Neue Verfahren und Methoden zur Sanierung von Altlasten - am Beispiel der Deponie Georgswerder, Hamburg. T. 10: Schnelle Vor-Ort-Analytik mit einem mobilen Massenspektrometer Schlussbericht

The distribution of organic soil pollutants in hazardous waste sites, such as aromatic, aliphatic, halogenated or polycyclic aromatic hydrocarbons is very inhomogeneous. An effective assessment of a contaminated area requires processing a large number of soil samples. In an effort to minimize time delays due to sample transport and tedious laboratory sample preparation and analysis, new on-site methods were developed on the basis of employing a mobile gaschromatograph-mass-spectrometer (MM1). Analytical data is available within 2-10 min after sampling. A typical throughput is 60 analyses per day. Soil air is sampled on Tenax and analyzed by thermal-desorption-GC-MS. Soil samples can be processed employing either a headspace-method or an acetone-ultrasonication-extraction followed by direct-MS or fast GC-MS-analysis. Limits of detection are some #mu#g/m"3 for soil air and mg/kg for soil analysis. Data quality objectives are met using control samples, frequent instrument calibration and internal standards (surrogates). Seven hazardous waste sites were assessed and comparative laboratory analyses prove the efficiency with which Hamburgs contaminated soils are now routinely examined. (orig.)Available from TIB Hannover: QN 82(10)+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany); Umweltbehoerde, Hamburg (Germany). Amt fuer AltlastensanierungDEGerman