Managaki Satoshi, Enomoto Iku, Masunaga Shigeki
Graduate School of Environment and Information Sciences, Yokohama National University, 79-7, Yokohama, 240-8501, Japan.
J Environ Monit. 2012 Mar;14(3):901-7. doi: 10.1039/c2em10621c. Epub 2012 Jan 30.
The distribution of hexabromocyclododecane (HBCD) in the sediment of three Japanese rivers with different characteristics (i.e., population and potential source in the catchment) was investigated and compared with the results estimated using a multimedia fate model (ChemCAN). High concentrations of HBCD in sediments in the range of 134-2060 ng g(-1) were found in a river receiving textile wastewater. This contrasted with the much lower concentrations (0.8-4.8 ng g(-1)) observed for an urban river (with a surrounding population of 1.8 million). The medians of observed HBCD concentrations in each river were close to those estimated based on the assumed input source (e.g., 1810 ng g(-1) for the observed median concentration, and 1436 ng g(-1) for the estimation, in the Kuzuryu River). These results demonstrated the importance of considering source contributions of HBCD, including both industrial and consumer sources, to aquatic environments, for reliable risk management.
研究了六溴环十二烷（HBCD）在三条具有不同特征（即流域内的人口和潜在来源）的日本河流沉积物中的分布情况，并与使用多介质归宿模型（ChemCAN）估算的结果进行了比较。在一条接纳纺织废水的河流中，沉积物中HBCD的浓度很高，范围为134 - 2060 ng g⁻¹。这与一条城市河流（周边人口为180万）中观察到的低得多的浓度（0.8 - 4.8 ng g⁻¹）形成对比。每条河流中观察到的HBCD浓度中位数与基于假定输入源估算的中位数接近（例如，在九头龙川，观察到的中位数浓度为1810 ng g⁻¹，估算值为1436 ng g⁻¹）。这些结果表明，为了进行可靠的风险管理，考虑HBCD的来源贡献（包括工业和消费源）对水生环境的影响非常重要。
