... biomarkers potentially determining this type. In the known system of identification of sources of oil sticks on the basis of biomarkers NORDTEST the methodology based on multilevel approach is proposed. At the first level of this methodology the basic information on hydrocarbons and level of their degradation formed by gas chromatograph is presented. At the second level the gas chromatograph is used in regime of monitoring of selected ions for determination of diagnostic relations for polycyclic aromatic ...

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