+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Hexabromocyclododecane in white-sided dolphins: temporal trend and stereoisomer distribution in tissues

, : Hexabromocyclododecane in white-sided dolphins: temporal trend and stereoisomer distribution in tissues. Environmental Science & Technology 42(7): 2650-2655

Hexabromocyclododecane (HBCD) is a brominated flame retardant used primarily in expanded polystyrene foams and other styrene resins. Samples of blubber (n = 57) and liver (n = 16) from Atlantic white-sided dolphins, Lagenorhynchus acutus, that stranded on the eastern coast of United States between 1993 and 2004 were obtained from the National Marine Mammal Tissue Bank (NMMTB). Blubber samples from most of these animals (n = 47) were previously analyzed for polybrominated diphenyl ethers (PBDE), polychlorinated biphenyls (PCB), and several toxaphene congeners. The three most abundant diastereomers in the technical HBCD mixture (alpha-HBCD, beta-HBCD, and gamma-HBCD) and their enantiomers were determined using liquid chromatography-triple quadrupole mass spectrometry (LC-MS/MS). alpha-HBCD was found in all blubber and liver samples while beta-HBCD and gamma-HBCD were not detected in any samples. The alpha-HBCD concentration in blubber and liver ranged from 14 ng/g wet mass (19 ng/g lipid) to 280 ng/g wet mass (380 ng/g lipid) and 0.051 ng/g wet mass (2.9 ng/g lipid) to 3.6 ng/g wet mass (140 ng/g lipid), respectively. Concentrations of alpha-HBCD were 2 to 3 orders of magnitude lower than previously reported PBDE, PCB, and toxaphene concentrations in these same animals. There was not a significant temporal trend for these compounds in white-sided dolphin blubber. The enantiomeric fractions (EF) measured in blubber and liver were not statistically different and ranged from 0.34 to 0.53. Blubber El's were significantly correlated with both alpha-HBCD concentrations and white-sided dolphin body length. In general, concentrations of HBCDs were lower in these white-sided dolphins than in cetaceans from Western Europe.


PMID: 18505011

DOI: 10.1021/es072052v

Other references

Haines, D.E.; Mcrury, I.D.; Mitchell, M.A., 1997: Effects of linear atrial ablations on spatial organization of fibrillating atria. Circulation 96(8 SUPPL ): I259, 10/21/97

Ahrens, D.; Sabatinelli, G., 1996: Revision of the genus Nepaloserica Frey (Coleoptera, Melolonthidae). The present paper concerns with the species of Nepaloserica including the description of 15 new species from the Himalayas: N. vignai n. sp., N. baehri n. sp., N. schmidti n. sp., N. migliaccioi n. sp., N. helambuensis n.sp., N. bruschii n sp., N....

Berthelin, B.; Zucca, J.; Mescle, J.F.ancois, 1985: Selection et analyse de mutants thermotolerants de Zymomonas mobilis, producteurs d'ethanol. Canadian Journal of Microbiology 31: 4-7

Sisodia, S.S.; Weber, A.S.; Jensen, J.N., 1996: Continuous culture biodegradation of simazine's chemical oxidation products. Experimental studies were conducted to assess the continuous culture biodegradation of s-triazines which originate from the chemical oxidation of simazine, a herbicide found widely in surface and groundwaters. The four s-triazines selected for stu...

Liebenson, C.; Yeomans, S., 1997: Outcomes assessment in musculoskeletal medicine. SUMMARY. Outcomes management is important for quality assurance purposes. Issues of reliability and validity are central to determining appropriate outcomes tools. Outcomes can be used to measure progress in three critical areas of patient managem...

Park, E.R.; Chang, Y.; Quinn, V.; Regan, S.; Cohen, L.; Viguera, A.; Psaros, C.; Ross, K.; Rigotti, N., 2009: The association of depressive, anxiety, and stress symptoms and postpartum relapse to smoking: a longitudinal study. The aim of this prospective repeated measures, mixed-methods observational study was to assess whether depressive, anxiety, and stress symptoms are associated with postpartum relapse to smoking. A total of 65 women who smoked prior to pregnancy an...

Constant, F.; Morali, A.; Arnaud, M.J.; Thirion, A.M.; Matisse, N.; Wagner, M.; Dohm, J.P.; Vuillemin, J.L.; Gay, G., 1999: Treatment of primary constipation in the infant Comparative randomized study of two mineral waters. Archives de Pediatrie 6(SUPPL 2): 553s

Attewell P.B.; Sandford M.R., 1971: On an energy criterion of failure for intrinsically anisotropic rock. Pages (unpaginated 1971

Hang, A.; Franckowiak, J.D., 1984: Cytological analysis of an Elymus canadensis (times) Secale cereale hybrid. The Journal of Heredity 75: 5-6

Alhabdan, S.; Zamakhshary, M.; AlNaimi, M.; Mandora, H.; Alhamdan, M.; Al-Bedah, K.; Al-Enazi, S.; Al-Habib, A., 2013: Epidemiology of traumatic head injury in children and adolescents in a major trauma center in Saudi Arabia: implications for injury prevention. Injury to the head is the most common affected body part in pediatric trauma and could be associated with deleterious consequences. It presents a challenge for developing countries since many injuries are preventable and there are few epidemiologi...