检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:胡达理 李智义 邓晓舟 彭亮[2] HU Da-li;LI Zhi-yi;DENG Xiao-zhou;PENG Liang(Plant Protection Station of Zhuzhou Agricultural Committee,Zhuzhou 412000,PRC;College of Resources and Environment,Hunan Agricultural University,Changsha 410128,PRC)
机构地区:[1]株洲市农业委员会植保站,湖南株洲412000 [2]湖南农业大学资源环境学院,湖南长沙410128
出 处:《湖南农业科学》2018年第9期51-53,59,共4页Hunan Agricultural Sciences
基 金:国家自然科学基金(41401260);湖南省自然科学基金(2017JJ2112);国家重点研究发展计划(SQ2017YFNC060064)
摘 要:稻田系统对灌溉水中悬浮态镉的吸附是农田灌溉水中重金属净化的主要过程。从稻田结皮中采集水网藻,研究其对不同粒径高岭土载镉悬浊液的去除动力学过程,并结合重金属的分布形态分析,探讨结皮对不同粒径悬浮态镉的去除机制。结果显示:水网藻对离子态镉的富集作用强于胶体态镉,而对胶体态镉的富集量与胶体的粒径呈负相关。可见,进入水体中悬浮物与重金属结合后,能降低其被藻类俘获概率,增加其迁移能力,导致其污染距离增加。The adsorption of suspended cadmium in irrigation water by paddy field system is the main process of purifying heavy metals in farmland irrigation water. The Hydrodictyon reticulatum was collected from paddy feld crust to study the process of removal of cadmium-loaded cadmium suspensions with different particle sizes. Combined with the analysis of the distribution of heavy metals, the removal mechanism of crusts with different sizes of suspended cadmium was investigated. The results showed that the accumulation of ionic cadmium was stronger than that of colloidal cadmium in Hydrodictyon reticulatum, while the concentration of colloidal cadmium was negatively correlated with the particle size of colloids. This experiment showed that the combination of suspended solids and heavy metals in the water body could reduce the probability of capture by algae, increased its migration ability, and increased its pollution distance.
分 类 号:X173[环境科学与工程—环境科学]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.13