caa a22 4500 465762034 CHVBK 20180323111902.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF00878239 doi (NATIONALLICENCE)springer-10.1007/BF00878239 Chemical mechanisms in the dissolution kinetics of minerals; the aspect of active sites [Elektronische Daten] Dedicated to Werner Stumm for his 65th birthday [Bernhard Wehrli, Erich Wieland, Gerhard Furrer] Mechanistic rate laws for the description of mineral dissolution include (often implicitly) the mole fraction of active surface sites. The amount of active sites is first estimated by dissolution experiments in presence of polyvalent cations which inhibit proton-promoted dissolution. The dissolution reactivities of surface Al centers of several minerals and of comparable dissolved polynuclear Al complexes are determined. This comparison offers a second possibility for the indirect estimation of the concentration range of active surface sites. The coordination geometries of surface Al centers, which are given by the crystal lattice network, are considered to determine the reactivity in dissolution processes. Birkhäuser Verlag, 1990 Weathering nationallicence dissolution nationallicence active sites nationallicence aluminum minerals nationallicence surface complex formation nationallicence surface structure nationallicence Wehrli Bernhard Swiss Federal Institute of Technology, Zurich (ETHZ) and Swiss Federal Institute for Water Resources and Water Pollution Control (EAWAG), CH-8600, Dübendorf, Switzerland aut Wieland Erich Swiss Federal Institute of Technology, Zurich (ETHZ) and Swiss Federal Institute for Water Resources and Water Pollution Control (EAWAG), CH-8600, Dübendorf, Switzerland aut Furrer Gerhard Department of Inorganic Chemistry, University of Bern, Freiestrasse 3, CH-3000, Bern 9, Switzerland aut Aquatic Sciences Birkhäuser-Verlag 52/1(1990-03-01), 3-31 1015-1621 52:1<3 1990 52 27 https://doi.org/10.1007/BF00878239 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00878239 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wehrli Bernhard Swiss Federal Institute of Technology, Zurich (ETHZ) and Swiss Federal Institute for Water Resources and Water Pollution Control (EAWAG), CH-8600, Dübendorf, Switzerland aut NATIONALLICENCE 700 1- Wieland Erich Swiss Federal Institute of Technology, Zurich (ETHZ) and Swiss Federal Institute for Water Resources and Water Pollution Control (EAWAG), CH-8600, Dübendorf, Switzerland aut NATIONALLICENCE 700 1- Furrer Gerhard Department of Inorganic Chemistry, University of Bern, Freiestrasse 3, CH-3000, Bern 9, Switzerland aut NATIONALLICENCE 773 0- Aquatic Sciences Birkhäuser-Verlag 52/1(1990-03-01), 3-31 1015-1621 52:1<3 1990 52 27 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer