Tungsten - 74W: biological information
Tungsten has a limited biological role. A number of enzymes (oxidoreductases) employ tungsten in a way related to molybdenum, (using tungsten.pterin complex). The structure of a tungstoenzyme aldehyde ferredoxin oxidoreductase is known (Protein Data Bank code 1AOR).
Levels in humans
The abundances of the elements in humans.
- Human abundance by weight: (no data) ppb by weight
- Human abundance by atoms: (no data) atoms relative to C = 1000000
How much tungsten is in your body? Find out here.
You can use this form to calculate how much tungsten your body contains. Enter your weight in either kilograms or pounds and click the "Calculate" button. You must enter a number, not text! Elements for which there are no data will always give a value of zero for the weight, no matter what you put in the weight box.
Hazards and Risks
Hazards and risks associated with tungsten:
Tungsten metal does not normally cause problems but all tungsten compounds should be regarded as highly toxic. The metal dust presents a fire and explosion hazard.
- J.E. Huheey, E.A. Keiter, and R.L. Keiter in Inorganic Chemistry : Principles of Structure and Reactivity, 4th edition, HarperCollins, New York, USA, 1993.
- S. Budavari (Ed.) in The Merck Index, 11th ed., Merck, USA, 1989.
- N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.