Journal Pre-proof Nitrate contamination and source apportionment in surface and groundwater in Ghana using dual isotopes (15N and 18O-NO3) and a Bayesian isotope mixing model Abass Gibrilla, Joseph R. Fianko, Samuel Ganyaglo, Dickson Adomako, Geophrey Anornu, Nafisatu Zakaria PII: S0169-7722(19)30324-9 DOI: https://doi.org/10.1016/j.jconhyd.2020.103658 Reference: CONHYD 103658 To appear in: Journal of Contaminant Hydrology Received date: 13 October 2019 Revised date: 8 May 2020 Accepted date: 20 May 2020 Please cite this article as: A. Gibrilla, J.R. Fianko, S. Ganyaglo, et al., Nitrate contamination and source apportionment in surface and groundwater in Ghana using dual isotopes (15N and 18O-NO3) and a Bayesian isotope mixing model, Journal of Contaminant Hydrology (2019), https://doi.org/10.1016/j.jconhyd.2020.103658 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2019 Published by Elsevier.