吉林大学学报（理学版）Issue(4)：809-816,8.DOI:10.13413/j.cnki.jdxblxb.2015.04.38
p CO2平面光极在生物扰动存在下水/沉积物体系中的应用
Application of a p CO2 Planar Optode in Water/Sediment System with the Presence of Bioturbation
摘要
Abstract
A p CO 2 plane sensing membrane based on TOA+ PTS4- was developed by physical entrapping fluorescent indicator in the inner side and coverring with a permeable silicone layer in the out side.With the aid of camera,the sensor can directly show the variability in the distribution of p CO 2 vertical profile in water/sediment system.The planar fluorosensor was applied to a simulated water/sediment microcosm with the presence of bioturbation.The monitoring results indicate that in the presence of bioturbation,the p CO 2 in the interface of overlying water changed significantly.It goes upward and then becomes stable gradually.Meanwhile,the diffusive boundary layer of surface sediment disappears gradually,the p CO 2 of sediment in middle layer hardly changes,and p CO 2 of sediment at depth increases to a stable level gradually.The changes of p CO 2 in this system is a complex,multidimensional change,and also a dynamic process which is producing and consuming CO 2 .It is the result of the synthetic actions including physical mixing,life activity of tubificid, organic matter mineralization and other mechanism.关键词
生物地球化学/生物扰动/沉积物/p CO2二维分布/p CO2平面荧光传感膜Key words
biogeochemistry/bioturbation/sediment/p CO 2 2-dimensional distributions/p CO 2 planar fluorosensor分类
资源环境引用本文复制引用
李一楠,毛丹,政芳,花修艺,郭志勇,董德明..p CO2平面光极在生物扰动存在下水/沉积物体系中的应用[J].吉林大学学报（理学版）,2015,(4):809-816,8.基金项目
国家自然科学基金(批准号:20607007)、中央高校基本科研业务费专项基金(批准号:201103113)和国家水体污染控制与治理科技重大专项基金(批准号:2012ZX07202-009) （批准号:20607007）
