Document Detail


Occurrence of synthetic musk fragrances in marine mammals and sharks from Japanese coastal waters.
MedLine Citation:
PMID:  15952346     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In this study, the occurrence of the polycyclic musk fragrances HHCB (1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta[g]-2-benzopyran) and AHTN (7-acetyl-1,1,3,4,4,6-hexamethyltetrahydeonaphthalene) in marine mammals and sharks collected from Japanese coastal waters is reported. HHCB was present in the blubbers of all finless porpoises (Neophocaena phocaenoides) analyzed (n = 8), at levels ranging from 13 to 149 ng/g on a wet weight basis. A fetus sample of finless porpoise contained a notable concentration of HHCB (26 ng/g wet wt), suggesting transplacental transfer of this compound. Among 12 tissues and organs of a finless porpoise analyzed, the highest HHCB concentration was found in blubber, followed by kidney. This indicates that HHCB accumulates in lipid-rich tissues in marine mammals, which is similar to the accumulation profiles of persistent organochlorines, such as PCBs and DDTs. In general, the residue levels of AHTN and nitro musks were low or below the detection limits in finless porpoises, implying either less usage in Japan or high metabolic capacity of these compounds in this animal. HHCB was also found in the livers of five hammerhead sharks (Sphrna lewini) from Japanese coastal waters, at concentrations ranging from 16 to 48 ng/g wet wt. Occurrence of HHCB in higher trophic organisms strongly suggests that it is less degradable in the environment and accumulates in the top predators of marine food chains. This is the first report on the accumulation of synthetic musk fragrances in marine mammals and sharks.
Authors:
Haruhiko Nakata
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Environmental science & technology     Volume:  39     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2005 May 
Date Detail:
Created Date:  2005-06-14     Completed Date:  2005-09-12     Revised Date:  2008-03-07    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3430-4     Citation Subset:  IM    
Affiliation:
Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan. nakata@sci.kumamoto-u.ac.jp
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MeSH Terms
Descriptor/Qualifier:
Adipose Tissue / chemistry,  metabolism
Animals
Benzopyrans / analysis*,  metabolism
Dinitrobenzenes / analysis*,  metabolism
Environmental Monitoring
Female
Fetus / chemistry,  metabolism
Fishes / metabolism
Japan
Kidney / chemistry,  metabolism
Liver / chemistry,  metabolism
Male
Maternal-Fetal Exchange
Naphthalenes / analysis*,  metabolism
Perfume
Porpoises / metabolism
Pregnancy
Sharks / metabolism
Skin / chemistry,  metabolism
Tetrahydronaphthalenes
Tissue Distribution
Water Pollutants, Chemical / analysis*,  metabolism
Xylenes / analysis*,  metabolism
Chemical
Reg. No./Substance:
0/Benzopyrans; 0/Dinitrobenzenes; 0/Naphthalenes; 0/Perfume; 0/Tetrahydronaphthalenes; 0/Water Pollutants, Chemical; 0/Xylenes; 1222-05-5/galaxolide; 21145-77-7/acetyl methyl tetramethyl tetralin; 81-14-1/musk ketone; 81-15-2/musk xylene; 83-66-9/musk ambrette (artificial)

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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