受紧凑型荧光灯制造影响的河流集水区中的汞形态、分布及生物累积
Mercury speciation, distribution, and bioaccumulation in a river catchment impacted by compact fluorescent lamp manufactures.
作者信息
Liang Peng, Feng Xinbin, You Qiongzhi, Zhang Jin, Cao Yucheng, Leung Anna Oi Wah, Wu Shengchun
机构信息
School of Environmental and Resource Sciences, Zhejiang Agricultural and Forest University, Lin'an, Zhejiang Province, 311300, People's Republic of China.
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, People's Republic of China.
出版信息
Environ Sci Pollut Res Int. 2016 Jun;23(11):10903-10910. doi: 10.1007/s11356-016-6229-9. Epub 2016 Feb 22.
The influence from the manufacturing of compact fluorescent lamps (CFL) on mercury (Hg) speciation and distribution in river catchments nearby a typical CFL manufacturing area in China was investigated. Water, sediment, river snail (Procambarus clarkii), and macrophyte (Paspalum distichum L.) samples were collected. Total Hg (THg) and methylmercury (MeHg) concentrations in water ranged from 1.06 to 268 ng · L(-1) and N.D. -2.14 ng · L(-1), respectively. MeHg was significantly positively correlated with THg in water. THg and MeHg in sediment ranged from 15.0 to 2480 and 0.06 to 1.85 ng · g(-1), respectively. River snail samples exhibited high concentrations of THg (206-1437 ng · g(-1)) and MeHg (31.4-404 ng · g(-1)). THg and MeHg concentrations in root of P. distichum L. were significantly higher than those in shoot, indicating that THg and MeHg in the plant were mainly attributed to root assimilation. A very high bioaccumulation factor (20.9 ± 22.1) for MeHg in P. distichum L was noted, suggesting that P. distichum L. might have a potential role in phytoremediating MeHg contaminated soil due to its abnormal uptake capacity to MeHg.
研究了中国某典型紧凑型荧光灯（CFL）制造地区附近河流集水区内CFL制造对汞（Hg）形态及分布的影响。采集了水、沉积物、河螺（克氏原螯虾）和大型植物（双穗雀稗）样本。水中总汞（THg）和甲基汞（MeHg）浓度分别为1.06至268 ng·L⁻¹和未检出至2.14 ng·L⁻¹。水中MeHg与THg显著正相关。沉积物中THg和MeHg含量分别为15.0至2480 ng·g⁻¹和0.06至1.85 ng·g⁻¹。河螺样本中THg（206 - 1437 ng·g⁻¹）和MeHg（31.4 - 404 ng·g⁻¹）浓度较高。双穗雀稗根部的THg和MeHg浓度显著高于地上部分，表明植物中的THg和MeHg主要源于根部吸收。双穗雀稗对MeHg具有非常高的生物累积因子（20.9 ± 22.1），这表明双穗雀稗因其对MeHg的异常吸收能力，可能在植物修复MeHg污染土壤方面具有潜在作用。
Zotero 插件