TY - CONF A1 - Lehnik-Habrink, Petra A1 - Mülow-Stollin, Ulrike T1 - Comparison of extraction methods for analysis of OCP and PCB in soils N2 - The determination of organochlorine pesticides (OCP) and polychlorinated biphenyls is challenging because they are strongly physical and chemical bound to soil organic matter. There are various valid standards for the determination of these analytes in soil that differ especially in the extraction method and extraction time. In order to make profound assessments concerning the extraction efficiency seven extraction procedures namely pressurized liquid extraction (PLE), soxhlet and shaking with different extraction times 0.5 h, 1 h, 3 h, 6 h and 16 h were compared. For the study four soils of different total organic carbon (TOC) content were generated from uncontaminated reference soil and compost which were spiked to contaminant levels representative of the Bundes-Bodenschutz-Verordnung. Clean-up and measurement conditions using gas chromatography with mass spectrometry (GC-MS) were kept constant. Statistically analysis of the experimental values showed that recovery rates were not dependent on matrix TOC content. In consideration of measurement uncertainties of 10% - 20% for the determination of OCP and PCB in soil no differences in the efficiency between the tested extraction procedures could be observed. T2 - ISO Meeting CY - Paris, France DA - 24.10.2016 KW - Standardization KW - PCB KW - OCP KW - Extraction methods PY - 2016 AN - OPUS4-38611 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -