Terauchi Hidenori, Takahashi Shin, Lam Paul K S, Min Byung-Yoon, Tanabe Shinsuke
Center for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho 2-5, Matsuyama 790-8577, Japan.
Environ Pollut. 2009 Mar;157(3):724-30. doi: 10.1016/j.envpol.2008.11.028. Epub 2008 Dec 24.
In this study we investigated occurrences and distribution patterns of dioxin-related compounds (DRCs) such as polybrominated dibenzo-p-dioxins/dibenzofurans (PBDD/Fs), polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs), monobromo-polychlorinated dibenzo-p-dioxins/dibenzofurans (MoBPCDD/Fs) and dioxin-like polychlorinated biphenyls (DL-PCBs) in marine surface sediments collected from the coastal waters of Hong Kong and Korea. In most sampling sites, concentrations of PCDDs were the highest, followed by DL-PCBs, PCDFs, PBDFs, PBDDs, MoBPCDDs and MoBPCDFs in this order. Levels of PBDD/Fs were generally 1-2 orders of magnitude lower than chlorinated analogues. Levels of PCDDs are higher than PCDFs in Hong Kong while levels of PBDFs are higher than PBDDs in Korea (p<0.05). Report of PBDD/Fs and MoBPCDD/Fs in sediments from East Asian countries is novel and original. Environmental levels of PBDD/Fs are supposed to start increasing in accordance with rising production, use and disposal of brominated flame retardants (BFRs) and recycling processes of e-waste in Asian developing countries.
在本研究中，我们调查了从香港和韩国沿海水域采集的海洋表层沉积物中二噁英相关化合物（DRCs）的发生情况和分布模式，这些化合物包括多溴代二苯并 - 对 - 二噁英/二苯并呋喃（PBDD/Fs）、多氯代二苯并 - 对 - 二噁英/二苯并呋喃（PCDD/Fs）、单溴多氯代二苯并 - 对 - 二噁英/二苯并呋喃（MoBPCDD/Fs）以及二噁英类多氯联苯（DL - PCBs）。在大多数采样点，PCDDs的浓度最高，其次依次是DL - PCBs、PCDFs、PBDFs、PBDDs、MoBPCDDs和MoBPCDFs。PBDD/Fs的含量通常比其氯代类似物低1 - 2个数量级。在香港，PCDDs 的含量高于PCDFs，而在韩国，PBDFs的含量高于PBDDs（p<0.05）。关于东亚国家沉积物中PBDD/Fs和MoBPCDD/Fs的报告具有新颖性和原创性。随着亚洲发展中国家溴化阻燃剂（BFRs）的生产、使用和处置增加以及电子废物回收过程的兴起，PBDD/Fs的环境水平预计将开始上升。
