Problems of sampling and quality assurance

  • Creation of mathematical models for the minimum sample mass required for the evaluation of heterogeneous materials (1999/2000)

  • A mathematical model for the minimum sample mass required for the determination of pollution in broken pieces of glass (2000/2001)

  • Investigations regarding the minimum sample mass required to divide samples of heterogeneous materials into substantially equivalent amounts of material for laboratory analysis (1999)

  • A mathematical model for the composition of samples and the number of composite samples characterising heterogeneous waste heaps in dependence on the amount of material (2002)

    • The model has been applied for the evaluation of the success of remedition of contaminated soil

    • The model has been included in the new German guideline for the sampling of waste materials PN 98 of the LAGA

  • Definition of a statistical criterion quantifying the reproducibility of data sets (1999/2000)

  • Creation of mathematical models quantifiing the risk of determining the metal content in electronic waste using the scheme of sampling and splitting of the Norddeutsche Affinerie AG Hamburg (2002)

  • Statistical evaluation of genetically modified seed (2001)

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