【China Molybdenum Industry News Network】
Molybdenum in Biology:
Molybdenum powder can be applied to hard metallic surfaced through the application of a thermal spray or plasma spray process. The plasma spray process involves the spraying of a heat softened or molten material onto a surface to provide a coating. Molybdenum powder is injected into a very high temperature plasma flame where it is quickly heated and accelerated at high velocity. The heated material then impacts the substrate surface and quickly cools, forming a coating. Molybdenum powder is often used in plasma spray applications to improve the heat and wear resistance of the substrate material.
Molybdenum is an essential trace mineral in human and animal nutrition. Molybdenum can be found in several tissues in the human body and is required by some enzymes in the catabolism of sulfur amino acids and purines. The average adult body contains about 9 mg of molybdenum with the highest concentrations being in the liver, kidneys, skin and bone. Molybdenum is reasonably scarce in the Earths crust, being only three times more abundant than gold.
Estimated Crustal Abundance: 1.2 milligrams per kilogram
Estimated Oceanic Abundance: 1×10-2 milligrams per liter
Molybdenum toxicity in grazing animals (ruminants) can occur when grazing on soil abundant in molybdenum but nutritionally deficient in copper. The excess molybdenum causes the excretion of copper reserves, eventually leading to copper deficiency and early death. Molybdenum deficiency in humans is extremely rare.
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