Environmental Chemistry
Comprehensive information for the element oxygen – o is provided by this page including scores of properties, element names in many languages, most known nuclides and technical terms are linked to their definitions.
http://environmentalchemistry.com/yogi/periodic/o.html
Int.Chemical Safety Cards
Int.Chemical Safety Cards
http://www.cdc.gov/niosh/ipcsndut/ndut0138.html
Ozon (zuurstof)
Ozon (zuurstof)
http://nl.wikipedia.org/wiki/ozon_(zuurstof)
Zuurstof - Wikipedia
Zuurstof - Wikipedia
http://nl.wikipedia.org/wiki/zuurstof