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.
Platinum-cobalt, an alloy of roughly three parts platinum and one part cobalt, is used to make relatively strong permanent magnets.
Platinum is considered a precious metal, although its use is not as common as the use of gold or silver.
 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.
 Unprecipitated hexachloroplatinate(IV) may be reduced with elemental zinc, and a similar method is suitable for small scale recovery of platinum from laboratory residues.
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.
 The platinum used in such objects was not the pure element, but rather a naturally occurring mixture of the platinum group metals, with small amounts of palladium,
rhodium, and iridium.
 Catalyst The most common use of platinum is as a catalyst in chemical reactions, often as platinum black.
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.
 • 1,000 cubic centimeters of 99.9% pure platinum, worth about US$696,000 at 29 Jun 2016 prices • Platinum price 1970-2022 Other uses In the laboratory, platinum
wire is used for electrodes; platinum pans and supports are used in thermogravimetric analysis because of the stringent requirements of chemical inertness upon heating to high temperatures (~1000 °C).
Time trend of platinum production Platinum, along with the rest of the platinum-group metals, is obtained commercially as a by-product from nickel and copper mining and
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.
The resulting gold–platinum alloy would then be soft enough to shape with tools.
 From their first encounters with platinum, the Spanish generally saw the metal as a kind of impurity in gold, and it was treated as such.
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.
 The metal was used by pre-Columbian Americans near modern-day Esmeraldas, Ecuador to produce artifacts of a white gold-platinum alloy.
The alluvial deposits used by pre-Columbian people in the Chocó Department, Colombia are still a source for platinum-group metals.
Platinum is often found chemically uncombined as native platinum and as alloy with the other platinum-group metals and iron mostly.
Platinum also has 34 synthetic isotopes ranging in atomic mass from 165 to 204, making the total number of known isotopes 40.
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
 Platinum is one of the least reactive metals.
Chabeneau realized the infusibility of platinum would lend value to objects made of it, and so started a business with Joaquín Cabezas producing platinum ingots and utensils.
 Pure platinum is less expensive than pure gold, having been so continuously since 2015.
Chemical See also: Platinum group Platinum being dissolved in hot aqua regia Platinum has excellent resistance to corrosion.
 To work the metal, they would combine gold and platinum powders by sintering.
Platinum finds use in jewellery, usually as a 90–95% alloy, due to its inertness.
It has been employed as a catalyst since the early 19th century, when platinum powder was used to catalyze the ignition of hydrogen.
Consequently, platinum is often found chemically uncombined as native platinum.
 Brownrigg also made note of platinum’s extremely high melting point and refractoriness toward borax.
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 1752, 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.
After several months, Chabaneau succeeded in producing 23 kilograms of pure, malleable platinum by hammering and compressing the sponge form while white-hot.
Chabaneau succeeded in removing various impurities from the ore, including gold, mercury, lead, copper, and iron.
 Platinum also exhibits negative oxidation states at surfaces reduced electrochemically.
 Compounds Halides Hexachloroplatinic acid mentioned above is probably the most important platinum compound, as it serves as the precursor for many other platinum
Of the naturally occurring isotopes, only 190 Pt is unstable, though it decays with a half-life of 6.5×1011 years, causing an activity of 15 Bq/kg of natural platinum.
In 1750, 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.
It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal.
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.
The resistance wire in the thermometer is made of pure platinum (NIST manufactured the wires from platinum bar stock with a chemical purity of 99.999% by weight).
Because platinum has a higher melting point than most other substances, many impurities can be burned or melted away without melting the platinum.
South Africa accounts for 80% of global platinum production and a majority of the world’s known platinum deposits.
 They are platinum compounds, not the metal itself.
Bulk platinum does not oxidize in air at any temperature, but it forms a thin surface film of PtO2 that can be easily by removed by heating to about 400 °C.
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.
 The use of platinum(II) acetylacetonate has also been reported.
As 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.
 Symbol of prestige in marketing See also: Platinum album and Platinum (color) Platinum’s rarity as a metal has caused advertisers to associate it with exclusivity
Scheffer described platinum as being less pliable than gold, but with similar resistance to corrosion.
 Several barium platinides have been synthesized in which platinum exhibits negative oxidation states ranging from −1 to −2.
The specific layer he found, named the Merensky Reef, contains around 75% of the world’s known platinum.
 The misunderstanding is created by healthcare workers who are using inappropriately the name of the metal as a slang term for platinum-based chemotherapy medications
Until May 2019, the kilogram was defined as the mass of the international prototype of the kilogram, a cylinder of the same platinum-iridium alloy made in 1879.
The standard hydrogen electrode also uses a platinized platinum electrode due to its corrosion resistance, and other attributes.
It occurs in some nickel and copper ores along with some native deposits, mostly in South Africa, which accounts for 80% of the world production.
 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 +1 and +3 oxidation states are less common, and are often stabilized by metal bonding in bimetallic (or polymetallic) species.
[‘1. “Standard Atomic Weights: Platinum”. CIAAW. 2005.
2. ^ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
3. ^ “platinum (Pt)”. Archived 5 April
2012 at the Wayback Machine Encyclopædia Britannica. Encyclopædia Britannica Inc., 2012. 24 April 2012
4. ^ Harper, Douglas. “platinum”. Online Etymology Dictionary.
5. ^ Hobson, Peter. “Currency shocks knock platinum to 10-year lows”. Reuters.
Retrieved 20 August 2018.
6. ^ “Platinum in the Glass Industry”. Johnson Matthey Technology Review.
7. ^ “Chapter 6.11 Platinum” (PDF), Air Quality Guidelines (2nd ed.), WHO Regional Office for Europe, Copenhagen, Denmark, 2000, archived (PDF)
from the original on 18 October 2012
8. ^ Wheate, N. J.; Walker, S.; Craig, G. E.; Oun, R. (2010). “The status of platinum anticancer drugs in the clinic and in clinical trials” (PDF). Dalton Transactions. 39 (35): 8113–27. doi:10.1039/C0DT00292E.
hdl:2123/14271. PMID 20593091.
9. ^ “Platinum Prices vs Gold Prices”.
10. ^ “Live latinum Price Charts & Historical Data”. APMEX. Retrieved 14 March 2021.
11. ^ Jump up to:a b Lagowski, J. J., ed. (2004). Chemistry Foundations and Applications.
Vol. 3. Thomson Gale. pp. 267–268. ISBN 978-0-02-865724-0.
12. ^ Schwartz, M. (2002). Encyclopedia and Handbook of Materials, Parts and Finishes (2nd ed.). CRC Press. ISBN 9781420017168.
13. ^ Vaccari, J.A.; Clauser, H.R.; Brady, G.S. (2002).
Materials handbook: an encyclopedia for managers, technical professionals, purchasing and production managers, technicians, and supervisors (15th ed.). McGraw-Hill. ISBN 9780071360760.
14. ^ Craig, Bruce D; Anderson, David S; International, A.S.M.
(January 1995). “Platinum”. Handbook of corrosion data. pp. 8–9. ISBN 978-0-87170-518-1. Archived from the original on 24 March 2017.
15. ^ Chaston, J.C. “Reaction of Oxygen with the Platinum Metals”. technology.matthey.com. Retrieved 30 July 2022.
Brewer, Leo (1953). “Thermodynamic Properties of the Oxides and their Vaporization Processes”. Chemical Reviews. 53: 1–75. Retrieved 30 July 2022.
17. ^ Sir Norman Lockyer (1891). Nature. Macmillan Journals Limited. pp. 625–. Archived from the original
on 24 March 2017.
18. ^ Jump up to:a b Kauffman, George B.; Thurner, Joseph J.; Zatko, David A. (1967). Ammonium Hexachloroplatinate(IV). Inorganic Syntheses. Vol. 9. pp. 182–185. doi:10.1002/9780470132401.ch51. ISBN 978-0-470-13240-1.
19. ^ Jump
up to:a b c CRC contributors (2007–2008). “Platinum”. In Lide, David R. (ed.). CRC Handbook of Chemistry and Physics. Vol. 4. New York: CRC Press. p. 26. ISBN 978-0-8493-0488-0.
20. ^ Jump up to:a b c Han, Y.; Huynh, H. V.; Tan, G. K. (2007). “Mono-
vs Bis(carbene) Complexes: A Detailed Study on Platinum(II)−Benzimidazolin-2-ylidenes”. Organometallics. 26 (18): 4612–4617. doi:10.1021/om700543p.
21. ^ Ertl, Gerhard (2008). “Reactions at Surfaces: From Atoms to Complexity (Nobel Lecture)”. Angewandte
Chemie International Edition. 47 (19): 385–407. doi:10.1002/anie.200800480. PMID 18357601.
22. ^ Audi, Georges; Bersillon, Olivier; Blachot, Jean; Wapstra, Aaldert Hendrik (2003), “The NUBASE evaluation of nuclear and decay properties”, Nuclear
Physics A, 729: 3–128, Bibcode:2003NuPhA.729….3A, doi:10.1016/j.nuclphysa.2003.11.001
23. ^ Cohen, D. (23 May 2007). “Earth’s natural wealth: an audit”. New Scientist. doi:10.1016/S0262-4079(07)61315-3.
24. ^ Stellman, Jeanne Mager (1998).
Encyclopaedia of Occupational Health and Safety: Chemical, industries and occupations. International Labour Organization. p. 141. ISBN 978-92-2-109816-4. Archived from the original on 24 March 2017.
25. ^ Murata, K. J. (1958). in Symposium on Spectrocemical
Analysis for Trace Elements. ASTM International. p. 71. Archived from the original on 24 March 2017.
26. ^ “The History of Platinum”. Alaska Community Database Online. ExploreNorth. Archived from the original on 22 December 2010. Retrieved 12 April
2011. Platinum is located on the Bering Sea coast, below Red Mountain on the south spit of Goodnews Bay.
27. ^ Xiao, Z.; Laplante, A. R. (2004). “Characterizing and recovering the platinum group minerals—a review”. Minerals Engineering. 17 (9–10):
28. ^ Dan Oancea Platinum In South Africa Archived 13 August 2011 at the Wayback Machine. MINING.com. September 2008
29. ^ R. Grant Cawthorn (1999). “Seventy-fifth Anniversary of the Discovery of the
Platiniferous Merensky Reef”. Platinum Metals Review. Retrieved 24 December 2017.
30. ^ Jump up to:a b Seymour, R. J.; O’Farrelly, J. I. (2001). “Platinum-group metals”. Kirk Othmer Encyclopedia of Chemical Technology. Wiley. doi:10.1002/0471238961.1612012019052513.a01.pub2.
31. ^ “Mining Platinum in Montana”. New York Times. 13 August 1998. Archived from the original on 3 February 2008. Retrieved 9 September 2008.
32. ^ Loferski, P. J. (July 2012). “Platinum–Group Metals” (PDF). USGS Mineral
Resources Program. Archived (PDF) from the original on 7 July 2012. Retrieved 17 July 2012.
33. ^ “Evidence of huge deposits of platinum in State”. The Hindu. Chennai, India. 2 July 2010. Archived from the original on 6 December 2011.
34. ^ Koeberl,
Christian (1998). “Identification of meteoritic components in imactites”. Meteorites: flux with time and impact effects. pp. 133–155. ISBN 978-1-86239-017-1. Archived from the original on 24 March 2017.
35. ^ Jump up to:a b c Krebs, Robert E. (1998).
“Platinum”. The History and Use of our Earth’s Chemical Elements. Greenwood Press. pp. 124–127. ISBN 978-0-313-30123-0.
36. ^ Smith, G. F.; Gring, J. L. (1933). “The Separation and Determination of the Alkali Metals Using Perchloric Acid. V. Perchloric
Acid and Chloroplatinic Acid in the Determination of Small Amounts of Potassium in the Presence of Large Amounts of Sodium”. Journal of the American Chemical Society. 55 (10): 3957–3961. doi:10.1021/ja01337a007.
37. ^ Schweizer, A. E.; Kerr, G.
T. (1978). “Thermal Decomposition of Hexachloroplatinic Acid”. Inorganic Chemistry. 17 (8): 2326–2327. doi:10.1021/ic50186a067.
38. ^ Perry, D. L. (1995). Handbook of Inorganic Compounds. Nature. Vol. 177. pp. 296–298. Bibcode:1956Natur.177..639..
doi:10.1038/177639a0. ISBN 978-0-8493-8671-8. S2CID 4184615.
39. ^ Ahrens, Sebastian; Strassner, Thomas (2006). “Detour-free synthesis of platinum-bis-NHC chloride complexes, their structure and catalytic activity in the CH activation of methane”.
Inorganica Chimica Acta. 359 (15): 4789–4796. doi:10.1016/j.ica.2006.05.042.
40. ^ Karpov, Andrey; Konuma, Mitsuharu; Jansen, Martin (2006). “An experimental proof for negative oxidation states of platinum: ESCA-measurements on barium platinides”.
Chemical Communications. 44 (8): 838–840. doi:10.1039/b514631c. PMID 16479284.
41. ^ Karpov, Andrey; Nuss, Jürgen; Wedig, Ulrich; Jansen, Martin (2003). “Cs2Pt: A Platinide(-II) Exhibiting Complete Charge Separation”. Angewandte Chemie International
Edition. 42 (39): 4818–21. doi:10.1002/anie.200352314. PMID 14562358.
42. ^ Jump up to:a b Jansen, Martin (2005). “Effects of relativistic motion of electrons on the chemistry of gold and platinum”. Solid State Sciences. 7 (12): 1464–74. Bibcode:2005SSSci…7.1464J.
43. ^ Ghilane, J.; Lagrost, C.; Guilloux-Viry, M.; Simonet, J.; et al. (2007). “Spectroscopic Evidence of Platinum Negative Oxidation States at Electrochemically Reduced Surfaces”. Journal of Physical
Chemistry C. 111 (15): 5701–7. doi:10.1021/jp068879d.
44. ^ Gunther, M. (13 June 2016). “Oxidation state +10 may exist in a platinum compound”. Chemistry World.
Yu, H.S.; Truhlar, D.G. (2016). “Oxidation State 10 Exists”. Angew. Chem. Int. Ed.
55 (31): 9004–6. doi:10.1002/anie.201604670. PMID 27273799.
45. ^ Riddell, Imogen A.; Lippard, Stephen J. (2018). “Cisplatin and Oxaliplatin:Our Current Understanding of Their Actions”. In Sigel, Astrid; Sigel, Helmut; Freisinger, Eva; Sigel, Roland
K. O. (eds.). Metallo-Drugs:Development and Action of Anticancer Agents. Metal Ions in Life Sciences. Vol. 18. pp. 1–42. doi:10.1515/9783110470734-007. ISBN 978-3-11-046984-4. PMID 29394020.
46. ^ Richards, A. D.; Rodger, A. (2007). “Synthetic metallomolecules
as agents for the control of DNA structure” (PDF). Chemical Society Reviews. 36 (3): 471–483. doi:10.1039/b609495c. PMID 17325786.
47. ^ Carinder, James A.; Morrison, Pilar M.; Morrison, David G.; Jack E. Saux III (7 July 2014). Practical Oncology
Protocols. Mill City Press, Incorporated. p. 22. ISBN 978-1-62652-816-1. Archived from the original on 9 November 2017. Retrieved 11 June 2016.
48. ^ Taguchi, Takashi; Nazneen, Arifa; Abid, M. Ruhul; Razzaque, Mohammed S. (2005). Cisplatin-Associated
Nephrotoxicity and Pathological Events. Contributions to Nephrology. Vol. 148. pp. 107–121. doi:10.1159/000086055. ISBN 978-3-8055-7858-5. PMID 15912030. S2CID 24509477.
49. ^ Berthelot, M. (1901). “Sur les métaux égyptiens: Présence du platine
parmi les caractères d’inscriptions hiéroglyphiques, confié à mon examn” [On Egyptian metals: Presence of platinum among the characters of hieroglyphic inscriptions, entrusted to my examination]. Comptes rendus de l’Académie des Sciences (in French).
50. ^ Rayner W. Hesse (2007). Jewelrymaking Through History: An Encyclopedia. Greenwood Publishing Group. pp. 155–6. ISBN 978-0-313-33507-5.
51. ^ Ogden, Jack M. (1976). “The So-Called ‘Platinum’ Inclusions in Egyptian Goldwork”. The
Journal of Egyptian Archaeology. SAGE Publications. 62 (1): 138–144. doi:10.1177/030751337606200116. ISSN 0307-5133. S2CID 192364303.
52. ^ David A. Scott and Warwick Bray (1980). “Ancient Platinum Technology in South America: Its use by the Indians
in Pre-Hispanic Times”. Platinum Metals Review. Retrieved 5 November 2018.
53. ^ Bergsøe, Paul (1936). “Metallurgy of Gold and Platinum among the Pre-Columbian Indians”. Nature. Springer Science and Business Media LLC. 137 (3453): 29. Bibcode:1936Natur.137…29B.
doi:10.1038/137029a0. ISSN 0028-0836. S2CID 4100269.
54. ^ Meeks, N.; La Niece, S.; Estevez, P. (2002). “The technology of early platinum plating: a gold mask of the La Tolita culture, Ecuador”. Archaeometry. Wiley. 44 (2): 273–284. doi:10.1111/1475-4754.t01-1-00059.
55. ^ Jump up to:a b Donald McDonald, Leslie B. Hunt (1982). A History of Platinum and its Allied Metals. Johnson Matthey Plc. pp. 7–8. ISBN 978-0-905118-83-3.
56. ^ Jump up to:a b c d e Weeks, M. E. (1968). Discovery of the Elements
(7th ed.). Journal of Chemical Education. pp. 385–407. ISBN 978-0-8486-8579-9. OCLC 23991202.
57. ^ Dixon, Joshua; Brownrigg, William (1801). The literary life of William Brownrigg. To which are added an account of the coal mines near Whitehaven:
And Observations on the means of preventing epidemic fevers. p. 52. Archived from the original on 24 March 2017.
58. ^ Watson, Wm; Brownrigg, William (1749). “Several Papers concerning a New Semi-Metal, Called Platina; Communicated to the Royal
Society by Mr. Wm. Watson F. R. S”. Philosophical Transactions. 46 (491–496): 584–596. Bibcode:1749RSPT…46..584W. doi:10.1098/rstl.1749.0110. S2CID 186213277.
59. ^ Marggraf, Andreas Sigismund (1760). Versuche mit dem neuen mineralischen Körper
Platina del pinto genannt. Archived from the original on 24 March 2017.
60. ^ Platinum Archived 22 December 2011 at the Wayback Machine. mysite.du.edu
61. ^ Kelly, Thomas D. and Matos, Grecia R. (2013)Historical Statistics for Mineral and Material
Commodities in the United States Archived 4 June 2013 at the Wayback Machine, U.S. Geological Survey
62. ^ Loferski, P. J. (October 2011). “2010 Minerals Yearbook; Platinum-group metals” (PDF). USGS Mineral Resources Program. Archived (PDF) from
the original on 8 July 2012. Retrieved 17 July 2012.
63. ^ Heiserman, David L. (1992). Exploring Chemical Elements and their Compounds. TAB Books. pp. 272–4. ISBN 978-0-8306-3018-9.
64. ^ Hunt, L. B.; Lever, F. M. (1969). “Platinum Metals: A Survey
of Productive Resources to industrial Uses” (PDF). Platinum Metals Review. 13 (4): 126–138. Archived (PDF) from the original on 29 October 2008.
65. ^ Kauffman, George B.; Teter, Larry A. & Rhoda, Richard N. (1963). Recovery of Platinum from Laboratory
Residues. Inorg. Synth. Inorganic Syntheses. Vol. 7. pp. 232–6. doi:10.1002/9780470132388.ch61. ISBN 978-0-470-13238-8.
66. ^ Cairncross, E. (March 2014). “Health and environmental impacts of platinum mining: Report from South Africa” (PDF). Archived
(PDF) from the original on 5 October 2016. Retrieved 4 October 2016.
67. ^ Loferski, P. J. (July 2016). “2014 Minerals Yearbook; Platinum-group metals” (PDF). USGS Mineral Resources Program. Archived (PDF) from the original on 18 August 2016. Retrieved
11 July 2016.
68. ^ Petrucci, Ralph H. (2007). General Chemistry: Principles & Modern Applications (9th ed.). Prentice Hall. p. 606. ISBN 978-0-13-149330-8.
69. ^ Laramie, James; Dicks, Andrew (2003). Fuel Cell System Explained. John Wiley & Sons
Ltd. ISBN 978-0-470-84857-9.
70. ^ Wang, C.; Daimon, H.; Onodera, T.; Koda, T.; Sun, S. (2008). “A general approach to the size- and shape-controlled synthesis of platinum nanoparticles and their catalytic reduction of oxygen”. Angewandte Chemie
International Edition. 47 (19): 3588–91. doi:10.1002/anie.200800073. PMID 18399516.
71. ^ Gupta, S. V. (2010). “Chapter 4. Metre Convention and Evolution of Base Units”. Units of Measurement. Springer Series in Materials Science. Vol. 122. p. 47.
doi:10.1007/978-3-642-00738-5_4. ISBN 978-3-642-00777-4. S2CID 150519250.
72. ^ “Guide to the Realization of the ITS-90 – Platinum Resistance Thermometry” (PDF). International Committee for Weights and Measures. Archived from the original (PDF)
on 24 February 2021. Retrieved 23 October 2020.
73. ^ “Standard Reference Material 1750:Standard Platinum Resistance Thermometers,13.8033 K to 429.7485 K” (PDF). NIST.
74. ^ Feltham, A. M.; Spiro, Michael (1971). “Platinized platinum electrodes”.
Chemical Reviews. 71 (2): 177–193. doi:10.1021/cr60270a002.
75. ^ “Professional Jeweler’s Magazine Archives, issue of August 2004”. Archived from the original on 28 September 2011. Retrieved 19 June 2011.
76. ^ “Platinum primer”. Diamond Cutters
International. 12 December 2008. Archived from the original on 27 September 2011. Retrieved 18 June 2011.
77. ^ “Unknown Facts about Platinum”. watches.infoniac.com. Archived from the original on 21 September 2008. Retrieved 9 September 2008.
“Platinum versus Gold”. The Speculative Invertor. 14 April 2002. Archived from the original on 26 October 2008.
79. ^ “Platinum”. Minerals Zone. Archived from the original on 12 October 2008. Retrieved 9 September 2008.
80. ^ “21.09kg Pt”. WolframAlpha.
Archived from the original on 23 August 2014. Retrieved 14 July 2012.
81. ^ Apps, Michael G; Choi, Eugene H Y; Wheate, Nial J (August 2015). “The state-of-play and future of platinum drugs”. Endocrine-Related Cancer. Society for Endocrinology. 22
(4): R219–R233. doi:10.1530/ERC-15-0237. PMID 26113607.
82. ^ Gwin, John (1986). “Pricing Financial Institution Products”. Journal of Professional Services Marketing. 1 (3): 91–99. doi:10.1300/J090v01n03_07.
83. ^ Crouse, Richard (1 May 2000).
Big Bang Baby: The Rock Trivia Book. p. 126. ISBN 978-0-88882-219-2. Archived from the original on 24 March 2017.
84. ^ Gauding, Madonna (6 October 2009). The Signs and Symbols Bible: The Definitive Guide to Mysterious Markings. ISBN 978-1-4027-7004-3.
Archived from the original on 24 March 2017.
85. ^ “Occupational Health Guideline for Soluble Platinum Salts (as Platinum)” (PDF). Centers for Disease Control and Prevention. Archived (PDF) from the original on 11 March 2010. Retrieved 9 September
86. ^ “CDC – NIOSH Pocket Guide to Chemical Hazards – Platinum”. www.cdc.gov. Archived from the original on 21 November 2015. Retrieved 21 November 2015.
87. ^ “FDA Backgrounder on Platinum in Silicone Breast Implants”. U.S. Food and Drug
Administration. Archived from the original on 24 July 2008. Retrieved 9 September 2008.
88. ^ Brook, Michael (2006). “Platinum in silicone breast implants”. Biomaterials. 27 (17): 3274–86. doi:10.1016/j.biomaterials.2006.01.027. PMID 16483647.
“187 Fake Cancer ‘Cures’ Consumers Should Avoid”. U.S. Food and Drug Administration. Archived from the original on 2 May 2017. Retrieved 20 May 2020.
Photo credit: https://www.flickr.com/photos/nadya/326541992/’]