2021
Temporal trends in radiometrically dated sediment cores from English lakes show polybrominated diphenyl ethers correlate with brominated but not mixed bromo/chloro dioxins and furans
PETERS, Leon I.; Neil L. ROSE; Handong YANG; Jana KLÁNOVÁ; Thomas MOEHRING et al.Základní údaje
Originální název
Temporal trends in radiometrically dated sediment cores from English lakes show polybrominated diphenyl ethers correlate with brominated but not mixed bromo/chloro dioxins and furans
Autoři
PETERS, Leon I.; Neil L. ROSE; Handong YANG; Jana KLÁNOVÁ; Thomas MOEHRING a Stuart John HARRAD
Vydání
Science of the Total Environment, Amsterdam, Elsevier Science, 2021, 0048-9697
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10511 Environmental sciences
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 10.754
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/21:00122040
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
PBDD/Fs; PXDD/Fs; PBDEs; Time trends; Sources; Lakes
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 6. 6. 2025 09:37, Mgr. Michaela Hylsová, Ph.D.
Anotace
V originále
This paper reports concentrations between similar to 1950 and present, of polybrominated diphenyl ethers (PBDEs) and polybrominated dibenzo-p-dioxins and furans (PBDD/Fs), in radiometrically-dated sediment cores from three English lakes. Mixed bromo/chloro dibenzo-p-dioxins and furans (PXDD/Fs) were measured in two of the same lakes. Concentrations of PXDD/Fs decreased over time to the present. To our knowledge, this is the first report of temporal trends of PXDD/Fs in the environment. In contrast, concentrations of PBDEs increased towards the present and were significantly correlated (R = 0.88-0.98; p < 0.05) with concentrations of PBDFs in all three lakes. These observations suggest that the sources of PXDD/Fs are not related to PBDEs and differ from those of PBDFs. We also report for the first time the presence of octabromodibenzofuran (OBDF) in the two most recent core slices at one lake. The source of OBDF in these samples is unclear. While OBDF has been reported previously as a significant contaminant of some commercial formulations of Deca-BDE, it is also present in Octa-BDE products and in emissions from a variety of combustion activities. Overall, while the positive correlation between PBDEs and PBDFs suggests increased use of PBDEs has contributed substantially to environmental contamination with PBDFs; examination of PBDF homologue patterns implies emissions from combustion activities are likely also important.
Návaznosti
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