| 词条 | Masataka Ogawa |
| 释义 |
|name = Masataka Ogawa |image = Masataka Ogawa.jpg |image_size = 200px |caption = |birth_date = {{Birth date|df=yes|1865|2|21}} |death_date = {{Death date and age|df=yes|1930|7|11|1865|2|21}} |birth_place = |death_place = |nationality = {{flag|Japan}} |field = Chemistry | notable_students = |prizes = }}{{nihongo|Masataka Ogawa|小川 正孝|Ogawa Masataka|extra=21 February 1865 – 11 July 1930[1]}} was a Japanese chemist known for the discovery of rhenium, which he named nipponium. After graduating from the University of Tokyo, he studied under William Ramsay in London, where he worked on the analysis of the rare mineral thorianite. He extracted and isolated a small amount of an apparently unknown substance from the mineral, which he announced as the discovery of element 43, naming the newly discovered element nipponium. He published his results in 1909 and a notice was also published in the Journal of the American Chemical Society.[2] For this work, he was awarded a doctorate and the highest prize of the Tokyo Chemical Society. However, no other researchers were able to replicate his discovery, and the announcement was forgotten.[3] Recent research has indicated that whilst he did not identify element 43 (finally isolated in 1937 by an Italian group), he had apparently isolated element 75, rhenium, which was not otherwise successfully identified until 1925.[4] Ogawa served as president of Tohoku University between 1919 and 1928.[5] While the name nipponium could not be reused for another element, element 113 was also discovered by a team of Japanese scientists and is now named nihonium, also after Japan. The name was chosen in respectful homage to Ogawa's work.[6] References1. ^幻の元素「ニッポニウム」を発見 小川正孝|日本の世界一{{dead link|date=January 2018 |bot=InternetArchiveBot |fix-attempted=yes }} {{Authority control}}{{DEFAULTSORT:Ogawa, Masataka}}2. ^{{cite journal |last=Howe |first=J. S. |year=1909 |title=Recent Work in Inorganic Chemistry |journal=Journal of the American Chemical Society |volume=31 |issue=12 |pages=1284–1305 |doi=10.1021/ja01942a006}} 3. ^{{cite web |last=Kaji |first=M. |date= |title=A discovery which served as a foothold |work=St. Petersburg: Through Centuries |url=http://www.300.years.spb.ru/eng/3_spb_3.html?id=22 |accessdate=2016-03-11}} 4. ^{{cite journal |last=Yoshihara |first=H. K. |year=2004 |title=Discovery of a new element 'nipponium': re-evaluation of pioneering works of Masataka Ogawa and his son Eijiro Ogawa |journal=Spectrochimica Acta Part B |volume=59 |issue=8 |pages=1305–1310 |bibcode=2004AcSpe..59.1305Y |doi=10.1016/j.sab.2003.12.027}} 5. ^Tohoku University page 6. ^{{cite journal |last1=Öhrström |first1=Lars |last2=Reedijk |first2=Jan |date=28 November 2016 |title=Names and symbols of the elements with atomic numbers 113, 115, 117 and 118 (IUPAC Recommendations 2016) |url=https://www.degruyter.com/downloadpdf/j/pac.2016.88.issue-12/pac-2016-0501/pac-2016-0501.pdf |journal=Pure Appl. Chem. |volume=88 |issue=12 |pages=1225–1229 |doi=10.1515/pac-2016-0501 |access-date=22 April 2017}} 12 : Japanese chemists|1865 births|1930 deaths|Discoverers of chemical elements|Tohoku University|19th-century Japanese people|19th-century chemists|20th-century Japanese people|20th-century chemists|Rhenium|19th-century Japanese scientists|20th-century Japanese scientists |
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