Distribution of Cu fraction in sediments using Suaeda heteroptera - Nereis succinea combination: A greenhouse study |
| |
| Authors: | Jie He Qingzhi Wang Xiaotong He Xu Chen Changfa Liu |
| |
| Affiliation: | 1. Key Laboratory of Nearshore Marine Environmental Science and Technology in Liaoning Province, School of Marine Technology and Environment, Dalian Ocean University, Dalian, PR China;2. Key Laboratory of Marine Bio-resources Restoration and Habitat Reparation in Liaoning Province, School of Fisheries and Life Science, Dalian Ocean University, Dalian, PR China;3. Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian, PR China;4. Key Laboratory of Marine Bio-resources Restoration and Habitat Reparation in Liaoning Province, School of Fisheries and Life Science, Dalian Ocean University, Dalian, PR China |
| |
| Abstract: | A knowledge of the total amount of heavy metals is not enough to assess the environmental impact of polluted soils. Therefore, the determination of Cu fractions in sediment is important to evaluate its behavior in the environment and its mobilization capacity. The distribution of Cu (II) fractions in the sediment was studied in a laboratory simulation experiment. The results indicated that the distribution of Cu fractions was related to the concentration of Cu in sediments. In the Suaeda heteroptera group, the content of exchangeable and carbonate-bound were reducing, while the Fe-Mn oxide- and organic matter-bound were basically raising. In the Nereis succinea group, the content of Fe-Mn oxide- and organic matter-bound were from raising to reducing, and the residual was basically reducing with the increasing Cu concentrations. Generally speaking, the existence of N. succinea could enhance the uptake of Cu in the coastal sediment planted with S. heteroptera. When S. heteroptera and N. succinea in combination, effect of S. heteroptera and N. succinea on Cu fractions in sediments was significantly higher than the two working singly. |
| |
| Keywords: | Suaeda heteroptera Nereis succinea sediment heavy metal |
|
|
