Peter Jacob Hjelm

Infobox_Scientist
name = Peter Jacob Hjelm


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caption = Peter Jacob Hjelm
birth_date = birth date|1746|10|2
birth_place = Sunnerbo Härad, Småland, Sweden
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death_date = death date and age|1813|10|7|1746|10|2
death_place = Stockholm, Sweden
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alma_mater = University of Uppsala,
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Peter Jacob Hjelm was a Swedisch chemist and the first person to isolate Molybdenum in 1781, four years after its discovery. [cite journal
author = P. J. Hjelm
title = Versuche mit Molybdäna, und Reduction der selben Erde
journal = svenska vetensk. Academ. Handlingar
pages = 268
year = 1788
volume = 49
issue =
url = http://dz1.gdz-cms.de/no_cache/dms/load/img/?IDDOC=168136
format = dead link|date=June 2008 – ^{[http://scholar.google.co.uk/scholar?hl=en&lr=&q=author%3A+intitle%3AVersuche+mit+Molybd%C3%A4na%2C+und+Reduction+der+selben+Erde&as_publication=svenska+vetensk.+Academ.+Handlingar&as_ylo=1788&as_yhi=1788&btnG=Search Scholar search]} ]

Life

After his studies at the University of Uppsala he received his Ph.D He became professor at the Mining academy and in 1782 he became head of the Royal Mint. From 1784 on he was head of the Royal Swedish Academy of Sciences. His last position was at the laboratory of the Ministry of Mining.

References

* [http://www.tableauperiodique.be/dispbiog_fr.cfm?ID=84 Short biography] (french)
*cite journal
journal= Berichte zur Wissenschaftsgeschichte
volume = 12
issue = 3
pages = 177–192
year = 1989
title = Deutsch-schwedische Wissenschaftsbeziehungen an der Universität Greifswald zwischen 1770 und 1850 unter besonderer Berücksichtigung von Chemie und Pharmazie
author = Christoph Friedrich
doi = 10.1002/bewi.19890120307