Assessment of arsenic mobility in a shallow aquifer from Bevera Valley Basin (Northern Italy)
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Elevated levels of arsenic (As) have been reported from clay peat and silt aquifer systems in the Bevera Valley Basin, Northern Italy. A sampling survey was carried out on 17 monitoring boreholes completed in the bedrock aquifer. All collected samples were analyzed for major ion concentrations and trace element chemistry. Parameters like pH, temperature, electrical conductivity (EC), dissolved oxygen (DO), and redox potential (Eh) were also measured in situ using digital instruments. Geochemical analyses reveal that groundwater contains high As concentrations, reaching up to 666.5 μg/l, over the Italian threshold (Legislative Decree 152/2006). Then, conventional graphical plots and geochemical modeling techniques were applied to evaluate the geochemistry of As and other trace elements and the mechanisms of their release in groundwater, verifying if high concentrations are due to natural or anthropogenic origin. This study aims to investigate groundwater aquifers in order to define sources and mechanism involved in As release from aquifer sediments and study the relationship with iron (Fe) and manganese (Mn) concentrations.
KeywordsGeogenic Arsenic Groundwater Peat levels Anoxic and reducing conditions Fe and Mn reductive dissolution
The authors would like to express their appreciation to ITALFERR S.p.A. for providing the dataset.
All of the authors contributed extensively to the work. Conceptualization, G.S. and M.B.; methodology, M.B. and F.A.; data curation, F.A. and F.F.; writing and original draft preparation, G.S., M.B., and F.A.; writing and review and editing, F.A. and F.F.; supervision, G.S.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- APHA, AWWA, WEF (2012) Standard methods for examination of water and wastewater, 22nd edn. American Public Health Association, 2012, Washington, pp 1360Google Scholar
- Bhuyan B (2010) A study on arsenic and iron contamination of groundwater in three development blocks of Lakhimpur District, Assam, India. Report and Opinion 2 (6)Google Scholar
- Chandrasekharam D, Joshi A, Chandrasekhar V (2007) Arsenic content in groundwater and soils of Ballia, Uttar Pradesh. Taylor & Francis LtdGoogle Scholar
- Environmental Protection Agency (EPA) (2017) Low stress (low flow) purging and sampling procedure for the collection of groundwater samples from monitoring wells. EQASOP-GW4. https://www.epa.gov/quality/low-stress-low-flow-purging-and-sampling-procedure-collection-groundwater-samples-monitoring. Accessed 30 Jan 2019
- Ergul S, Ferranti F, Sappa G (2013) Arsenic in the aquifer systems of Viterbo Region, Central Italy: distribution and geochemistry. Rend Online Soc Geol Ital 24:116–118Google Scholar
- Farooq SH, Chandrasekharam D (2015) Surface generated organic matter: an important driver for arsenic mobilization in Bengal Delta Plain. In: Safe and sustainable use of arsenic-contaminated aquifers in the Gangetic Plain (pp. 179–196). Springer, Cham. DOI https://doi.org/10.1007/978-3-319-16124-2_12 CrossRefGoogle Scholar
- Farooq SH, Chandrasekharam D, Abbt-Braun G, Berner Z, Norra S, Stueben D (2012) Dissolved organic carbon from the traditional jute processing technique and its potential influence on arsenic enrichment in the Bengal Delta. Appl Geochem 27(1):292–303. https://doi.org/10.1016/j.apgeochem.2011.09.006 CrossRefGoogle Scholar
- Mahanta C, Choudhury R, Basu S, Hemani R, Dutta A, Pratim Barua P, Jyoti Borah P, Bhattacharya M, Bhattacharya K, Alam W, Saikia, L, Mukherjee A, Bhattacharya P (2015) Preliminary assessment of arsenic distribution in Brahmaputra River Basin of India based on examination of 56,180 public groundwater wells. In: Ramanathan A, Johnston S, Mukherjee A, Nath B (eds) Safe and sustainable use of arsenic-contaminated aquifers in the Gangetic Plain. Springer, Cham. https://doi.org/10.1007/978-3-319-16124-2_4 CrossRefGoogle Scholar
- Mukherjee AB, Bhattacharya P, Jacks G, Banerjee DM, Ramanathan AL, Mahanta C, …, Naidu R (2006) Groundwater arsenic contamination in India: extent and severityGoogle Scholar
- Novarese V (1939) Note Illustrative della Carta geologica d’Italia. Foglio n. 31 (Varese), Servizio Geologico d’ItaliaGoogle Scholar
- Orombelli G (1983) Il Pleistocene superiore in Italia: i depositi glaciali. Geogr Fis Din Quat 6:179–180Google Scholar
- Rotiroti M, Bonomi T, Fumagalli M, Azzoni A, Pisaroni B, Demicheli G (2012) Origine e dinamica della contaminazione da ferro, Manganese, Arsenico ed ammonio in acque sotterranee superficiali, il caso di Cremona. Engineering, Hydro, Environmental Geology 14(B):205–206Google Scholar
- Sappa G, Ergul S, Ferranti F (2014a) Water quality control in public supply springs and wells of Viterbo area, Central Italy. SGEM 1(3):845–856Google Scholar
- Smedley PL (2008) Sources and distribution of arsenic in groundwater and aquifers. In Appelo CAJ (ed) Arsenic in groundwater: a world problem. Proceedings of an IAH Seminar, Utrecht, November 2006, pp. 4–32.Google Scholar
- Sø HU, Postma D, Vi M, Pha TKT, Kazmierczak J, Dao VN, Pi K, Koch CB, Pham HV, Jakobsen R (2018) Arsenic in Holocene aquifers of the Red River floodplain, Vietnam: effects of sediment-water interactions, sediment burial age and groundwater residence time. Geochim Cosmochim Acta 225:192–209. https://doi.org/10.1016/j.gca.2018.01.010 CrossRefGoogle Scholar
- Soliani L (2007) Test non parametrici per correlazione, concordanza, regressione monotonica e regressione lineare. In Manuale di Statistica per la Ricerca e la Professione. http://www.sixsigmain.it/ebook/Capu21-1.html. Accessed 24 Jan 2019
- Uggeri A (2014) Comune di Varese. Studio relativo alla componente geologica, idrogeologica e sismica del piano di governo del territorio (P.G.T.) ai sensi della L.R. 12/2005 e secondo i criteri della D.G.R. n. IX/2616/2011Google Scholar
- World Health Organization (WHO) (2001) Environmental health criteria 224: arsenic and arsenic compounds. https://www.who.int/ipcs/publications/ehc/ehc_224/en/. Accessed 15 Jan 2019
- Zanchi A, Rigamonti I, Felber M, Bini A (1983) Analisi strutturale dei depositi Plio-Quaternari del Mendrisotto. Il Quaternario 8(2):279–290Google Scholar