Passivsammler zur Wasseruntersuchung

The topography and motion of contaminant plumes in groundwater may be determined by surveying the three-dimensional distribution of contaminant freights 1] as well as through a period-integral monitoring by contaminant dosimeters 1]. Conventional methods of taking water samples for chemical analysis cannot fulfill any of these requirements. Sorption active passive collectors suitable for corresponding surveys in gaseous phases are unsuitable for examination in aquifers. Passive collectors for the examination of undisturbed aquifers represent the central part of a probing device system developed by the authors for monitoring chemical and hydraulic parameters within all kinds of aquifers. These passive collectors permit both a determination of the relative contaminant freights at deliberate vertical spacing of vertically ordered measuring points, and period-integrating detection of vertical profiles of relative contaminant freights. The easy-to-handle passive collectors are suitable for the collection of organic and inorganic contaminants and may be evaluated by standardized chemical analysis methods. In this way, passive collectors fulfill the essential prerequisites for purpose-oriented monitoring of contaminant plumes. Moreover, passive collectors for ground water monitoring are well suited for the in situ-examination of any other aquifer, both still and fluent, regardless of its depth or extent. Examples of application may be sewage ducts, sewage plants, rivers, lakes, oceans, water samples and especially the identification of contaminants and trace substances.