In certain regions of the Americas, platinum is often found free or alloyed with iridium as "platiniridium."
Platinum compounds are rare in nature, but several have been prepared artificially.
Palladium, platinum, and rhodium have been used as oxidation catalyst in catalytic converters to treat automobile exhaust emissions.
Platinum's rarity as a metal has led advertisers to associate it with exclusivity and wealth.
Platinum is an extremely rare metal, occurring as only 5 parts per billion in the Earth's crust.
Based on its corrosion resistance and durability, a platinum-iridium alloy has served well in preserving standards of measurement.
Naturally occurring platinum appears to have been used by the craftsmen of ancient Egypt.
Platinum hexafluoride (PtF6) is an extremely strong fluorinating agent.
A major theological impetus for the veneration of Mary originated from the Christological controversies of the early church—many debates defining the divinity or humanity of Jesus.
A wide range of platinum-group metal alloy compositions are used in low-voltage and low-energy contacts, thick- and thin-film circuits, thermocouples and furnace components, and electrodes.
Some products, such as blenders and vehicles with a silvery-white color, are identified as "platinum" (although a higher certification of "diamond" does exist).
Platinum is remarkably resistant to corrosion, including chemical attack by hydrochloric acid and nitric acid.
On the other hand, certain platinum-based anti-cancer agents (such as cisplatin) can have toxic side effects, including cumulative, irreversible kidney damage.
The alchemical symbol for platinum (shown on the left) was made by joining the symbols of silver and gold.
The first European account of platinum can be found in the writings of the Italian humanist Julius Caesar Scaliger (1484-1558).
Platinum (chemical symbol Pt, atomic number 78) is a silvery gray precious metal that is highly resistant to corrosion and an extremely good catalyst for certain chemical reactions.
Naturally occurring platinum is composed of five stable isotopes and many radioisotopes.
Another important compound of platinum is cisplatin, which is used as a chemotherapy drug to treat various types of cancers.
Two years later, he and Juan published their experiences in South America, including a reference to platinum.
Platinum is a chemical element in the periodic table and is classified as a "transition metal."
A musical album that has sold more than one million copies is credited as "platinum."
Six elements in the periodic table are collectively known as the "platinum group" or "platinum family."
Platinum, platinum alloys, and iridium are used as crucible materials for the growth of single crystals, especially oxides.
Being an unreactive metal, platinum by itself normally does not cause health problems.
Platinum-supported catalysts are used in the refining of crude oil, reforming, and other processes used in the production of high-octane gasoline and aromatic compounds for the petrochemical industry.
Platinum is also produced commercially as a by-product of nickel ore processing.
Platinum compounds are rare in nature, but some artificially synthesized ones are used as anti-cancer drugs.