Controls on tungsten concentrations in groundwater flow systems: The role of adsorption, aquifer sediment Fe(III) oxide/oxyhydroxide content, and thiotungstate formation

Chemical Geology

Volumn 351, Issue , 2013, Pages 76-94

  Johannesson, Karen H ^a   Dave, Heeral B ^b   Mohajerin, T Jade ^a   Datta, Saugata ^c  

^a Tulane University   (United States)

^b UNIVERSITY OF TEXAS AT ARLINGTON   (United States)

^c KANSAS STATE UNIVERSITY   (United States)

Author keywords

Geochemical modeling; Groundwater; Solution complexation; Surface complexation; Thiotungstate; Tungsten

Indexed keywords

ADSORPTION/DESORPTION; GEOCHEMICAL MODELING; GEOCHEMICAL PARAMETERS; GROUNDWATER FLOW SYSTEMS; SOLID-PHASE SPECIATION; SURFACE COMPLEXATION; THIOTUNGSTATE; TUNGSTEN CONCENTRATIONS;

AQUIFERS; CHEMICAL PROPERTIES; DISSOLUTION; GROUNDWATER; GROUNDWATER RESOURCES; HYDROGEOLOGY; IRON COMPOUNDS; MOLYBDENUM COMPOUNDS; OXIC SEDIMENTS; RECHARGING (UNDERGROUND WATERS); SAND; SEDIMENTOLOGY; TUNGSTEN; TUNGSTEN COMPOUNDS;

HYDROCHEMISTRY;

ADSORPTION; AQUIFER; COMPLEXATION; CONCENTRATION (COMPOSITION); DESORPTION; GROUNDWATER FLOW; IRON HYDROXIDE; IRON OXIDE; MOLYBDENUM; PH; RECHARGE; REDOX CONDITIONS; SOLUTE; TUNGSTEN; WATER CHEMISTRY;

AQUIA AQUIFER; CARRIZO AQUIFER; MARYLAND; TEXAS; UNITED STATES;

CARRIZO;

EID: 84878711625     PISSN: 00092541     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.chemgeo.2013.05.002     Document Type: Article

References (123)

1. Aeschbach-Hertig W., Stute M., Clark M., Reuter R.F., Schlosser P. A paleotemperature record derived from dissolved noble gases in groundwater of the Aquia aquifer (Maryland, USA). Geochimica et Cosmochimica Acta 2002, 66:797-817.
2. Appelo C.A.J. Cation and proton exchange, pH variations, and carbonate reactions in a freshening aquifer. Water Resources Research 1994, 30:2793-2805.
3. Arnórsson S., Óskarsson N. Molybdenum and tungsten in volcanic rocks and in surface and <100°C ground waters in Iceland. Geochimica et Cosmochimica Acta 2007, 71:284-304.
4. ATSDR (Agency for Toxic Substances, Disease Registry) Toxicological Profile for Tungsten (accessed 3 December 2009). http://www.atsdr.cdc.gov/toxprofiles/tp186.pdf.
5. Back W., Barnes I. Relation of electrochemical potentials and iron content to groundwater flow patterns. United States Geological Survey Professional Paper 1965, 498-C. (16 pp.).
6. Barcelona M.J., Holm T.R., Shock M.R., George G.K. Spatial and temporal gradients in aquifer oxidation-reduction conditions. Water Resources Research 1989, 25:991-1003.
7. Basu R., Haque S.E., Tang J., Ji J., Johannesson K.H. Evolution of selenium concentrations and speciation in groundwater flow systems: Upper Floridan (Florida) and Carrizo Sand (Texas) aquifers. Chemical Geology 2007, 246:147-169.
8. Bednar A.J., Mirecki J.E., Inouye L.S., Winfield L.E., Larson S.L., Ringelberg D.B. The determination of tungsten, molybdenum, and phosphorus oxyanions by high performance liquid chromatography inductively coupled plasma mass spectrometry. Talanta 2007, 72:1828-1832.
9. Bednar A.J., Jones W.T., Boyd R.E., Ringelberg D.C., Larson S.L. Geochemical parameters influencing tungsten mobility in soils. Journal of Environmental Quality 2008, 37:229-233.
10. Bednar A.J., Boyde R.E., Jones W.T., McGrath C.J., Johnson D.R., Chappell M.A., Ringelberg D.B. Investigation of tungsten mobility in soil using column tests. Chemosphere 2009, 75:1049-1056.
11. Bethke C.M. Geochemical and Biogeochemical Reaction Modeling 2008, Cambridge University Press, Cambridge, UK, (543 pp.). 2nd ed.
12. Bethke C.M., Yeakel S. Geochemist's Workbench® release 8.0. Reaction Modeling Guide 2010, University of Illinois, Urbana, IL, (84 pp.).
13. Bethke C.M., Ding D., Jin Q., Sanford R.A. Origin of microbiological zoning in groundwater flows. Geology 2008, 36:739-742.
14. Bostick B.C., Fendorf S., Helz G.R. Differential adsorption of molybdate and tetrathiomolybdate on pyrite. Environmental Science & Technology 2003, 37:285-291.
15. Burdige D.J. Geochemistry of Marine Sediments 2006, Princeton University Press, Princeton, NJ, (609 pp.).
16. 4He production. Earth and Planetary Science Letters 2004, 222:897-913.
17. Castro M.C., Goblet P. Calibration of regional groundwater flow models: working toward a better understanding of site-specific systems. Water Resources Research 2003, 39(6):1172. 10.1029/2002/WR001653.
18. Castro M.C., Goblet P. Calculation of ground water ages - a comparative analysis. Ground Water 2005, 43:368-380.
19. 14C ages in simple aquifer systems: implications for groundwater flow and chronologies. Applied Geochemistry 2000, 15:1137-1167.
20. Champ D.R., Oulens J., Jackson R.E. Oxidation-reduction sequences in groundwater flow systems. Canadian Journal of Earth Sciences 1979, 16:12-23.
21. Chapelle F.H. Ground-water geochemistry and calcite cementation of the Aquia aquifer in southern Maryland. Water Resources Research 1983, 19:545-558.
22. Chapelle F.H., Drummond D.D. Hydrogeology, digital simulation, and geochemistry of the Aquia and Piney Point - Nanjemoy aquifer system in southern Maryland. Maryland Geological Survey, Report of Investigation No. 38 1983, (100 pp.).
23. Chapelle F.H., Knobel L.L. Aqueous geochemistry of the exchangeable cation composition of glauconite in the Aquia aquifer, Maryland. Ground Water 1983, 21:343-352.
24. Chapelle F.H., Knobel L.L. Stable carbon isotopes of bicarbonate in the Aquia aquifer, Maryland - evidence for an isotopically heavy source of carbon dioxide. Ground Water 1985, 23:592-599.
25. Clarke R., King J. The Water Atlas 2004, The New Press, New York.
26. Clausen J.L., Korte N. Environmental fate of tungsten from military use. The Science of the Total Environment 2009, 407:2887-2893.
27. Clausen J.L., Taylor S., Larson S.L., Bednar A.J., Ketterer M., Griggs C.S., Lambert D.J., Hewitt A.D., Ramsey C.A., Bigl S.R., Bailey R.N., Perron N.M. Fate and Transport of Tungsten at Camp Edwards Small Arms Ranges, ERDC TR-07-07, Strategic Environmental Research and Development Program 2007, U. S. Army Corps of Engineers, Engineer Research and Development Center, (http://el.erdc.usace.army.mil/elpubs/pdf/tr07-5.pdf, accessed 2 December 2009).
28. Cline J.D. Spectrophotometric determination of hydrogen sulfide in natural waters. Limnology and Oceanography 1969, 14:454-458.
29. Cotton F.A., Wilkinson G., Murillo C.A., Bochmann M. Advanced Inorganic Chemistry 1999, John Wiley and Sons, New York. 6th edition.
30. Cutler N.K. The geochemistry of groundwater and sediments governing tungsten concentrations in the basin-fill aquifers Fallon, Nevada 2011, (M.S. thesis), Univ. Nevada, Reno, NV.
31. Dave H., Johannesson K.H. Geochemistry of tungsten in groundwater flow systems. Geological Society of America Abstracts with Programs 2008, 40(6):341.
32. Dave H., Johannesson K.H. An initial examination of tungsten geochemistry along groundwater flow paths. Eos, Transactions of the American Geophysical Union 2008, 89(53). (Fall Meet. Suppl., Abstract B21B-0352).
33. Delaney J.M., Lundeen S.R. The LLNL thermochemical database. Lawrence Livermore National Laboratory Report UCRL-21658 1989.
34. Dermatas D., Braida W., Christodoulatos C., Strigul N., Panikov N., Los M., Larson S. Solubility, sorption, and soil respiration effects of tungsten and tungsten alloys. Environmental Forensics 2004, 5:5-13.
35. Dermatas D., Cao X., Tsaneva V., Shen G., Grubb D.G. Fate and behavior of metal(loid) contaminants in an organic matter-rich shooting range soil: implications for remediation. Water, Air, and Soil Pollution: Focus 2006, 6:143-155.
36. Dixit S., Hering J.G. Comparison of arsenic(V) and arsenic(III) sorption onto iron oxide minerals: Implications for arsenic mobility. Environmental Science & Technology 2003, 37:4182-4189.
37. Drummond D.D. Hydrogeology of the coastal plain aquifer system in Queen Anne's and Talbot Counties, Maryland, with a discussion of brackish-water intrusion in the Aquia aquifer. Maryland Geological Survey, Report of Investigations No. 72 2001.
38. Drummond D.D. Water-supply potential of the coastal plain aquifers in Calvert, Charles, and St. Mary's Counties, Maryland, with emphasis on the upper Patapsco and lower Patapsco aquifers. Maryland Geological Survey, Report of Investigations No. 76 2007.
39. Drummond D.D., Bolton D.W. Arsenic in ground water in the coastal plain aquifers of Maryland. Maryland Geological Survey, Report of Investigations No. 78 2010.
40. Dutton A.R., Nicot J.-P., Kier K.S. Hydrodynamic convergence of hydropressured and geopressured zones, Central Texas, Gulf of Mexico Basin, USA. Hydrogeology Journal 2006, 14:859-867.
41. Dzombak D.A., Morel F.M.M. Surface Complexation Modeling: Hydrous Ferric Oxide 1990, John Wiley & Sons, New York, (393 pp.).
42. Standard Methods for the Examination of Water and Wastewater 1995, (3-67-68). A.D. Eaton, L.S. Clesceri, A.E. Greenberg (Eds.).
43. Edel J., Sabbioni E., Pietra R., Rossi A., Torre M., Rizzato G., Fraioli P. Trace metal lung disease: in vitro interaction of hard metals with human lung and plasma components. The Science of the Total Environment 1990, 95:107-117.
44. Edmunds W.M., Miles D.L., Cook J.M. A comparative study of sequential redox processes in three British aquifers. Proceedings of Hydrochemical Balances of Freshwater Systems, Uppsala Symposium 1984, vol. 150:55-70. IAHS Publication. E. Eriksson (Ed.).
45. U.S.EPA Emerging Contaminant - Tungsten. Fact Sheet 2008, (EPA 505-F-07-005).
46. Erickson B.E., Helz G.R. Molybdenum(VI) speciation in sulfidic waters: stability and lability of thiomolybdates. Geochimica et Cosmochimica Acta 2000, 64:1149-1158.
47. Fitzgerald W.F. Clean hands, dirty hands: Clair Patterson and the aquatic biogeochemistry of mercury. Clean Hands: Clair Patternson's Crusade against Environmental Lead Contamination 1999, 119-137. Nova Science Publishers, Inc., Commack, NY. C.I. Davidson (Ed.).
48. Gal C., Wolfgang F., Möller J. Re-examination of the cadmium reduction method and optimisation of conditions for the determination of nitrate by flow injection analysis. Microchimica Acta 2004, 146:155-164.
49. Goto K., Taguchi S., Fukue Y., Ohta K. Spectrophotometric determination of manganese with 1-(2-pyrdiylazo)-2-napthol and a non ionic surfactant. Talanta 1977, 24:752-753.
50. Gustafsson J.P. Modelling molybdate and tungstate adsorption to ferrihydrite. Chemical Geology 2003, 200:105-115.
51. Gustafsson J.P., Bhattacharya P. Geochemical modelling of arsenic adsorption onto oxide surfaces. Trace Metals and Other Contaminants in the Environment 2007, vol. 9:159-206. Elsevier, Amsterdam. P. Bhattacharya, A.B. Mukherjee, J. Bundschuh, R. Zevenhoven, R.H. Loeppert (Eds.).
52. Hach DR 2800 Spectrophotometer: Procedures Manual 2007, Hach Company, Germany, (Cat. No. DOC022.53.00725). 2nd ed.
53. Hamlin S.H. Depositional and groundwater flow systems of the Carrizo-upper Wilcox, South Texas. Report of Investigations - Texas, University of Texas, Bureau of Economic Geology, Rept. 175 1988, (61 pp.).
54. Hansen H.J. Sedimentary facies of the Aquia formation in the subsurface of the Maryland Coastal Plain. Maryland Geological Survey Report of Investigations 1974, 21.
55. Haque S.E. Hydrogeochemical Evolution of Arsenic along Groundwater Flow Paths: Linking Aqueous and Solid Phase Arsenic Speciation 2007, (Ph.D. dissertation), Univ. Texas at Arlington, Arlington, TX, (145 pp.).
56. Haque S., Johannesson K.H. Arsenic concentrations and speciation along a groundwater flow path: the Carrizo Sand aquifer, Texas, USA. Chemical Geology 2006, 228:57-71.
57. Haque S., Ji J., Johannesson K.H. Evaluating mobilization and transport of arsenic in sediments of Aquia aquifer, Maryland, USA. Journal of Contaminant Hydrology 2008, 99:68-84.
58. Harita Y., Hori T., Sugiyama M. Release of trace oxyanions from littoral sediments and suspended particles induced by pH increase in the epilimnion of lakes. Limnology and Oceanography 2005, 50:636-645.
59. Haug T.J., Neal A., Yang N., Telfeyan K., Datta S., Johannesson K.H. Arsenic and tungsten in groundwaters of West Bengal, India. Mineralogical Magazine 2011, 75(3):991.
60. Helz G.R., Miller C.V., Charnock J.M., Mosselmans J.F.W., Pattrick R.A.D., Garner C.D., Vaughan D.J. Mechanism for molybdenum removal from the sea and its concentrations in black shales: EXAFS evidence. Geochimica et Cosmochimica Acta 1996, 60:3631-3642.
61. Helz G.R., Bura-Nakíc E., Mikac N., Ciglenečki I. New model for molybdenum behavior in euxinic waters. Chemical Geology 2011, 284:323-332.
62. Herbelin A.L., Westall J.C. FITEQL 4.0: a computer program for determination of chemical equilibrium constants from experimental data. Department of Chemistry Rept. 99-01 1999, Oregon State University, Corvallis, OR.
63. Jakobsen R., Postma D. Redox zoning, rates of sulfate reduction and interactions with Fe-reduction and methanogenesis in a shallow sandy aquifer, Rømø, Denmark. Geochimica et Cosmochiica Acta 1999, 63:137-151.
64. Johannesson K.H., Neumann K. Geochemical cycling of mercury in a deep, confined aquifer: Insights from biogeochemical reactive transport modeling. Geochimica et Cosmochimica Acta 2013, 106:25-43.
65. Johannesson K.H., Tang J. Conservative behavior of arsenic and other oxyanion-forming trace elements in an oxic groundwater flow system. Journal of Hydrology 2009, 378:13-28.
66. Johannesson K.H., Lyons W.B., Graham E.Y., Welch K.A. Oxyanion concentrations in eastern Sierra Nevada rivers - 3. Boron, molybdenum, vanadium, and tungsten. Aquatic Geochemistry 2000, 6:19-46.
67. Johannesson K.H., Tang J., Daniels J.M., Bounds W.J., Burdige D.J. Rare earth element concentrations and speciation in organic-rich blackwaters of the Great Dismal Swamp, Virginia, USA. Chemical Geology 2004, 209:271-294.
68. Kalinich J.F., Emond C.A., Dalton T.K., Mog S.R., Coleman G.D., Kordell J.E., Miller A.C., McClain D.E. Embedded weapons-grade tungsteon alloy shrapnel rapidly induces metastatic high-grade rhabdomyosarcomas in F344 rats. Environmental Health Perspectives 2005, 113:729-734.
69. Kashiwabara T., Takahashi Y., Marcus M.A., Uruga T., Tanida H., Terada Y., Usui A. Tungsten species in natural ferromanganese oxides related to its different behavior from molybdenum in oxic ocean. Geochimica et Cosmochimica Acta 2013, 106:364-378.
70. Kelly A.D.R., Lemaire M., Young Y.K., Eustache J.H., Guilbert C., Molina M.F., Mann K.K. In vivo tungsten exposure alters B-cell development and increases DNA damage in murine bone marrow. Toxicological Sciences 2013, 131:434-446.
71. Koschinsky A., Hein J.R. Uptake of elements from seawater by ferromanganese crusts: solid-phase associations and seawater speciation. Marine Geology 2003, 198:331-351.
72. Koutsospyros A., Braida W., Christodoulatos C., Dermatas D., Strigul N. A review of tungsten: from environmental obscurity to scrutiny. Journal of Hazardous Materials 2006, 136:1-19.
73. Krom M.D. Spectrophotometric determination of ammonia: a study of a modified Berthelot reduction using salicylate and dichlorisocyanurate. The Analyst 1980, 105:305-316.
74. Lee M.-K., Griffin J., Saunders J., Wang Y., Jean J.-S. Reactive transport of trace elements and isotope in the Eutaw coastal plain aquifer, Alabama. Journal of Geophysical Research 2007, 112:G02026. 10.1029/2006JG00238.
75. Lovley D.R., Goodwin S. Hydrogen concentrations as an indicator of the predominant terminal electron-accepting reactions in aquatic sediments. Geochimica et Cosmochimica Acta 1988, 52:2993-3003.
76. Lovley D.R., Phillips E.J.P. Competitive mechanisms for inhibition of sulfate reduction and methane production in the zone of ferric iron reduction in sediments. Applied and Environmental Microbiology 1987, 53:2636-2641.
77. Marquet P., François B., Vignon P., Lachâtre G. A soldier who had seizures after drinking quarter of a litre of wine. Lancet 1996, 348:1070.
78. Miyauchi T., Iwashita M., Shimamura T. Behaviors of trace elements in Tsukui Reservoir inferred from ICP-MS analysis. Journal of Environmental Chemistry 1998, 8:13-21.
79. Mohajerin T.J., Johannesson K.H. Determining thiotungstate stability constants for low temperature, low ionic strength aqueous solutions. 22nd V. M. Goldschmidt Conference, Montreal, Canada 2012.
80. Page R.A. The questionable age of the Aquia Formation. Journal of Paleontology 1957, 33:347-350.
81. Park J., Sanford R.A., Bethke C.M. Geochemical and microbiological zonation of the Middendorf aquifer, South Carolina. Chemical Geology 2006, 230:88-104.
82. Peão M.N.D., Águas A.P., Sá C.M., Grande N.R. Inflammatory response of the lung to tungsten particles: an experimental study in mice submitted to intratracheal instillation of a calcium tungstate powder. Lung 1993, 171:187-201.
83. Pearson F.J., White D.E. Carbon 14 ages and flow rates of water in Carrizo Sand, Atascosa County, Texas. Water Resources Research 1967, 3:251-261.
84. Penny E., Lee M.-K., Morton C. Groundwater and microbial processes of Alabama coastal plain aquifers. Water Resources Research 2003, 39(11):1320. 10.1029/2003/WR001963.
85. Petrunic B.M., Al T.A. Mineral/water interactions in tailings from a tungsten mine, Mount Pleasant, New Brunswick. Geochimica et Cosmochimica Acta 2005, 69:2469-2483.
86. Philpotts A.R. Principles of Igneous and Metamorphic Petrology 1990, Prentice Hall, Englewood Cliffs, NJ.
87. 4-reduction interface. Geochimica et Cosmochimica Acta 1996, 60:3169-3175.
88. 36Cl/Cl: implications for flow velocities. Water Resources Research 1996, 32:1163-1171.
89. Rickard D., Luther G.W. Chemistry of iron sulfides. Chemical Reviews 2007, 107:514-562.
90. Rickard D., Griffith A., Oldroyd A., Butler I.B., Lopez-Capel E., Manning D.A.C., Apperley D.C. The composition of nanoparticulate mackinawite, tetragonal iron(II) monosulfide. Chemical Geology 2006, 235:286-298.
91. Rodríguez-Fortea A., Villà-Nadal L., Poblet J.M. Hydration of hydrogentungstate anions at different pH conditions: A Car-Parrinello molecular dynamics study. Inorganic Chemistry 2008, 47:7745-7750.
92. Sahle W., Krantz S., Christensson B., Laszlo I. Preliminary data on hard metal workers exposure to tungsten oxide fibres. The Science of the Total Environment 1996, 191:153-167.
93. Seiler R.L., Stollenwerk K.G., Garbarino J.R. Factors controlling tungsten concentrations in ground water, Carson Desert, Nevada. Applied Geochemistry 2005, 20:423-441.
94. Sharif Md.S.U., Davis R.K., Steele K.F., Kim B., Hayes P.D., Kresse T.M., Fazio J.A. Surface complexation modeling for predicting solid phase arsenic concentrations in the sediments of the Mississippi River Valley alluvial aquifer, Arkansas, USA. Applied Geochemistry 2011, 26:496-504.
95. Sheppard P.R., Ridenour G., Speakman R.J., Witten M.L. Elevated tungsten and cobalt in airborne particulates in Fallon, Nevada: possible implications for the childhood leukemia cluster. Applied Geochemistry 2006, 21:152-165.
96. Sheppard P.R., Speakman R.J., Ridenour G., Witten M.L. Temporal variability of tungsten and cobalt in Fallon, Nevada. Environmental Health Perspectives 2007, 115:715-719.
97. Smedley P.L., Edmunds W.M. Redox patterns and trace-element behaviour in the East Midlands Triassic sandstone aquifer, U.K. Ground Water 2002, 40:44-58.
98. Smith R.M., Martell A.E. NIST critically selected stability constants of metal complexes database. NIST Standard References Database 46, Version 8.0 2004.
99. Solley W.B., Pierce R.R., Perlman H.A., Solley W.B., Pierce R.R., Perlman H.A. Estimate use of water in the United States in 1990. U.S. Geol. Surv. Circular 1993, 1081. (76 pp.).
100. Sprince N.L., Oliver L.C., Chamberlain R.I., Eisen E.A., Greene R.E. Etiology and pathogenesis of hard metal disease. The Science of the Total Environment 1994, 150:55.
101. Steinburg K.K., Relling M.V., Gallagher M.L., Greene C.N., Rubin C.S., French D., Holmes A.K., Carroll W.L., Koontz D.A., Sampson E.J., Satten G.A. Genetic studies of a cluster of acute lymphoblastic leukemia cases in Churchill County, Nevada. Environmental Health Perspectives 2007, 115:158-164.
102. Stookey L. Ferrozine - a new spectrophotometric reagent for iron. Analytical Chemistry 1970, 42:779-781.
103. Strigul N. Does speciation matter for tungsten ecotoxicology?. Ecotoxicology and Environment Safety 2010, 73:1099-1113.
104. Strigul N., Koutsospyros A., Arienti P., Christodoulatos C., Dermatas D., Braida W. Effects of tungsten on environmental systems. Chemosphere 2005, 61:248-258.
105. Strigul N., Galdun C., Vaccari L., Ryan T., Braida W., Christodoulatos C. Influence of speciation on tungsten toxicity. Desalination 2009, 248:869-879.
106. Strigul N., Koutsispyros A., Christodoulatos C. Tungsten speciation and toxicity: acute toxicity of mono- and poly-tungstates to fish. Ecotoxicology and Environment Safety 2010, 73:164-171.
107. Stute M., Schlosser P., Clark J.F., Broecker W.S. Paleotemperatures in the southwestern United States derived from noble gases in ground water. Science 1992, 256:1000-1003.
108. Swedlund P.J., Webster J.G. Adsorption and polymineralisation of silicic acid on ferrihydrite, and its affect on arsenic adsorption. Water Research 1999, 33:3413-3422.
109. Tang J., Johannesson K.H. Rare earth element concentrations, speciation, and fractionation along groundwater flow paths: the Carrizo Sand (Texas) and Upper Floridan aquifers. Rare Earth Elements in Groundwater Flow Systems 2005, 223-251. Springer, Dordrecht. K.H. Johannesson (Ed.).
110. Tang J., Johannesson K.H. Controls on the geochemistry of rare earth elements along a groundwater flow path in the Carrizo Sand aquifer, Texas, USA. Chemical Geology 2006, 225:156-171.
111. Tang J., Whittecar G.R., Johannesson K.H., Daniels W.L. Potential contaminants at a dredged spoil placement site, Charles City County, Virginia, as revealed by sequential extraction. Geochemical Transactions 2004, 5:49-60.
112. Tessier A., Campbell P.G.C., Bisson M. Sequential extraction procedure for the speciation of particulate trace metals. Analytical Chemistry 1979, 51:844-851.
113. Valocchi A.J., Street R.L., Roberts P.V. Transport of ion-exchanging solutes in groundwater: chromatographic theory and field simulation. Water Resources Research 1981, 17:1517-1527.
114. Vorlicek T.P., Kahn M.D., Kasuya Y., Helz G.R. Capture of molybdenum in pyrite-forming sediments: role of ligand-induced reduction by polysulfides. Geochimica et Cosmochimica Acta 2004, 68:547-556.
115. Welch A.H., Lico M.S. Factors controlling As and U in shallow ground water, southern Carson Desert, Nevada. Applied Geochemistry 1998, 13:521-539.
116. Wesolowski D., Drummond S.E., Mesmer R.E., Ohmoto H. Hydrolysis equilibrium of tungsten(VI) in aqueous sodium chloride solutions to 300°C. Inorganic Chemistry 1984, 23:1120-1132.
117. Willis S.S., Johannesson K.H. Controls on the geochemistry of rare earth elements in sediments and groundwaters of the Aquia aquifer, Maryland, USA. Chemical Geology 2011, 285:32-49.
118. Willis S.S., Haque S.E., Johannesson K.H. Arsenic and antimony in groundwater flow systems: a comparative study. Aquatic Geochemistry 2011, 17:775-807.
119. 4 (aq) in the range 300-600°C at 1kbar: calculation of scheelite solubility. Geochimica et Cosmochimica Acta 1992, 56:1827-1836.
120. Wright M.R. An Introduction to Electrolyte Solutions 2007, John Wiley and Sons, Chichester, UK, (574 pp.).
121. Xu N., Christodoulatos C., Braida W. Adsorption of molybdate and tetrathiomolobdate onto pyrite and goethite: effect of pH and competitive anions. Chemosphere 2006, 62:1726-1735.
122. Xu N., Christodoulatos C., Koutsospyros A., Braida W. Competitive sorption of tungstate, molybdate and phosphate mixtures onto goethite. Land Contamination & Reclamation 2009, 17:45-57.
123. Yatsimirskii K.B., Romanov V.F. Kinetics and mechanism of the oxidation of p-phenylenediamine by potassium iodate in the presence of tungsten(VI) compounds. Russian Journal of Inorganic Chemistry 1965, 10:877-880.