健康与环境科学系博士生演讲

活动

详细信息

  • Date: 6/12/2018
  • Time: 16:00-17:00
  • Language: ENGLISH
  • Venue: ES123
  • Contact: 18306135966

简介

Tracing the dynamic changes of element profiles by novel soil porewater samplers with ultralow disturbance to soil-water interface

In flooded soils, soil-water interface is the key zone controlling biogeochemical dynamics. Chemical species and concentrations vary greatly at micro- to cm-scales. Techniques able to track these changing element profiles both in space and over time with appropriate resolution are rare. Here, we report a new technique, the Integrated Porewater Injection sampler (IPI sampler), which is designed for soil porewater sampling with minimum disturbance to saturated soil environment. Our results show IPI sampler is a powerful and robust technique in monitoring dynamics of element profile in soil porewater at high spatial resolution (mm level). The method will greatly facilitate studies of elements behaviors in sediments of wetland, rivers, lakes and oceans.

主讲人

Zhao-Feng Yuan