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s/pbdes/PBDE/gi

LP20120815

This research campaign was carried out on vessel / platform: RV Ludwig Prandtl. Information on the campaign: Prandtl. The campaign was carried out in the context of the following project(s): PACESI. The data of this campaign is partially published at https://doi.org/10.1594/PANGAEA.880374, https://doi.org/10.1594/PANGAEA.877302

LP20130527

This research campaign was carried out on vessel / platform: RV Ludwig Prandtl. Information on the campaign: Prandtl. The campaign was carried out in the context of the following project(s): PACESI. The data of this campaign is partially published at https://doi.org/10.1594/PANGAEA.880374, https://doi.org/10.1594/PANGAEA.877302

AWIPEV2009

This research campaign was carried out on vessel / platform: unknown. Information on the campaign: Sampling along the length of Kongsfjorden. The campaign was carried out in the context of the following project(s): KOP141

HE395

This research campaign was carried out on vessel / platform: RV Heincke. Information on the campaign: http://seadata.bsh.de/Cgi-csr/retrieve_dod/viewReport.pl?csrref=20130198. The campaign was carried out in the context of the following project(s): NOAH. The data of this campaign is partially published at https://doi.org/10.1594/PANGAEA.875181, https://doi.org/10.1594/PANGAEA.941156, https://doi.org/10.1594/PANGAEA.859761, https://doi.org/10.1594/PANGAEA.836424, https://doi.org/10.1594/PANGAEA.880374

NLWKN

This research campaign was carried out on vessel / platform: from land / without research vessel. Information on the campaign: Sampling from land. The campaign was carried out in the context of the following project(s): Unknown. The data of this campaign is partially published at https://doi.org/10.1594/PANGAEA.880374

CSEMP

This research campaign was carried out on vessel / platform: RV Cefas Endeavour. Information on the campaign: RV Cefas Endeavour. The campaign was carried out in the context of the following project(s): Unknown. The data of this campaign is partially published at https://doi.org/10.1594/PANGAEA.880374

HE391

This research campaign was carried out on vessel / platform: RV Heincke. Information on the campaign: http://seadata.bsh.de/Cgi-csr/retrieve_dod/viewReport.pl?csrref=20120420. The campaign was carried out in the context of the following project(s): NOAH;COSYNA. The data of this campaign is partially published at https://doi.org/10.1594/PANGAEA.880374

CE17013

This research campaign was carried out on vessel / platform: RV Celtic Explorer. Information on the campaign: Research vessel: Celtic Explorer, Campaign objective: NOAH-Synthesis. The campaign was carried out in the context of the following project(s): NOAH. The data of this campaign is partially published at https://doi.org/10.1594/PANGAEA.944390

Bundesweite Hintergrundwerte für per- und polyfluorierte Chemikalien (PFC) und weitere Schadstoffe in Böden

Eine wesentliche Grundlage für die Festlegung von Bodenwerten in der Bundes-Bodenschutz- und Altlastenverordnung (BBodSchV) sind Kenntnisse der Hintergrundbelastung von Schadstoffen in Böden. Für die Kennzeichnung der Hintergrund-belastung werden repräsentative, statistisch abgeleitete Werte für den allgemein verbreiteten Stoffgehalt in Böden (sogenannte Hintergrundwerte, HGW) herangezogen. Dringend benötigt werden bundesweite HGW für Gesamt- und Eluatgehalte von per- und polyfluorierten Chemikalien (PFAS) in landwirtschaftlich genutzten Böden. Darüber ist eine Untersuchung erforderlich, ob für folgenden und weitere chemische Verbindungen bodenrechtliche Regelungen erforderlich sind: Polybromierte Diphenylether (PBDE), Decabromdiphenylethan (BDPE-209), Hexabromcyclododecan (HBCDD), Tributylzinn-Verbindungen (TBT), Nonylphenole (NP), Diethylhexylphthalat (DEHP), Bisphenol A (BPA), Siloxane. Ziel des Forschungsprojekts ist eine chemische Analyse (Gesamt- und Eluatgehalte) des bundesweiten Vorkommens von PFAS in Böden sowie eine Priorisierung von weiteren o.g. organischen Verbindungen, für die in nachfolgenden Forschungsprojekten eine Ableitung von bundesweiten HGW angestrebt werden sollte. Gegenstand der Untersuchungen sind die im Forschungsprojekt FKZ 3720 72 288 0 (Vorläuferprojekt) bundesweit zu entnehmenden 600 Bodenproben von landwirtschaftlich genutzten Oberböden (400 Acker- und 200 Grünlandproben). Die Analyse der Gehalte von organischen Verbindungen in diesen Proben soll wie nachfolgend benannt vorgenommen werden: (1) Bestimmung der Gehalte von PFAS (Gesamt- und Eluatgehalte) in 600 aktuellen Bodenproben und (2) Bestimmung der Gehalte von PBDE, BDPE-209, HBCDD, TBT, NP, DEHP, BPA, Siloxane und weiteren ausgewählten Chemikalien in 50 aktuellen (aus den Jahren 2021-2024) und 50 Rückstellproben (aus den Jahren 2009-2012).

(Table 1) Concentration of PCB and other contaminants in blood plasma of polar bears (Ursus maritimus) from Svalbard

<p>Persistent chemicals accumulate in the arctic environment due to their chemical reactivity and physicochemical properties and polychlorinated biphenyls (PCBs) are the most concentrated pollutant class in polar bears (Ursus maritimus). Metabolism of PCB and polybrominated biphenyl ether (PBDE) flame-retardants alter their toxicological properties and these metabolites are known to interfere with the binding of thyroid hormone (TH) to transthyretin (TTR) in rodents and humans. In polar bear plasma samples no binding of [125I]-T4 to TTR was observed after incubation and PAGE separation. Incubation of the plasma samples with [14C]-4-OH-CB107, a compound with a higher binding affinity to TTR than the endogenous ligand T4 resulted in competitive binding as proven by the appearance of a radio labeled TTR peak in the gel. Plasma incubation with T4 up to 1 mM, a concentration that is not physiologically relevant anymore did not result in any visible competition. These results give evidence that the binding sites on TTR for T4 in wild living polar bears are completely saturated. Such saturation of binding sites can explain observed lowered levels of THs and could lead to contaminant transport into the developing fetus.</p>

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