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Merck

A review of tungsten: from environmental obscurity to scrutiny.

Journal of hazardous materials (2005-12-14)
A Koutsospyros, W Braida, C Christodoulatos, D Dermatas, N Strigul
PMID16343746
ABSTRACT

Since its discovery, tungsten, a transition element of Group VIb of the Periodic Table of Elements, and its compounds have been considered environmentally benign. Its presence in biological and drinking water samples in Fallon, Nevada, an acute lymphocytic leukemia cluster struck community has alarmed public health, environmental and regulatory agencies. Tungsten, a metal of extraordinary properties that make it hardly substitutable, is considered an essential commodity with a wide variety of uses stretching from household necessities to highly specialized applications. This work is undertaken in order to explore aspects of environmental behavior of tungsten and its compounds. Occurrence data in terrestrial, atmospheric, aquatic and biotic systems are presented. Various aspects of environmental chemistry, fate transport across environmental interfaces and toxicology are discussed with the objective of identifying knowledge gaps and outlining directions for future research.

MATERIALS
Product Number
Brand
Product Description
GF31722263
Tungsten, foil, 0.2m coil, thickness 0.05mm, coil width .51mm, as rolled, 99.95%
GF67192544
Tungsten, foil, 0.2m coil, thickness 0.02mm, coil width .1mm, as rolled, 99.95%
GF86574831
Tungsten, foil, 2m coil, thickness 0.016mm, coil width .36mm, as rolled, 99.95%
GF74075452
Tungsten, foil, 100x100mm, thickness 0.1mm, as rolled, 99.95%
GF19334156
Tungsten, foil, 2m coil, thickness 0.05mm, coil width 1.5mm, as rolled, 99.95%
GF08123295
Tungsten, foil, 0.5m coil, thickness 0.08mm, coil width .9mm, as rolled, 99.95%
GF53840099
Tungsten, foil, 0.2m coil, thickness 0.10mm, coil width .9mm, as rolled, 99.95%
GF01998243
Tungsten, foil, 2m coil, thickness 0.035mm, coil width .75mm, as rolled, 99.95%
GF14472514
Tungsten, foil, 0.2m coil, thickness 0.1mm, coil width .6mm, as rolled, 99.95%
GF91197748
Tungsten, foil, 1m coil, thickness 0.1mm, coil width .6mm, as rolled, 99.95%
GF13618155
Tungsten, foil, 2m coil, thickness 0.035mm, coil width 1.5mm, as rolled, 99.95%
GF49335015
Tungsten, foil, 1m coil, thickness 0.025mm, coil width 1mm, as rolled, 99.95%
GF17364191
Tungsten, foil, 2m coil, thickness 0.08mm, coil width .9mm, as rolled, 99.95%
GF87677915
Tungsten, foil, 1m coil, thickness 0.08mm, coil width .9mm, as rolled, 99.95%
GF32151541
Tungsten, foil, 0.5m coil, thickness 0.1mm, coil width .6mm, as rolled, 99.95%
GF18352425
Tungsten, foil, 0.2m coil, thickness 0.1mm, coil width 1.5mm, as rolled, 99.95%
GF42014078
Tungsten, foil, 2m coil, thickness 0.6mm, coil width 1mm, as rolled, 99.95%
GF42312305
Tungsten, foil, 2m coil, thickness 0.02mm, coil width .1mm, as rolled, 99.95%
GF06023067
Tungsten, foil, 0.5m coil, thickness 0.035mm, coil width 1.5mm, as rolled, 99.95%
GF86869153
Tungsten, foil, 2m coil, thickness 0.10mm, coil width .9mm, as rolled, 99.95%
GF02220567
Tungsten, foil, 0.5m coil, thickness 0.1mm, coil width 1.5mm, as rolled, 99.95%
GF36484229
Tungsten, foil, 0.5m coil, thickness 0.04mm, coil width 0.7mm, as rolled, 99.95%
GF42004707
Tungsten, foil, 5m coil, thickness 0.10mm, coil width .9mm, as rolled, 99.95%
GF18740550
Tungsten, foil, 1m coil, thickness 0.035mm, coil width 1.5mm, as rolled, 99.95%
GF68135025
Tungsten, foil, 0.5m coil, thickness 0.6mm, coil width 1mm, as rolled, 99.95%
GF75205885
Tungsten, foil, 5m coil, thickness 0.1mm, coil width 1.5mm, as rolled, 99.95%
GF76537547
Tungsten, foil, 5m coil, thickness 0.02mm, coil width .5mm, as rolled, 99.95%
GF39616724
Tungsten, mesh, 50x50mm, nominal aperture 0.2mm, wire diameter 0.05mm, 100 wires/inch, open area 64%, plain weave mesh, 99.95%
GF49127014
Tungsten, insulated wire, 20m, conductor diameter 0.075mm, insulation thickness 0.02mm, PTFE (polytetrafluoroethylene) insulation, 99.9%
GF22261823
Tungsten, foil, not light tested, 50x50mm, thickness 0.005mm, 99.95%