title: Simulating Stable Isotope Ratios in Plumes of Groundwater Pollutants with BIOSCREEN-AT-ISO.
abstract: BIOSCREEN is a well-known simple tool for evaluating the transport of dissolved contaminants in groundwater, ideal for rapid screening and teaching. This work extends the BIOSCREEN model for the calculation of stable isotope ratios in contaminants. A three-dimensional exact solution of the reactive transport from a patch source, accounting for fractionation by first-order decay and/or sorption, is used. The results match those from a previously published isotope model but are much simpler to obtain. Two different isotopes may be computed, and dual isotope plots can be viewed. The dual isotope assessment is a rapidly emerging new approach for identifying process mechanisms in aquifers. Furthermore, deviations of isotope ratios at specific reactive positions with respect to "bulk" ratios in the whole compound can be simulated. This model is named BIOSCREEN-AT-ISO and will be downloadable from the journal homepage.
authors.forename: Patrick
authors.initials: P
authors.lastname: Höhener
authors.affiliation: Laboratoire Chimie Environnement, Aix Marseille University, CNRS UMR 7376, Marseille, F-13331, France.
authors.forename: Zhi M
authors.initials: ZM
authors.lastname: Li
authors.affiliation: EBSI Team, CEISAM, Nantes University, CNRS UMR 6230, Nantes, F-44322, France.
authors.forename: Maxime
authors.initials: M
authors.lastname: Julien
authors.affiliation: EBSI Team, CEISAM, Nantes University, CNRS UMR 6230, Nantes, F-44322, France.
authors.forename: Pierrick
authors.initials: P
authors.lastname: Nun
authors.affiliation: EBSI Team, CEISAM, Nantes University, CNRS UMR 6230, Nantes, F-44322, France.
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Robins
authors.affiliation: EBSI Team, CEISAM, Nantes University, CNRS UMR 6230, Nantes, F-44322, France.
authors.forename: Gérald S
authors.initials: GS
authors.lastname: Remaud
mesh_terms: D002247:Carbon Isotopes; D060587:Groundwater; D007554:Isotopes; D014874:Water Pollutants, Chemical
chemical_list: D002247:Carbon Isotopes; D007554:Isotopes; D014874:Water Pollutants, Chemical