@inproceedings{030c3e7059c7424183abed07afa42473,
title = "Radionuclide retardation in crystalline rock fractures",
abstract = "Transport and retardation of slightly sorbing sodium was studied in Syyry area SY-KR7 mica gneiss and in altered porous tonalite. Experiments were performed using dynamic fracture and crushed rock column methods and the static batch method. Flow conditions in the columns were determined using tritiated water and chloride as non-sorbing tracers. 14C-PMMA method was used to study the pore structure of matrices and the surface areas were determined by B.E.T. method. Sodium was retarded strongly in altered tonalite owing to homogeneously porous matrix structure and the composition of alteration minerals. An agreement between retardation values in batch and crushed rock column experiments as well as in fracture column experiments was good.",
author = "Pirkko H{\"o}ltt{\"a} and Martti Hakanen and Marja Siitari-Kauppi and Aimo Hautoj{\"a}rvi",
year = "1995",
doi = "10.1557/PROC-353-355",
language = "English",
isbn = "978-1-55899-151-4",
series = "Materials Research Society Symposia Proceedings",
publisher = "Materials Research Society",
pages = "355--362",
editor = "Takashi Murakami and Ewing, {Rodney C.}",
booktitle = "Scientific Basis for Nuclear Waste Management XVIII",
address = "United States",
note = "XVIII International Symposium on the Scientific Basis for Nuclear Waste Management ; Conference date: 23-10-1994 Through 27-10-1994",
}