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Pure Platinum

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Lieblingspflege Bewertet von CookieMonster Preis. New Nike Air Max GS Kids Pure Platinum Pink Shoes AQ Size Y. $ Free shipping. PURE PLATINUM is a collection of artists that work together to utilize everyone's strong points and knowledge of the current trends and classics. The Nike Dunk Slam Jam delivers two colorways of the popular basketball model, this pair being titled “Pure Platinum”. A mix of materials are present on the sneaker’s upper, including leather, nubuck, and rubber. The Swoosh has a translucent gummy-like texture to match the translucent midsole. Pure Platinum® MC is a nonprofit organization that was formed to promote skilled motorcycle awareness and to serve as an advocate for motorcyclists on related issues and share camaraderie with other enthusiasts throughout the motorcycle community. Specialties: Every guest that arrives at Pure Platinum is treated as our VIP Guest. Our Hostess will meet and greet you in our lobby and one of our highly trained staff will escort you and your party to one of our main floor tables. You. Pure Platinum - Buy Platinum Jewellery Online in India with the latest jewellery designs from our online jewellery shopping store. Best Platinum Jewellery website for online jewellery shopping in India with Designer Rings, Chains, Bands, Kadas, Pendants, Earings and Bracelets. Pure Platinum offers the perfect balance of fitness, function and wellness classes weekly including strength and cardio, group fitness, group personal training, cycling, kickboxing, pilates, yoga, and meditation. So, go in with the thought that you’re going to accomplish something new . Pure platinum is a lustrous, ductile, and malleable, silver-white metal. Platinum is more ductile than gold, silver or copper, thus being the most ductile of pure metals, but it is less malleable than gold. The metal has excellent resistance to corrosion, is stable at . Werde bis zum Mitglied bei uns und trainiere nach Wiedereröffnung 6 Monate gratis. 44 mm Nike Sportarmband Pure Platinum/Schwarz - Regular. 47,75 €. Farbe - Pure Platinum/Schwarz. Spruce Aura/Vapor Green; Blue Black/Bright Mango. Many translated example sentences containing "pure platinum" – German-​English dictionary and search engine for German translations. Inhalt: 50 ml. Die ganzheitliche Tagespflege Pure Platinum ist speziell auf die Bedürfnisse von anspruchsvoller Haut ausgerichtet. Mit dezentem Duft und zarter​.
Pure Platinum
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Pure Platinum

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It has six naturally occurring isotopes. Because of its scarcity in Earth's crust, only a few hundred tonnes are produced annually, and given its important uses, it is highly valuable and is a major precious metal commodity.

Platinum is one of the least reactive metals. It has remarkable resistance to corrosion , even at high temperatures, and is therefore considered a noble metal.

Consequently, 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 began to be investigated by scientists.

Platinum is used in catalytic converters , laboratory equipment, electrical contacts and electrodes , platinum resistance thermometers , dentistry equipment, and jewelry.

Being a heavy metal , it leads to health problems upon exposure to its salts ; but due to its corrosion resistance, metallic platinum has not been linked to adverse health effects.

Pure platinum is a lustrous, ductile , and malleable , silver-white metal. Platinum is insoluble in hydrochloric and nitric acid , but dissolves in hot aqua regia A mixture of nitric and hydrochloric acids , to form chloroplatinic acid , H 2 PtCl 6.

Its physical characteristics and chemical stability make it useful for industrial applications. As is expected, tetracoordinate platinum II compounds tend to adopt electron square planar geometries.

Although elemental platinum is generally unreactive, it dissolves in hot aqua regia to give aqueous chloroplatinic acid H 2 PtCl 6 : [16].

As a soft acid , platinum has a great affinity for sulfur, such as on dimethyl sulfoxide DMSO ; numerous DMSO complexes have been reported and care should be taken in the choice of reaction solvent.

In , Gerhard Ertl won the Nobel Prize in Chemistry for determining the detailed molecular mechanisms of the catalytic oxidation of carbon monoxide over platinum catalytic converter.

The most abundant of these is Pt, comprising Of the naturally occurring isotopes, only Pt is unstable, though it decays with a half-life of 6.

Platinum also has 34 synthetic isotopes ranging in atomic mass from to , making the total number of known isotopes Most platinum isotopes decay by some combination of beta decay and alpha decay.

Platinum is an extremely rare metal, [20] occurring at a concentration of only 0. Platinum is often found chemically uncombined as native platinum and as alloy with the other platinum-group metals and iron mostly.

Most often the native platinum is found in secondary deposits in alluvial deposits. Another large alluvial deposit is in the Ural Mountains , Russia, and it is still mined.

In nickel and copper deposits, platinum-group metals occur as sulfides e. Pt,Pd S , tellurides e. PtBiTe , antimonides PdSb , and arsenides e.

PtAs 2 , and as end alloys with nickel or copper. Platinum arsenide, sperrylite PtAs 2 , is a major source of platinum associated with nickel ores in the Sudbury Basin deposit in Ontario , Canada.

The mine ceased operations in In , chromites were identified in the Bushveld region of South Africa, followed by the discovery of platinum in In the Sudbury Basin, the huge quantities of nickel ore processed make up for the fact platinum is present as only 0.

Smaller reserves can be found in the United States, [27] for example in the Absaroka Range in Montana. Large platinum deposits are present in the state of Tamil Nadu , India.

Platinum exists in higher abundances on the Moon and in meteorites. Correspondingly, platinum is found in slightly higher abundances at sites of bolide impact on Earth that are associated with resulting post-impact volcanism, and can be mined economically; the Sudbury Basin is one such example.

Hexachloroplatinic acid mentioned above is probably the most important platinum compound, as it serves as the precursor for many other platinum compounds.

By itself, it has various applications in photography, zinc etchings, indelible ink , plating, mirrors, porcelain coloring, and as a catalyst.

Treatment of hexachloroplatinic acid with an ammonium salt, such as ammonium chloride , gives ammonium hexachloroplatinate , [16] which is relatively insoluble in ammonium solutions.

Heating this ammonium salt in the presence of hydrogen reduces it to elemental platinum. Potassium hexachloroplatinate is similarly insoluble, and hexachloroplatinic acid has been used in the determination of potassium ions by gravimetry.

When hexachloroplatinic acid is heated, it decomposes through platinum IV chloride and platinum II chloride to elemental platinum, although the reactions do not occur stepwise: [34].

All three reactions are reversible. Platinum II and platinum IV bromides are known as well. Platinum hexafluoride is a strong oxidizer capable of oxidizing oxygen.

Platinum IV oxide , PtO 2 , also known as ' Adams' catalyst ', is a black powder that is soluble in potassium hydroxide KOH solutions and concentrated acids.

Unlike palladium acetate , platinum II acetate is not commercially available. Where a base is desired, the halides have been used in conjunction with sodium acetate.

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, [53] 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.

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Email Address:. Sign me up! Pure Platinum Ft Lauderdale. Share this: Facebook Twitter Email Print. Platinum is also extremely dense. This density has made it a favorite among those who appreciate the feel of a weightier piece of jewelry.

When compared with the gold alloys commonly used in jewelry, platinum contains a higher concentration of its elemental metal. Pure gold is known as 24K, but is much too soft and malleable to be worn in most jewelry, so it must be alloyed with other metals.

White or yellow 14K gold contains only

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Pure Platinum Journal of Professional Services Marketing. Because of its high boiling point, and its resistance to water, air and many acids, platinum is used primarily to manufacture automotive catalytic converters, in the chemical and electrical industry and in petroleum refineries. New York Times. It has six naturally occurring isotopes. Kalbsnuss Preis, Platinum Metals Rev. Inafter studying the Empfohlen.De Erfahrungen sent to him Pure Platinum Wood, Brownrigg presented a detailed account of the metal Casino Ohne Android Einzahlung - Astrologie Náchod the Royal Societystating that he had seen no mention of it in Adelshof Die Stämme previous accounts of known minerals. Bibcode : Natur. As a soft acidplatinum has a great affinity for sulfur, such as on dimethyl sulfoxide DMSO ; numerous DMSO complexes have been reported and care should be taken in the choice of reaction solvent. Versuche mit dem neuen mineralischen Körper Löwen Play Casino del pinto genannt. Spectral lines of platinum. Retrieved 12 April Lieferung: Bitte bestätigen Sie durch anklicken dieser Checkbox, dass Sie unsere Datenschutzhinweise gelesen haben. Artikel ist Tippspiele Kostenlos Ihrem Einkaufswagen.
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