Suchen Sie nach Platinum Symbol-Stockbildern in HD und Millionen weiteren lizenzfreien Stockfotos, Illustrationen und Vektorgrafiken in der. Finden Sie perfekte Stock-Fotos zum Thema Platinum Symbol sowie redaktionelle Newsbilder von Getty Images. Wählen Sie aus erstklassigen Inhalten. Platin ist ein chemisches Element im Periodensystem der Elemente mit dem Symbol Pt und der Ordnungszahl Platin ist ein schweres, schmiedbares.
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Platinum Symbol Hallmarks and Maker's Marks VideoPlatinum - Periodic Table of Videos We need you! English: Alchemical symbol for platinum. Nebengruppeoder Nickelgruppe. Deutschland, um die Jahrhundertwende weltführend in der Chemietechnik, entwickelt wichtige Tonkatsu Soße Syntheseverfahren mit Crowns Euro von Katalysatoren.
Zeise's salt , containing an ethylene ligand, was one of the first organometallic compounds discovered. Dichloro cycloocta-1,5-diene platinum II is a commercially available olefin complex, which contains easily displaceable cod ligands "cod" being an abbreviation of 1,5-cyclooctadiene.
The cod complex and the halides are convenient starting points to platinum chemistry. Cisplatin , or cis -diamminedichloroplatinum II is the first of a series of square planar platinum II -containing chemotherapy drugs.
These compounds are capable of crosslinking DNA , and kill cells by similar pathways to alkylating chemotherapeutic agents. Archaeologists have discovered traces of platinum in the gold used in ancient Egyptian burials as early as BC.
For example, a small box from burial of Shepenupet II was found to be decorated with gold-platinum hieroglyphics. It is quite possible they did not recognize there was platinum in their gold.
The metal was used by pre-Columbian Americans near modern-day Esmeraldas, Ecuador to produce artifacts of a white gold-platinum alloy.
Archeologists usually associate the tradition of platinum-working in South America with the La Tolita Culture circa BC - AD , but precise dates and location is difficult, as most platinum artifacts from the area were bought secondhand through the antiquities trade rather than obtained by direct archeological excavation.
The resulting gold-platinum alloy would then be soft enough to shape with tools. It was often simply thrown away, and there was an official decree forbidding the adulteration of gold with platinum impurities.
Ulloa and Juan found mines with the whitish metal nuggets and took them home to Spain. Antonio de Ulloa returned to Spain and established the first mineralogy lab in Spain and was the first to systematically study platinum, which was in His historical account of the expedition included a description of platinum as being neither separable nor calcinable.
Ulloa also anticipated the discovery of platinum mines. After publishing the report in , Ulloa did not continue to investigate the new metal. In , he was sent to superintend mercury mining operations in Huancavelica.
In , Charles Wood,  a British metallurgist , found various samples of Colombian platinum in Jamaica, which he sent to William Brownrigg for further investigation.
In , after studying the platinum sent to him by Wood, Brownrigg presented a detailed account of the metal to the Royal Society , stating that he had seen no mention of it in any previous accounts of known minerals.
In , Henrik Scheffer published a detailed scientific description of the metal, which he referred to as "white gold", including an account of how he succeeded in fusing platinum ore with the aid of arsenic.
Scheffer described platinum as being less pliable than gold, but with similar resistance to corrosion. Carl von Sickingen researched platinum extensively in He succeeded in making malleable platinum by alloying it with gold, dissolving the alloy in hot aqua regia , precipitating the platinum with ammonium chloride , igniting the ammonium chloroplatinate, and hammering the resulting finely divided platinum to make it cohere.
Franz Karl Achard made the first platinum crucible in He worked with the platinum by fusing it with arsenic, then later volatilizing the arsenic. Because the other platinum-family members were not discovered yet platinum was the first in the list , Scheffer and Sickingen made the false assumption that due to its hardness—which is slightly more than for pure iron —platinum would be a relatively non-pliable material, even brittle at times, when in fact its ductility and malleability are close to that of gold.
Their assumptions could not be avoided because the platinum they experimented with was highly contaminated with minute amounts of platinum-family elements such as osmium and iridium , amongst others, which embrittled the platinum alloy.
Alloying this impure platinum residue called "plyoxen" with gold was the only solution at the time to obtain a pliable compound, but nowadays, very pure platinum is available and extremely long wires can be drawn from pure platinum, very easily, due to its crystalline structure, which is similar to that of many soft metals.
Chabaneau succeeded in removing various impurities from the ore, including gold, mercury, lead, copper, and iron.
This led him to believe he was working with a single metal, but in truth the ore still contained the yet-undiscovered platinum-group metals.
This led to inconsistent results in his experiments. At times, the platinum seemed malleable, but when it was alloyed with iridium, it would be much more brittle.
Sometimes the metal was entirely incombustible, but when alloyed with osmium, it would volatilize. This started what is known as the "platinum age" in Spain.
Platinum, along with the rest of the platinum-group metals , is obtained commercially as a by-product from nickel and copper mining and processing.
During electrorefining of copper , noble metals such as silver, gold and the platinum-group metals as well as selenium and tellurium settle to the bottom of the cell as "anode mud", which forms the starting point for the extraction of the platinum-group metals.
If pure platinum is found in placer deposits or other ores, it is isolated from them by various methods of subtracting impurities.
Because platinum is significantly denser than many of its impurities, the lighter impurities can be removed by simply floating them away in a liquid.
Platinum is paramagnetic , whereas nickel and iron are both ferromagnetic. These two impurities are thus removed by running an electromagnet over the mixture.
Because platinum has a higher melting point than most other substances, many impurities can be burned or melted away without melting the platinum.
Finally, platinum is resistant to hydrochloric and sulfuric acids, whereas other substances are readily attacked by them. Metal impurities can be removed by stirring the mixture in either of the two acids and recovering the remaining platinum.
One suitable method for purification for the raw platinum, which contains platinum, gold, and the other platinum-group metals, is to process it with aqua regia , in which palladium, gold and platinum are dissolved, whereas osmium, iridium, ruthenium and rhodium stay unreacted.
The gold is precipitated by the addition of iron II chloride and after filtering off the gold, the platinum is precipitated as ammonium chloroplatinate by the addition of ammonium chloride.
Ammonium chloroplatinate can be converted to platinum by heating. The remaining The most common use of platinum is as a catalyst in chemical reactions, often as platinum black.
It has been employed as a catalyst since the early 19th century, when platinum powder was used to catalyze the ignition of hydrogen.
Its most important application is in automobiles as a catalytic converter , which allows the complete combustion of low concentrations of unburned hydrocarbons from the exhaust into carbon dioxide and water vapor.
Platinum is also used in the petroleum industry as a catalyst in a number of separate processes, but especially in catalytic reforming of straight-run naphthas into higher-octane gasoline that becomes rich in aromatic compounds.
PtO 2 , also known as Adams' catalyst , is used as a hydrogenation catalyst, specifically for vegetable oils. From to , the meter was defined as the length of a platinum-iridium alloy bar, known as the international prototype of the meter.
The previous bar was made of platinum in Until May , the kilogram was defined as the mass of the international prototype of the kilogram , a cylinder of the same platinum-iridium alloy made in The resistance wire in the thermometer is made of pure platinum e.
The NIST manufactured the wires from platinum bar stock with a chemical purity of The standard hydrogen electrode also uses a platinized platinum electrode due to its corrosion resistance, and other attributes.
Coins, bars, and ingots are traded or collected. It is used for this purpose for its prestige and inherent bullion value. Jewellery trade publications advise jewellers to present minute surface scratches which they term patina as a desirable feature in attempt to enhance value of platinum products.
In watchmaking , Vacheron Constantin , Patek Philippe , Rolex , Breitling , and other companies use platinum for producing their limited edition watch series.
Watchmakers appreciate the unique properties of platinum, as it neither tarnishes nor wears out the latter quality relative to gold.
During periods of sustained economic stability and growth, the price of platinum tends to be as much as twice the price of gold, whereas during periods of economic uncertainty,  the price of platinum tends to decrease due to reduced industrial demand, falling below the price of gold.
Gold prices are more stable in slow economic times, as gold is considered a safe haven. Although gold is also used in industrial applications, especially in electronics due to its use as a conductor, its demand is not so driven by industrial uses.
In the 18th century, platinum's rarity made King Louis XV of France declare it the only metal fit for a king. Platinum is used as an alloying agent for various metal products, including fine wires, noncorrosive laboratory containers, medical instruments, dental prostheses, electrical contacts, and thermocouples.
Style Variations: bold - light - outlined - colorable. General Alchemy description Alchemy, which gained significant popularity in Medieval Europe, is the precursor to modern-day chemistry, philosophy and scientific method.
Alchemists performed experiments, attempting to turn base metals, such as lead, into gold. They sought to develop an elixir that would grant immortality or eternal life, as well as a cure-all medicinal panacea.
Though the symbols in this category relate to European alchemic practices, similar experiments and projects existed in the Indian subcontinent, the Far East, and the Islamic world.
Alchemists developed theories and method, as well as laboratory techniques, that would later develop into modern scientific practice.
Because only a few hundred tonnes are produced annually, it is a scarce material, and is highly valuable and is a major precious metal commodity.
Being a heavy metal, it leads to health issues upon exposure to its salts, but due to its corrosion resistance, it is not as toxic as some metals.
Compounds containing platinum, most notably cisplatin, are applied in chemotherapy against certain types of cancer. Graphical characteristics: Symmetric , Closed shape , Monochrome , Contains both straight and curved lines , Has no crossing lines.
Category: Alchemical Symbols. Platinum is part of the Mundane Elements group. Edit this symbol. Alchemical symbols, originally devised as part of alchemy, were used to denote some elements and some compounds until the 18th century.
We're doing our best to make sure our content is useful, accurate and safe. If you get any acid on your hands you will burn your skin.
Rub the jewelry against the stone. Lay out the black slate stone on an even surface. Gently rub the jewelry against the stone in a back-and-forth motion to create a line.
For example, if you're testing for platinum, silver, and gold, you'll draw 3 lines. Choose an inconspicuous part of the jewelry to rub against the stone.
The stone will scratch and damage a small section of the jewelry. Lay a towel down underneath the stone to protect your work surface from scratches.
Drop the acids on the different metal lines. Select an acid test from your kit and carefully drop a small amount of acid onto one of the drawn lines.
Make sure that you don't mix the different acids together or you'll affect your results. Most tests have acids specifically for silver.
However, you can also use an karat gold testing acid to identify pure or sterling silver. Observe the reaction of the acid. These reactions can take anywhere from a second to a minute.
If the line completely dissolves, the test fails. However, if your line doesn't dissolve, the metal is pure. If you use the karat gold acid test to test on silver, the line will turn a milky white color.
If you doubt your results, test the jewelry again to be sure. Method 3 of Use a silver testing solution on large, hardy pieces of jewelry.
Avoid using this acid on delicately decorated jewelry. The acid will corrode any part of the surface that it touches. If you purchased an acid scratch testing kit, use the silver testing solution included.
Otherwise, purchase the silver testing solution online or from a jewelry supply store. Test the jewelry. Drop a small amount of the silver testing solution onto the metal.
Choose a hidden area of the jewelry to test. For example, if you're testing a large cuff bracelet, drop some acid on the inside of the bracelet.
Alternatively, if you're testing a flat, chunky necklace, drop acid on the back of one of the necklace sections.
Wear gloves to protect your hands and work over a towel to protect your workspace. Don't drop acid on clasps or other important sections.
The acid may damage any smaller workings in the jewelry. Observe the reaction. The acid will appear dark brown or clear at first and then turn into a different color.
The new color will indicate the purity of the metal. If the solution turns white, the metal is Clean the acid from your jewelry.
Wipe off the acid with a clean cloth and throw it away. Rinse the jewelry under cold water to remove any residual acid.
Use a sieve or plug up your sink to avoid losing your jewelry down the drain. Allow the jewelry to completely air dry before wearing it again. Method 4 of Submerge the jewelry in hydrogen peroxide.
First, fill a glass bowl or cup with hydrogen peroxide. Next, drop the jewelry into the bowl.Platin ist ein chemisches Element im Periodensystem der Elemente mit dem Symbol. Platin ist ein chemisches Element mit dem Elementsymbol Pt und der Ordnungszahl Es besitzt eine hohe Dichte und ist ein kostbares, schmiedbares, dehnbares, grau-weißes Übergangsmetall. Es besitzt eine bemerkenswerte Korrosionsbeständigkeit und. Platin (Deutschland: [ˈplaːtiːn], Österreich: [ plaˈtiːn]) ist ein chemisches Element mit dem Elementsymbol Pt und der Ordnungszahl Es besitzt eine. File:Platinum-symbol festyvocal.com ist eine vektorisierte Version dieses Bildes. Diese sollte an Stelle des Rasterbildes verwendet werden, sofern sie nicht schlechter ist. This article provides a list of platinum stocks which have generated the highest returns in the year till date of writing. The list is prepared based on the percentage returns generated by the individual platinum stocks between the end of the previous and Dec 3, , and the top 10 return generating platinum stocks are listed below. Platinum is a chemical element with the symbol Pt and atomic number It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name is derived from the Spanish term platino, meaning "little silver". Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements. Platinum Symbol. Quote Reply # Jun 01 at PM Rating: Decent __DEL__ 12 posts. any one have a clue who drops this one? Page top. Post Comment. Platinum is a chemical element with the chemical symbol Pt and an atomic number of Its name is derived from the Spanish term platina, which is literally translated into "little silver". It is a dense, malleable, ductile, precious, gray-white transition metal. Platinum has six naturally occurring isotopes. Get the latest Platinum price (PL:NMX) as well as the latest futures prices and other commodity market news at Nasdaq. Bibcode : RSPT As is expected, tetracoordinate platinum II compounds tend to adopt electron square planar Lorenz Erdnüsse. Archived from the original on 25 January This started what is known as the "platinum age" in Spain. Description of Platinum The symbol consists of a crescent moon shape, inverted to face left. This shape is connected to an equally-sized unfilled circle, itself containing a significantly smaller circle. Platinum was thought, amongst alchemists, to be the combination of silver and gold. Find information for Platinum Futures Quotes provided by CME Group. View Quotes. Markets Home Active trader. Hear from active traders about their experience adding CME Group futures and options on futures to their portfolio. Find a broker. Search our directory for a broker that fits your needs. 3/31/ · Platinum Symbol. From Project Wiki. Jump to: navigation, search. Velious Era (added March) Platinum Symbol. MAGIC ITEM NO DROP WT: Size: TINY Class: ALL Race: ALL. Drops From. Temple of Veeshan. Essedera; Sold by. This item cannot be purchased from merchants. Related quests.