Identification of transport processes in bioirrigated muddy sediments by [18F]fluoride PET (Positron Emission Tomography)
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- 作者：Andrea Roskosch ; Jö ; rg Lew ; owski ; Ralf Bergmann ; Florian Wilke ; Winfried Brenner ; Ralph Buchert
- 关键词：Bioirrigation ; Chironomus plumosus ; Sediment ; Transport processes ; Advection ; Positron Emission Tomography ; [18F]fluoride
- 刊名：Applied Radiation and Isotopes
- 出版年：2010
- 出版时间：June 2010
- 年：2010
- 卷：68
- 期：6
- 页码：1094-1097
- 全文大小：212 K
文摘
In aquatic environments transport processes across the sediment–water interface are intensified by bioirrigating macrozoobenthos. Transport processes caused by Chironomus plumosus larvae dwelling in U-tubes were investigated by dynamic small animal Positron Emission Tomography (PET) with [18F]fluoride. Significant tracer transport from the burrows into the sediment was detected; penetration was deeper at the outlet branch of the burrow than at the inlet branch. Hence, advection plays a significant role in exchange between water in the burrows and muddy sediment.