Sulphur: Difference between revisions
Jump to navigation
Jump to search
Created page with " Sulphur is found in the amino acids methionine and cysteine. In cysteine the -SH group reacts with another -SH group on a different cysteine forming a disulphide bond. <ref..." |
No edit summary |
||
| (10 intermediate revisions by 5 users not shown) | |||
| Line 1: | Line 1: | ||
| [[Image:Sulphur Lumps 99 98 .jpg|right|148x111px|lumps of sulphur]]Sulphur is represented by the symbol 'S' in the [[Periodic table|periodic table]] and has an [[Atomic number|atomic number]] of 16 and a standard relative [[Atomic mass|atomic mass]] of 32.065<ref>NIST. Sulfur. 2016 [cited 03/12/16]; Available from: http://webbook.nist.gov/cgi/cbook.cgi?ID=C7704349&amp;amp;amp;amp;Mask=40</ref>. The name may have been derived from the Arabic ‘sufra’ meaning yellow, or the Sanskrit ‘shulbari’ meaning enemy (ari) of [[Copper|copper]] (shulba)<ref>G. Eggert, M. Weichert, H. Euler, B. Barbier, Some news about Black Spots., 2004, Proceedings of Metal, p142 (pdf download).</ref>. It is a naturally occuring element which is frequently found and regarded as an essential element for life. It is found in the [[Amino acid|amino acids]] [[Methionine|methionine]] and [[Cysteine|cysteine]]. In [[Cysteine|cysteine]] the - [[SH group|SH group]] reacts with another -SH group on a different cysteine forming a [[Disulphide bond|disulphide bond]] <ref>Berg J.,Tymoczko J. and Stryer L. (2012) Biochemistry. 7th edition, Basinstoke: Freeman.</ref> | ||
When combined with [[Oxygen|oxygen]], sulphur can form a [[Dioxide|dioxide]] or [[Trioxide|trioxide]]. | |||
=== References === | |||
<references /> | <references /> | ||
Latest revision as of 15:46, 4 December 2016
Sulphur is represented by the symbol 'S' in the periodic table and has an atomic number of 16 and a standard relative atomic mass of 32.065[1]. The name may have been derived from the Arabic ‘sufra’ meaning yellow, or the Sanskrit ‘shulbari’ meaning enemy (ari) of copper (shulba)[2]. It is a naturally occuring element which is frequently found and regarded as an essential element for life. It is found in the amino acids methionine and cysteine. In cysteine the - SH group reacts with another -SH group on a different cysteine forming a disulphide bond [3]
When combined with oxygen, sulphur can form a dioxide or trioxide.
References
- ↑ NIST. Sulfur. 2016 [cited 03/12/16]; Available from: http://webbook.nist.gov/cgi/cbook.cgi?ID=C7704349&amp;amp;amp;Mask=40
- ↑ G. Eggert, M. Weichert, H. Euler, B. Barbier, Some news about Black Spots., 2004, Proceedings of Metal, p142 (pdf download).
- ↑ Berg J.,Tymoczko J. and Stryer L. (2012) Biochemistry. 7th edition, Basinstoke: Freeman.