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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. File:Platinum-symbol slowfoodliege.site ist eine vektorisierte Version dieses Bildes. Diese sollte an Stelle des Rasterbildes verwendet werden, sofern sie nicht schlechter ist. slowfoodliege.site ( × Pixel, Dateigröße: 4 KB, MIME-Typ: image/png). Im Medienbetrachter öffnenKonfiguration. Perfekte Platinum Symbol Stock-Fotos und -Bilder sowie aktuelle Editorial-Aufnahmen von Getty Images. Download hochwertiger Bilder, die man nirgendwo. Suchen Sie nach Platinum Symbol-Stockbildern in HD und Millionen weiteren lizenzfreien Stockfotos, Illustrationen und Vektorgrafiken in der.
Suchen Sie nach Platinum Symbol Element Number 78 Periodic-Stockbildern in HD und Millionen weiteren lizenzfreien Stockfotos, Illustrationen und. 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. Wählen Sie aus "platinum Symbol" Stock-Fotos. Laden Sie Platinum Pt chemical element. Platinum Sign Platinum symbol on a glass square. Übertragen.
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 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. The price of platinum, like other industrial commodities, is more volatie.
It currently has a beta value of 1. 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.
Platinum-cobalt, an alloy of roughly three parts platinum and one part cobalt, is used to make relatively strong permanent magnets.
Platinum's rarity as a metal has caused advertisers to associate it with exclusivity and wealth. Platinum is considered a precious metal, although its use is not as common as the use of gold or silver.
It was the first British crown to be made of this particular metal. According to the Centers for Disease Control and Prevention , short-term exposure to platinum salts may cause irritation of the eyes, nose, and throat, and long-term exposure may cause both respiratory and skin allergies.
As platinum is a catalyst in the manufacture of the silicone rubber and gel components of several types of medical implants breast implants, joint replacement prosthetics, artificial lumbar discs, vascular access ports, etc.
The Food and Drug Administration and other institutions have reviewed the issue and found no evidence to suggest toxicity in vivo.
From Wikipedia, the free encyclopedia. This article is about the chemical element. For other uses, see Platinum disambiguation.
Chemical element with atomic number See also: Platinum group. Main article: Isotopes of platinum. Main articles: Platinum as an investment and Platinum coin.
See also: Platinum album and Platinum color. Chelated platinum Iron—platinum nanoparticle List of countries by platinum production Mixed metal oxide electrode Platinum group Platinum in Africa Platinum nanoparticle Platinum print s commodities boom.
Pure and Applied Chemistry. Online Etymology Dictionary. Retrieved 20 August Dalton Transactions. Chemistry Foundations and Applications.
Thomson Gale. Chaston, Platinum Metals Rev. Macmillan Journals Limited. Archived from the original on 24 March In Lide, David R.
January Handbook of corrosion data. Ammonium Hexachloroplatinate IV. Inorganic Syntheses. Angewandte Chemie International Edition. New Scientist.
Encyclopaedia of Occupational Health and Safety: Chemical, industries and occupations. International Labour Organization. ASTM International.
Alaska Community Database Online. Archived from the original on 22 December Retrieved 12 April Minerals Engineering.
Grant Cawthorn Platinum Metals Review. Retrieved 24 December Kirk Othmer Encyclopedia of Chemical Technology. New York Times. Archived from the original on 3 February Retrieved 9 September July Archived PDF from the original on 7 July Retrieved 17 July The Hindu.
Chennai, India. Archived from the original on 6 December Meteorites: flux with time and impact effects. Greenwood Press.
Journal of the American Chemical Society. Inorganic Chemistry. Handbook of Inorganic Compounds. Bibcode : Natur. Inorganica Chimica Acta.
Chemical Communications. The FTC is currently considering a request to allow manufacturers to mark jewelry as platinum even if it contains metals that are not part of the platinum group.
Acceptable alloys that are used with platinum are grouped together. Ask your jeweler to explain platinum content and markings if you are not sure which combination is the most suitable for your jewelry purchase.
Carly Wickell. She has a special interest in vintage jewelry. She contributed to The Spruce for over 11 years. Updated August 17, Here are some important platinum facts regarding content markings:.
Jewelry that contains at least parts per thousand of pure platinum may be marked or described as "Platinum". Platinum has six naturally occurring isotopes.
It is the least reactive metal. As a member of the platinum group of elements, as well as of the group 10 of the periodic table of elements, platinum is generally non-reactive.
It exhibits a remarkable resistance to corrosion, even at high temperatures, and as such is considered a noble metal. As a result, platinum is often found chemically uncombined as native platinum.
Because it occurs naturally in the alluvial sands of various rivers, it was first used by pre-Columbian South American natives to produce artifacts.
It was referenced in European writings as early as 16th century, but it was not until Antonio de Ulloa published a report on a new metal of Colombian origin in that it became investigated by scientists.
Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry.
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.Suchen Sie nach Platinum Symbol Element Number 78 Periodic-Stockbildern in HD und Millionen weiteren lizenzfreien Stockfotos, Illustrationen und. Wählen Sie aus "platinum Symbol" Stock-Fotos. Laden Sie Platinum Pt chemical element. Platinum Sign Platinum symbol on a glass square. Übertragen. Platinum: Symbol: Pt: Latin name: Platinium: Atomic number: Period: 6: Element category: Transition elements: Relative atomic mass: Group: VIII. Jetzt die Vektorgrafik Platinum Familie Symbol Set herunterladen. Und durchsuchen Sie die Bibliothek von iStock mit lizenzfreier Vektor-Art, die Monate. Bitcoin - Euro der Haftungsausschlüsse. Diese Crypto Broker dürfen daher nicht für kommerzielle, Werbe- Advertorial- oder Empfehlungszwecke verwendet werden. Gold and platinum are both precious metals that possess special qualities. Platinum Prices Updated Every Minute. Platinum ou platinium. File:Platinum-symbol 2. Note that … American Express Platinum You do not have to be nearly as much of a big spender to apply for the Platinum card. B: Platinum Symbol 2. However, collectible or rare Platinum products may carry a much higher premium over and above the value found in its raw metal weight. Welche Arten von lizenzfreien Dateien gibt es auf iStock? Unterstützt wird diese edle Ausstrahlung auch durch die charakteristische leichte Transparenz des Premium Bone Porcelains. Wie können Sie lizenzfreie Bilder und Videoclips nutzen? Klicke auf einen Zeitpunkt, um Hry Zdarma Version zu laden. Dieser neuartige Aktiv-Reinigungsschaum wirkt selbstständig und löst selbst die hartnäckigsten Verschmutzungen auf! File:Platinum-symbol 2. With Card Lock, some activity may continue, Beste Spielothek in Oberachdorf finden returns, credits, payments, interest, dispute adjustments, other account fees, purchase transactions during system downtime and certain other exempted transactions. Häufig gestellte Fragen Was ist eine lizenzfreie Lizenz? Titanium condenser tubes are usually the best technical Ambulanz FГјr Spielsucht, however titanium is very expensive material. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. Bibcode : SSSci Handbook of corrosion Beste Spielothek in Sagberg finden. With a standard atomic weight of circa 1. Business Insider 6 hrs ago. When hexachloroplatinic acid is heated, it decomposes through platinum IV chloride and platinum II chloride to elemental platinum, although the reactions do not Bitcoin Dash stepwise: . Platinum is often found chemically uncombined as native platinum and as alloy with the other platinum-group metals and iron mostly.