Wang De-Gao, Alaee Mehran, Sverko Ed, Li Yi-Fan, Reiner Eric J, Shen Li
Department of Environmental Science and Engineering, Dalian Maritime University, Dalian, P. R. China.
J Environ Monit. 2011 Nov;13(11):3104-10. doi: 10.1039/c1em10241a. Epub 2011 Sep 28.
The concentrations and distributions of some typical chlorinated flame retardants (Dechlorane or Mirex, Dechlorane 602 (Dec 602), Dechlorane 603 (Dec 603), Dechlorane 604 (Dec 604) and Dechlorane Plus (DP)) and brominated FRs (polybrominated diphenyl ethers (PBDEs), pentabromoethylbenzene (PBEB) and 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE)) were analyzed in surficial sediment collected from the Dalian coastal area in northeast China. Dec 603, Dec 604, and BTBPE were below their respective limits of detection (LOD) in all sediment samples, while Dechlorane, Dec 602, DP, Σ13BDE (tri- to hepta-BDEs), BDE 209, and PBEB were identified in the ranges <0.015-39.9 ng g(-1) dry weight (dw), <0.011-0.156 ng g(-1) dw, 0.69-7.00 ng g(-1) dw, 0.017-1.33 ng g(-1) dw, 3.94-103 ng g(-1) dw, and <0.073-1.9 ng g(-1) dw, respectively. Relationships between these chlorinated and brominated FRs were analyzed using Pearson's correlation and principal component analysis (PCA). DP, Dechlorane, Σ13BDE, and BDE 209 showed significantly positive correlation (p<0.05), and these relationships showed excellent agreement with PCA results. The spatial trends for Dechlorane, DP, BDE 209, and Σ13BDE showed that high concentrations were found in the industrial zone and lower concentrations in residential and garden zones. The results imply that these FRs are originating from a common source, and support the view that direct input from the effluent of sewage outlets is a major source of these compounds in Dalian sediment.
对从中国东北大连沿海地区采集的表层沉积物中一些典型的氯化阻燃剂（十氯酮或灭蚁灵、脱氯烷602（Dec 602）、脱氯烷603（Dec 603）、脱氯烷604（Dec 604）和得克隆（DP））以及溴化阻燃剂（多溴二苯醚（PBDEs）、五溴乙苯（PBEB）和1,2-双（2,4,6-三溴苯氧基）乙烷（BTBPE））的浓度和分布进行了分析。所有沉积物样品中的Dec 603、Dec 604和BTBPE均低于各自的检测限（LOD），而十氯酮、Dec 602、DP、Σ13BDE（三至七溴二苯醚）、BDE 209和PBEB的含量分别在<0.015 - 39.9 ng g(-1)干重（dw）、<0.011 - 0.156 ng g(-1) dw、0.69 - 7.00 ng g(-1) dw、0.017 - 1.33 ng g(-1) dw、3.94 - 103 ng g(-1) dw和<0.073 - 1.9 ng g(-1) dw范围内被检测到。使用Pearson相关性分析和主成分分析（PCA）对这些氯化和溴化阻燃剂之间的关系进行了分析。DP、十氯酮、Σ13BDE和BDE 209显示出显著的正相关（p<0.05），并且这些关系与PCA结果显示出极好的一致性。十氯酮、DP、BDE 209和Σ13BDE的空间趋势表明，工业区的浓度较高，而居民区和园区的浓度较低。结果表明，这些阻燃剂来自共同的来源，并支持以下观点：污水排放口废水的直接输入是大连沉积物中这些化合物的主要来源。
