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@article{1128265,
author = {Hanuláková, Dana and Zeman, Josef and Vašíček, Radek and Přikryl, Richard and Kuchovský, Tomáš},
article_number = {80-81},
doi = {http://dx.doi.org/10.1016/j.clay.2013.06.006},
keywords = {Bentonite; Pore water extraction; Mock-Up-Cz experiment; Centrifugation; Leaching},
language = {eng},
issn = {0169-1317},
journal = {Applied Clay Science},
title = {Determination of pore water composition during long term interaction of bentonite substrates with water media: Comparative study},
url = {http://www.sciencedirect.com/science/article/pii/S0169131713001713},
volume = {80-81},
year = {2013}
}
TY - JOUR
ID - 1128265
AU - Hanuláková, Dana - Zeman, Josef - Vašíček, Radek - Přikryl, Richard - Kuchovský, Tomáš
PY - 2013
TI - Determination of pore water composition during long term interaction of bentonite substrates with water media: Comparative study
JF - Applied Clay Science
VL - 80-81
IS - 80-81
SP - 69-75
EP - 69-75
SN - 01691317
KW - Bentonite
KW - Pore water extraction
KW - Mock-Up-Cz experiment
KW - Centrifugation
KW - Leaching
UR - http://www.sciencedirect.com/science/article/pii/S0169131713001713
L2 - http://www.sciencedirect.com/science/article/pii/S0169131713001713
N2 - This paper reports validation results of two frequently used extraction methods centrifugation and leaching for determination of bentonite porewater chemistry. Three types of bentonite materials were used in our study. All the bentonite samples were placed into pressure vessels and interacted with natural water during a one-year experiment. Free water, obtained during these interactions, was used as a comparative pore water composition for both of the extraction methods. Concentrations of Mg2+, Ca2+, K+ and Na+ in water were determined. Centrifugation could be generally considered as a more suitable method because of the smaller differences between free water composition and concentrations obtained from extracted pore water compared to the leaching method. However, actual differences depend on the type of bentonite and on the composition of the water media. In some cases, the leaching method yields better results. Leaching usually leads to higher concentrations of alkali metals and lower concentrations of alkaline earth metals. This indicates that bentonite substrates are sensitive to the change of external conditions and quickly interact with the water media.
ER -
HANULÁKOVÁ, Dana, Josef ZEMAN, Radek VAŠÍČEK, Richard PŘIKRYL a Tomáš KUCHOVSKÝ. Determination of pore water composition during long term interaction of bentonite substrates with water media: Comparative study. \textit{Applied Clay Science}. 2013, roč.~80-81, 80-81, s.~69-75. ISSN~0169-1317. Dostupné z: https://dx.doi.org/10.1016/j.clay.2013.06.006.
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