caa a22 4500 465761984 CHVBK 20180323111901.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF00878242 doi (NATIONALLICENCE)springer-10.1007/BF00878242 Interaction of trace metals with natural particle surfaces: Comparison between adsorption experiments and field measurements [Elektronische Daten] Dedicated to Werner Stumm for his 65th birthday [Beat Müller, Laura Sigg] The distribution of the metal ions Zn and Pb between particulate and dissolved phase in river Glatt was studied by field measurements and compared with calculated simulations, using parameters obtained by adsorption experiments with natural suspended particulate material. Differences in distribution coefficients obtained from field data are observed in function of the sampling locations and of the composition of the particulate matter. Experiments in which metal ion solutions are titrated with a suspension of natural particles and analyzed by anodic stripping voltammetry, are interpreted in terms of binding capacities and conditional stability constants of Zn and Pb with the surface sites. Binding constants of a particular metal ion varied very little for all samples. We obtained mean values for the conditional average complex formation constants at pH 8 of: logcond K Pb = 9.44 ± 0.18 and logcond K Zn = 8.17 ± 0.20. At this pH, binding capacities of 5 ⋅ 10−3 - 1.7 ⋅ 10−2 mol/kg of particles were obtained for samples collected at different locations and times; organic material, iron and manganese oxides are considered to be the main components that control the adsorption to the particles. Distribution coefficients are calculated from the experimentally obtained binding capacities and conditional stability constants. Calculated distribution coefficients for Zn agree with those obtained from the field data and are not very sensitive to changes in the composition of the solution. Good agreement was obtained for lead as well; for some samples it was important to take two types of sites with different affinity into consideration. Birkhäuser Verlag, 1990 Trace metals nationallicence zinc nationallicence lead nationallicence adsorption nationallicence surface complexation nationallicence field study nationallicence Müller Beat Swiss Federal Institute of Technology Zurich (ETHZ), CH-8600, Dübendorf, Switzerland aut Sigg Laura Swiss Federal Institute of Technology Zurich (ETHZ), CH-8600, Dübendorf, Switzerland aut Aquatic Sciences Birkhäuser-Verlag 52/1(1990-03-01), 75-92 1015-1621 52:1<75 1990 52 27 https://doi.org/10.1007/BF00878242 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00878242 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Müller Beat Swiss Federal Institute of Technology Zurich (ETHZ), CH-8600, Dübendorf, Switzerland aut NATIONALLICENCE 700 1- Sigg Laura Swiss Federal Institute of Technology Zurich (ETHZ), CH-8600, Dübendorf, Switzerland aut NATIONALLICENCE 773 0- Aquatic Sciences Birkhäuser-Verlag 52/1(1990-03-01), 75-92 1015-1621 52:1<75 1990 52 27 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer