SEMINARIS DE LA FACULTAT DE GEOLOGIA I LINSTITUT DE CINCIES DE LA TERRA JAUME ALMERA

Universitat de Barcelona (UB) i Consell Superior dInvestigacions Cientfiques (CSIC)

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Chlorinated solvents such as tetrachloroethene (PCE) and trichlorethene (TCE) are among the most

commonly detected hazardous organic compounds encountered in groundwater. These compounds

are one of the most ubiquitous and recalcitrant pollutants of groundwater and soil. Compound-

specific isotope analysis (CSIA) is an innovative approach that can provide a unique insight into the

origin and fate of contaminants in the subsurface, including the examination of transformation

mechanisms and degradation pathways of these compounds in the field.

Over the last decade, carbon CSIA has been successfully utilized in assessing various contaminated

sites across the globe. Recent analytical advancements in chlorine and hydrogen CSIA have opened

new possibilities and enabled consultants and researchers to start employing chlorine and hydrogen

CSIA in their case studies. The application of dual element CSIA approach increases the resolution of

the CSIA method and improves the possibility to differentiate between natural and anthropogenic

organic compounds even if biodegradation occurs.