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タイトル: Organotin Contaminations in Malaysia
著者: HARINO, Hiroya
ARAI, Takaomi
OHJI, Madoka
ISMAIL, Ahmad Bin
MIYAZAKI, Nobuyuki
キーワード: butyltin phenyltin
Malaysia
concentrations
human risk
発行日: 2008年8月20日
出版者: International Coastal Research Center, Ocean Research Institute, the University of Tokyo
掲載誌情報: Coastal marine science. Vol.32 No.1, 2008.8, pp. 1-8
抄録: The current status of contaminations by organotin (OT) compounds in Malaysia was reviewed. Tributyltin (TBT) in water samples ranged from <1.39ng L<-1> to 115ngL<-1>1. The higher concentrations of TBTs in water samples were observed in mooring facility of pleasure crafts and the Strait of Malacca with heavy shipping traffic. TBT to total butyltin (BT) was dominant species in water samples, suggesting the latest use of TBT. Phenyltin (PT) compounds were not detected in water samples. Tributyltin in sediment samples ranged from <0.3ugkg<-1> dry to 492ugkg<-1> dry. TBT concentrations in sediment samples were high in the Strait of Johor where locates between Malaysia and Singapore. In the case of sediment, the higher percentage of degradation products of TBT was observed among total BTs. The concentrations of triphenyltin (TPT) compounds in sediment ranged from 0.1-34 ugkg<-1> dry. TBT in bivalves and fish also detected at the range of <0.5-299 ugkg<-1>1, 2.4-190 ugkg<-1>1, respectively. TBT concentrations in some biological samples exceeded the tolerable average residue levels (TALR) which calculated from tolerable daily intake (TDI) for TBT. TBT was not detected in biological samples. Most gastropods from Malaysia were caused imposex. Especially, the highest incidence was found in the Southern part of the Strait of Malacca. Geographical distribution of incidence of imposex accorded with that that of concentration of TBT in aquatic environment.
URI: http://hdl.handle.net/2261/20994
ISSN: 13493000
出現カテゴリ:Coastal Marine Science
Coastal Marine Science

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