Potential release of selected trace elements (As, Cd, Cu, Mn, Pb and Zn) from sediments in Cam River-mouth (Vietnam) under influence of pH and oxidation.
作者： Huu Hieu Ho , Rudy Swennen , Valérie Cappuyns , Elvira Vassilieva , Tom Van Gerven
DOI: 10.1016/J.SCITOTENV.2012.07.048
关键词:
摘要: Abstract Since contaminated river-bed sediments in the Cam River-mouth (Vietnam) are regularly dredged and disposed on land, an understanding of influence time, pH oxidation leaching behavior heavy metals (Cd, Cu, Mn, Pb Zn) arsenic is necessary for management these materials. A 96 h stat -leaching test to examine elements at pre-set values (2, 4, 6, 8 (natural), 9 11) a BCR 3-step extraction clarify element fractionation, were performed freshly-collected wet suboxic sediment dry oxidized sediment. All display V-shaped pH-dependent pattern with important releases pHs 2 11. At investigated values, release As, Zn from slower lower if compared while opposite trend found Cd Cu 2–8. The transfer acid-soluble (exchangeable carbonate-bound) fraction reducible (Fe Mn hydr/oxide-bound) consistent leachability 2–8 4–8 after oxidation, oxidizable (organic matter sulfide-bound) relates higher all alkaline 9–11 due leached concentration organic Sulfides only play minor role controlling arsenic.
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sci-hub.se 参考文章(26)
Maria Belli, Damiano Centioli, Chiara Galas, Stefania Gaudino, Rob N. J. Comans, Leaching tests: useful tools for the risk assessment of contaminated sediments. Annali dell'Istituto Superiore di Sanità. ,vol. 44, pp. 252- 257 ,(2008)
Ulrich Förstner, Wolfgang Calmano, Michael Kersten, Jihua Hong, Effects of redox variations on metal speciation : implications on sediment quality criteria assessment ,(1994) , 10.15480/882.453
Ulrich Förstner, Wolfgang Calmano, Jihua Hong, Binding and Mobilization of Heavy Metals in Contaminated Sediments Affected by pH and Redox Potential Water Science and Technology. ,vol. 28, pp. 223- 235 ,(1993) , 10.15480/882.450
Gerhardt Rauret, JF López-Sánchez, A Sahuquillo, R Rubio, C Davidson, A Ure, Ph Quevauviller, None, Improvement of the BCR three step sequential extraction procedure prior to the certification of new sediment and soil reference materials Journal of Environmental Monitoring. ,vol. 1, pp. 57- 61 ,(1999) , 10.1039/A807854H
Jeffrey R. Bacon, Christine M. Davidson, Is there a future for sequential chemical extraction Analyst. ,vol. 133, pp. 25- 46 ,(2008) , 10.1039/B711896A
O.W.J.J. Callewaert, M.G. Verloo, F.M. Tack, Metal solubility as a function of pH in a contaminated, dredged sediment affected by oxidation. Environmental Pollution. ,vol. 91, pp. 199- 208 ,(1996) , 10.1016/0269-7491(95)00049-6
Valérie Cappuyns, Rudy Swennen, Anne Devivier, Dredged River Sediments: Potential Chemical Time Bombs? a Case Study Water Air and Soil Pollution. ,vol. 171, pp. 49- 66 ,(2006) , 10.1007/S11270-005-9012-Y
G. Du Laing, J. Rinklebe, B. Vandecasteele, E. Meers, F.M.G. Tack, Trace metal behaviour in estuarine and riverine floodplain soils and sediments: A review Science of The Total Environment. ,vol. 407, pp. 3972- 3985 ,(2009) , 10.1016/J.SCITOTENV.2008.07.025
Samuel Van Herreweghe, Rudy Swennen, Valérie Cappuyns, Carlo Vandecasteele, Chemical associations of heavy metals and metalloids in contaminated soils near former ore treatment plants: a differentiated approach with emphasis on pHstat-leaching Journal of Geochemical Exploration. ,vol. 76, pp. 113- 138 ,(2002) , 10.1016/S0375-6742(02)00232-7
J. Japenga, W. Salomons, Dyke‐protected floodplains: A possible chemical time bomb? Land Degradation & Development. ,vol. 4, pp. 373- 380 ,(1993) , 10.1002/LDR.3400040421