NIOSH 7074 (Issue 2)

TUNGSTEN (soluble and insoluble)

This method uses Atomic Absorption (flame) to perform elemental analysis, not compound specific for cemented tungsten carbide samples. Cobalt can bequantitatively determined from the HCl extract used to remove interferences. with this method, it is possible to identify an additional four metals. Note special precaution to perform all acidic digestions in the chemical fume hood. NIOSH 7300 is an alternate analytical method.Tungsten′s many alloys have numerous applications, including incandescent light bulb filaments, X-ray tubes (as both the filament and target), electrodes in TIG welding, superalloys, and radiation shielding. Tungsten′s hardness and high density give it military applications in penetrating projectiles. Tungsten compounds are also often used as industrial catalysts.

Analysis Type (Application Method): Atomic absorption, flame

Link to NIOSH 7074 (Issue 2) Method

Compatible Filters:

37 mm 0.8 μm cellulose ester in cassette filter holder. Forceps to handle filter membrane.

Materials

     
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