关河口表层沉积物中多环芳烃的分布、来源及生态风险评价。
Distribution, sources and ecological risk assessment of PAHs in surface sediments from Guan River Estuary, China.
机构信息
College of Environment, Hohai University, Nanjing 210098, China; Lianyungang Environmental Monitoring Central Station, Lianyungang 222001, China.
College of Environment, Hohai University, Nanjing 210098, China.
出版信息
Mar Pollut Bull. 2014 Mar 15;80(1-2):52-8. doi: 10.1016/j.marpolbul.2014.01.051. Epub 2014 Feb 7.
The contamination of surface sediments in Guan River Estuary, China, by polycyclic aromatic hydrocarbons (PAHs) has been fully investigated. Total concentrations of 21 PAHs ranged from 90 to 218 ng/g with an average of 132.7 ng/g, which is relatively low in comparison with other estuaries around the world. PAH concentrations appeared to be positively correlated with clay content and negatively correlated with sediment grain size. Source identification implied that the PAHs originated mainly from pyrolytic sources. However, source patterns may be continuously changed to a petrogenic origin due to the heavy ship traffic and continuous discharge of oily sewage in this area. The PAH levels were also compared with international Sediments Quality Guidelines and Sediments Quality Criteria, and the results indicated low negative effects for most individual PAHs. However, toxic effects related to FLO would occur occasionally in most locations in the estuary.
中国灌河口表层沉积物中多环芳烃（PAHs）的污染情况已得到全面调查。21 种多环芳烃的总浓度范围为 90-218ng/g，平均值为 132.7ng/g，与世界其他河口相比相对较低。多环芳烃浓度似乎与粘土含量呈正相关，与沉积物粒径呈负相关。来源识别表明，多环芳烃主要来自热解源。然而，由于该地区船舶交通繁忙，含油污水不断排放，源模式可能会不断向生源转变。还将这些多环芳烃水平与国际沉积物质量指南和沉积物质量标准进行了比较，结果表明，大多数单独的多环芳烃的负面影响较低。然而，在河口的大多数位置，与 FLO 相关的毒性影响偶尔会发生。
Zotero 插件