College of Basic Sciences, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
Bull Environ Contam Toxicol. 2020 Feb;104(2):259-264. doi: 10.1007/s00128-019-02777-w. Epub 2020 Jan 1.
Soil arsenic (As) pollution has become a global problem. It is urgent to improve the phytoextraction efficiency of soil As. This study found chemical activators (Span 80/SDS and GSH/Span 80/SDS) that can significantly improve the availability of As and the phytoextraction efficiency of As by Pteris vittata L. in As-contaminated soil. Compared with the control, in the soil screening experiment, Span 80/SDS and GSH/Span 80/SDS significantly increased available As in soil by 73.4% and 81.4%, respectively. And in the soil pot experiment, the Span 80/SDS and GSH/Span 80/SDS significantly increased the As concentration in the pinnae of Pteris vittata L. by 53.4% and 41.2%, respectively, and the total As amount extraction by Pteris vittata L. increased significantly by 31.7% and 94.2%, respectively. The results suggest that adding Span 80/SDS and GSH/Span 80/SDS to As-contaminated soil can be considered as an effectively method to improve the efficiency of phytoextraction.
土壤砷（As）污染已成为全球性问题。迫切需要提高土壤 As 的植物提取效率。本研究发现化学活化剂（Span 80/SDS 和 GSH/Span 80/SDS）可显著提高蜈蚣草叶片对 As 的提取效率和土壤中 As 的有效性。与对照相比，在土壤筛选实验中，Span 80/SDS 和 GSH/Span 80/SDS 分别显著增加了土壤中有效 As 含量 73.4%和 81.4%。在土壤盆栽实验中，Span 80/SDS 和 GSH/Span 80/SDS 分别显著增加了蜈蚣草叶片中 As 浓度 53.4%和 41.2%，蜈蚣草总 As 提取量分别显著增加 31.7%和 94.2%。结果表明，向污染土壤中添加 Span 80/SDS 和 GSH/Span 80/SDS 可以被认为是提高植物提取效率的一种有效方法。
