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Total fluorine, extractable organic fluorine, perfluorooctane sulfonate and other related fluorochemicals in liver of Indo-Pacific humpback dolphins (Sousa chinensis) and finless porpoises (Neophocaena phocaenoides) from South China
Centre for Coastal Pollution and Conservation, Department of Biology and Chemistry, City University of Hong Kong, Kowloon Tong, Hong Kong SAR, Hong Kong; National Institute of Advanced Industrial Science and Technology (AIST), Onogawa 16-1, Tsukuba, Ibaraki, Japan.ORCID iD: 0000-0001-6800-5658
National Institute of Advanced Industrial Science and Technology (AIST), Onogawa 16-1, Tsukuba, Ibaraki, Japan.
Centre for Coastal Pollution and Conservation, Department of Biology and Chemistry, City University of Hong Kong, Kowloon Tong, Hong Kong SAR, Hong Kong: National Institute of Advanced Industrial Science and Technology (AIST), Onogawa 16-1, Tsukuba, Ibaraki, Japan.
National Institute of Advanced Industrial Science and Technology (AIST), Onogawa 16-1, Tsukuba, Ibaraki, Japan.
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2009 (English)In: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 157, no 1, 17-23 p.Article in journal (Refereed) Published
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Abstract [en]

The concentrations of 10 PFCs (perfluorinated compounds: PFOS, PFHxS, PFOSA, N-EtFOSA, PFDoDA, PFUnDA, PFDA, PFNA, PFOA, and PFHpA) were measured in liver samples of Indo-Pacific humpback dolphins (Sousa chinensis) (n = 10) and finless porpoises (Neophocaena phocaenoides) (n = 10) stranded in Hong Kong between 2003 and 2007. PFOS was the dominant PFC in the tissues at concentrations ranging at 26-693 ng/g ww in dolphins and 51.3-262 ng/g ww in porpoises. A newly developed combustion ion chromatography for fluorine was applied to measure total fluorine (TF) and extractable organic fluorine (EOF) in these liver samples to understand PFC contamination using the concept of mass balance analysis. Comparisons between the amounts of known PFCs and EOF in the livers showed that a large proportion (∼70%) of the organic fluorine in both species is of unknown origin. These investigations are critical for a comprehensive assessment of the risks of these compounds to humans and other receptors.

Place, publisher, year, edition, pages
Elsevier, 2009. Vol. 157, no 1, 17-23 p.
Keyword [en]
Cetacean; Combustion ion chromatography for fluorine; Liver; Total fluorine; Unidentified organic fluorine
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
URN: urn:nbn:se:oru:diva-50016DOI: 10.1016/j.envpol.2008.08.005ISI: 000261941800003PubMedID: 18805607Scopus ID: 2-s2.0-56449111310OAI: oai:DiVA.org:oru-50016DiVA: diva2:950385
Note

Funding Agency:

Hong Kong Research Grants Council CityU160507

Available from: 2016-07-29 Created: 2016-04-28 Last updated: 2017-10-17Bibliographically approved

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