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Draft Document – German standard methods for the examination of water, waste water and sludge – Jointly determinable substances (group F) – Part 44: Determination of selected heterocyclic aromatic hydrocarbons (NSO heterocycles) in water – Method using gas chromatography and mass spectrometry (GC/MS standard by Deutsches Institut Fur Normung E.V. (German National Standard), 03/01/2016
