Hydrocarbon concentrations in organic carbon and aggregates of surface sediments from the Portuguese continental margin

PCB and PCN were concentrated onto precombusted Whatman GF/F glass filters and determined by AIMES GmbH using two-dimensional gas chromatography-isotope ratio mass spectrometry, after Horii et al (2005): Congener-specific carbon isotopic analysis of technical PCB and PCN mixtures using two-dimensional gas chromatography-isotope ratio mass spectrometry.Environ Sci Technol. 2005 Jun 1;39:4206-12.