![]() Marchand C, Lallier-Verges E, Allenbach M (2011) Redox conditions and heavy metals distribution in mangrove forests receiving shrimp farm effluents (Teremba bay, New Caledonia). Marchand C, Alberic P, Lallier-Verges E, Baltzer F (2006) Distribution and characteristics of dissolved organic matter in mangrove sediment pore waters along the coastline of French Guiana. Li X, Shen Z, Wai OWH, Li YS (2001) Chemical forms of Pb, Zn and Cu in the sediment profiles of the Pearl River Estuary. Mineralogical Association of Canada, Ottawa, Ontario, Short Course Series, vol 27, pp 367–401 In: Cabri LJ, Vaughan J (eds) Modern approaches to ore and environmental mineralogy. Jambor JL, Blowes DW (1998) Theory and applications of mineralogy in environmental studies of sulfide-bearing mine wastes. Hoang TH, Bang S, Kim KW, Nguyen MH, Dang DM (2010) Arsenic in groundwater and sediment in the Mekong River delta, Vietnam. Accepted for publication in the soil and sediment contamination an International Journal 22(4) ![]() Ho HH, Swennen R, Cappuyns V, Vassilieva E, Neyens G, Rajabali M, Tran TV (2013) Assessment on pollution by heavy metals and arsenic based on surficial and core sediments in the Cam River-mouth, Haiphong province, Vietnam. Hlavay J, Prohaska T, Weisz M, Wenzel WW, Stingeder GJ (2004) Determination of trace elements bound to soils and sediment fractions. A comparison between kinetic and sequential extraction procedures. Gismera MJ, Lacal J, Silva PD, Garcia R, Sevilla MT, Procopio JR (2004) Study of metal fractionation in river sediments. Gao X, Chena S, Long A (2008) Chemical speciation of 12 metals in surface sediments from the northern South China Sea under natural grain size. Geochem Trans 3(10):81–101ĭu Laing G, Rinklebe J, Vandecasteele B, Meers E, Tack FMG (2009) Trace metal behaviour in estuarine and riverine floodplain soils and sediments: a review. J Environ Monit 9:319–328Ĭarroll S, O’Day PA, Esser B, Randall S (2002) Speciation and fate of trace metals in estuarine sediments under reduced and oxidized conditions, Seaplane Lagoon, Alameda Naval Air Station (USA). J Environ Monit 6:434–440Ĭappuyns V, Swennen R (2007) Classification of alluvial soils according to their potential environmental risk: a case study for Belgian catchments. Sci Total Environ 381:263–279Ĭappuyns V, Swennen R (2004) Secondary mobilisation of heavy metals in overbank sediments. Anal Bioanal Chem 376:890–901Ĭanavan RW, Van Cappellen P, Zwolsman JJG, van den Berg GA, Slomp CP (2007) Geochemistry of trace metals in a fresh water sediment: field results and diagenetic modeling. Geochim Cosmochim Acta 70:533–547īaeyens W, Monteny F, Leermakers M, Bouillon S (2003) Evaluation of sequential extractions on dry and wet sediments. Sulphide minerals do not show any control even in the anoxic zone most likely because of the low concentration of sulphur.Īria A, Douglas BK, Gary PC, James AD (2006) Kinetics of sorption and abiotic oxidation of arsenic(III) by aquifer materials. As on goethite, and Mn and Zn on calcite and dolomite). ![]() The dissolved concentrations of trace metals are not only controlled by the precipitation/dissolution of discrete hydroxide/oxide, carbonate and phosphate minerals, but also by sorption processes on major sorbents (i.e. The porewater metal speciation, as predicted by a geochemical model Visual MINTEQ version 3.0, indicates that the toxicity of Cu, Mn, Pb and Zn (presented by the proportions of free metal ions) decreases with depth, while the toxicity of As increases when As(III) becomes more abundant. Sediment-bound Pb and Mn dominate in the reducible and the acid-soluble fraction, respectively, while Cu and Zn distribute rather evenly between four extracted fractions. High porewater concentrations of As, Mn and Pb in oxic and suboxic sediment layers may result in groundwater pollution. ![]() All trace metals show overall decreasing trends with depth in porewater as a result of anthropogenic input in upper sediment layers. The speciation and mobility of some selected trace metals (As, Cu, Mn, Pb and Zn) in sediments with depth was investigated in the Cam River-mouth (Vietnam) by collecting sediment cores and analysing porewater and sediment composition, complemented with single (ammonium-EDTA) and sequential (BCR 3-step) extractions and mineralogical analysis (XRD). ![]()
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