Determination and interpretation of environmental water samples contaminated by uranium mining activities |
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Authors: | G. Meinrath P. Volke C. Helling E. G. Dudel B. J. Merkel |
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Affiliation: | (1) Institute of Geology, Department of Hydrogeology, TU Bergakademie Freiberg, G. Zeuner-Strasse 12, D-09596 Freiberg, Germany, DE;(2) Institute of Inorganic Chemistry, TU Bergakademie Freiberg, Leipziger Strasse 29, D-09596 Freiberg, Germany, DE;(3) Institute of Ecology and Environmental Protection, TU Dresden, D-01735 Tharandt, Germany, DE |
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Abstract: | Interpretation of environmental behavior of uranium is based on several steps of data analysis and statistical inference. First step is sampling and analyzing of uranium in field samples by routine laboratory methods. Such methods have to fulfill multiple requirements like robustness, efficiency, low detection limit and precision. A comparison of different approaches in assigning uncertainty to experimentally obtained analytical data shows that classical error estimation is not significantly inferior to more sophisticated modern techniques like inverse regression or orthogonal regression. A second step is the correlation of analytical data with current state of insight into environmental behavior of uranium. Such a correlation furthers the choice of adequate geochemical models and quality of geochemical data base for subsequent detailed analysis, e.g. by geochemical modeling. An appraisal of the individual steps in this complex analysis is given on the basis of statistical procedures for calibration and an EH-pH diagram of uranium for atmospheric conditions. Received: 30 July 1998 / Revised: 18 November 1998 / Accepted: 26 November 1998 |
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