Session: Tungsten: Occurrence, Environmental Fate, Potential Ecological and Health Effects


GEOC		Monday, 29 August 2005

8:00 AM-12:00 PM Washington DC Convention Center -- 203A, Oral
Tungsten: Occurrence, Environmental Fate, Potential Ecological and Health Effects

Organizers:	Washington Braida Dimitris Dermatas Agamemnon Koutsospyros
8:00 AM		Introductory Remarks
8:15 AM	35	Tungsten occurrence across environmental compartments Agamemnon Koutsospyros, Washington Braida, Christos Christodoulatos, Dimitris Dermatas, Nikolay Strigul
8:45 AM	36	Tungsten: Occurrence,chemistry, environmental and health exposure issues Benedict C. Gbaruko, Jude C. Igwe, Rex C. Nwokoma, Darlington Ebere Aguwa, Chika Ogbonna
9:15 AM	37	Occurrence and geochemistry of tungsten in the Carson River Basin, Nevada, U.S Michael J. Pardus, Julie K. Sueker, Tyler E. Gass
9:45 AM		Intermission
10:00 AM	38	Dissolution kinetics of metallic tungsten in the presence of common alloying elements Adebayo A. Ogundipe, Washington Braida, Christos Christodoulatos, Dimitris Dermatas
10:30 AM	39	Suppression of tungsten’s leachability in water by selected additives Hans-Joachim Lunk, Sheema Roychowdhury, Henry J. Stevens
11:00 AM	40	Competitive adsorption/desorption of tungstate, molybdate and phosphate anions on goethite Nan Xu, Christos Christodoulatos, Washington Braida
11:30 AM	41	Corrosion behavior of tungsten alloys in the environment Adebayo A. Ogundipe, Washington Braida, Christos Christodoulatos, Dimitris Dermatas

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