Herrero Ferran, JofrePuigserver Cuerda, DianaParker, B. L.Carmona Pérez, José Ma. (José María)2021-02-222022-01-212021-01-211069-3629https://hdl.handle.net/2445/174130A new method for the extraction of chlorinated solvents (CSs) from porewater with dimethylacetamide (DMA) used as a solvent and the determination of δ13C by gas chromatography-isotope ratio mass spectrometry (GC-IRMS) with solid-phase microextraction (SPME) are presented. This method was used for the determination of δ13C of chloroethenes and chloromethanes. The extraction of the CSs from porewater with DMA led to a minimal loss of mass of solvent and chlorinated compounds. The accuracy of the method was verified with the analysis of the pure injected compounds using elemental analyser - isotope ratio mass spectrometry (EA-IRMS). It has been effectively applied in a study area in saturated soil samples of a pollutant source zone of perchloroethylene (PCE) and trichloroethylene (TCE). The limit of quantification of the new method was 0.034 µg/g for PCE and TCE for 10-20 g of soil sample. This new method allows for compound-specific isotope analysis (CSIA) of CSs in porewater, which can be beneficial in sites where the identification of contamination sources and the behaviour of the contaminants are not clear.19 p.application/pdfeng(c) National Ground Water Association, 2021Isòtops de carboniHidrogeologiaHidrologia d'aigües subterràniesClorCarbon isotopesHydrogeologyGroundwater hydrologyChlorineinfo:eu-repo/semantics/article7065082021-02-22info:eu-repo/semantics/openAccess