Document Detail

Time trends of perfluorinated compounds from the sediment core of Tokyo Bay, Japan (1950s-2004).
MedLine Citation:
PMID:  19883962     Owner:  NLM     Status:  MEDLINE    
Perfluorinated compounds (PFCs) were detected in sediment core samples collected in Tokyo Bay to reveal their time trends. The core sample deposited during 1950s-2004 was divided into two- to three-year intervals and the concentrations of 24 types of PFCs were determined. Perfluorooctane sulfonate (PFOS) decreased gradually from the early 1990s and its precursor decreased rapidly in the late 1990s, whereas perfluorooctanoic acid (PFOA) increased rapidly. The observed trends were regarded as a reflection of the shift from perfluorooctyl sulfonyl fluoride (PFOSF)-based products to telomer-based products after the phaseout of PFOSF-based products in 2001. The branched isomers of perfluoroundecanoic acid (PFUnDA) and perfluorotridecanoic acid (PFTrDA) were detected in the sample with its ratio of linear-isomer/branched-isomer concentrations decreasing. In this study, we revealed that the sediment core can serve as a tool for reconstructing the past pollution trend of PFCs and can provide interesting evidence concerning their environmental dynamics and time trend.
Yasuyuki Zushi; Masafumi Tamada; Yutaka Kanai; Shigeki Masunaga
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-11-02
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  158     ISSN:  1873-6424     ISO Abbreviation:  Environ. Pollut.     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-02-01     Completed Date:  2010-04-26     Revised Date:  2011-10-13    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  England    
Other Details:
Languages:  eng     Pagination:  756-63     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2009 Elsevier Ltd. All rights reserved.
Graduate School of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan.
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MeSH Terms
Alkanesulfonic Acids / analysis*
Environmental Monitoring*
Fluorocarbons / analysis*
Geologic Sediments / analysis*
Octanoic Acids / analysis*
Time Factors
Water Pollutants, Chemical / analysis*
Reg. No./Substance:
0/Alkanesulfonic Acids; 0/Fluorocarbons; 0/Octanoic Acids; 0/Water Pollutants, Chemical; 1763-23-1/perfluorooctane sulfonic acid; 335-67-1/perfluorooctanoic acid
Erratum In:
Environ Pollut. 2011 Oct;159(10):3142

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