/ogl/plain"}],"lineage":"Samples were collected from the surface of the estuary bed using a 250 cm2 Van Veen grab sampler. Samples were stored in glass containers at -20 °C. Prior to analysis, the sediment samples were delivered to the Analytical Chemistry laboratories at the UK Centre for Ecology & Hydrology (UKCEH) in Lancaster. Sediment samples were analysed for a suite of 35 polychlorinated biphenyls (PCBs; di- to deca-PCBs), 25 polybrominated diphenyl ethers (PBDEs; tri- to octa-PBDE), and 7 organochlorine pesticides (OCs). Analytes were extracted from the sediments using Soxhlet extraction. Sample clean-up was carried out using size-exclusion chromatography and alumina column chromatography. OCs and PBCs were analysed using gas chromatography-mass spectrometry (GC-MS). PBDEs were analysed using gas chromatography-tandem mass spectrometry (GC-MS/MS). Quantification of all analytes was carried out using 13C-labelled internal standards and calibration curves of unlabelled analyte standards. All concentrations were blank-corrected where necessary, and are reported in ng g-1 ww (wet weight).","metadataDate":"2026-06-29T16:15:18","notGEMINI":false,"onlineResources":[{"url":"https://data-package.ceh.ac.uk/data/475f098c-dcc4-4e77-b57b-8b9bdeb330a3","name":"Download the data","description":"Download a copy of this data","function":"download","type":"OTHER"},{"url":"https://data-package.ceh.ac.uk/sd/475f098c-dcc4-4e77-b57b-8b9bdeb330a3.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"pointsOfContact":[{"displayName":"Alex Billings","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"pointOfContact","email":"enquiries@ceh.ac.uk","fullName":"Alex Billings","pointOfContact":"UK Centre for Ecology & Hydrology"}],"publicationDate":"2026-05-29T00:00:00.000Z","publishers":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"}],"resourceIdentifiers":[{"code":"https://catalogue.ceh.ac.uk/id/475f098c-dcc4-4e77-b57b-8b9bdeb330a3"},{"code":"10.5285/475f098c-dcc4-4e77-b57b-8b9bdeb330a3","codeSpace":"doi"}],"resourceType":{"value":"dataset"},"responsibleParties":[{"displayName":"Alex Billings","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"pointOfContact","email":"enquiries@ceh.ac.uk","fullName":"Alex Billings","pointOfContact":"UK Centre for Ecology & Hydrology"},{"familyName":"Billings","givenName":"Alex","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0002-8042-5599","fullName":"Billings, A."},{"familyName":"Daunt","givenName":"Francis","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0003-4638-3388","fullName":"Daunt, F."},{"familyName":"Grant","givenName":"Alanna","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0009-0005-7203-3260","fullName":"Grant, A."},{"familyName":"Olszewska","givenName":"Justyna P.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0002-4910-2206","fullName":"Olszewska, J.P."},{"familyName":"Pickard","givenName":"Amy","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0003-1069-3720","fullName":"Pickard, A."},{"familyName":"Bogdanova","givenName":"Maria I.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","fullName":"Bogdanova, M.I."},{"familyName":"Campbell","givenName":"Helen","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","fullName":"Campbell, H."},{"familyName":"Carter","givenName":"Heather","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","fullName":"Carter, H."},{"familyName":"Pereira","givenName":"M. 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