Recognized as an element by A. Crawford at Edinburgh, Scotland. Isolated in 1808 by Sir Humphry Davy at London, UK.
Silvery shiny, soft metal obtained by high temperature reduction of SrO with Al. Protected as bulk metal by oxide film but will burn in air and reacts with water. Used in special glass for TV and VDUs, in fireworks and flares to give red color.
The Sr87 isotope used in Rb-Sr age dating.
Strontium is usually detected by the crimson flame
coloration in a flame test.
Silicates and phosphates do not give the strontium flame. If large quantities of calcium are present, than a
spectroscope can be used to distinguish the Sr coloration.
Strontium compounds become alkaline (turns pink litmus
paper blue with a drop of water) after ignition before a blowpipe flame
with the exceptions of phosphates and silicates. Note that Ca and Mg
minerals also give an alkaline reaction.
In solution, the presence of strontium (in the absence of barium) is
proved by the heavy white precipitate formed by the addition of dilute H2SO4.
Emsley, J., 1991; THE ELEMENTS : Sec. Ed.,
Clarendon Press, Oxford, 251 p.