On the storage of the sodium borohydride solution used in the hydride-generation atomic-absorption technique.
A critical examination has been made of the stability of sodium borohydride solutions on storage at room temperature and at 4 degrees in a refrigerator, by comparison of the reductive power for selenium(IV) in a hydride-generator, with that of a freshly prepared solution. No significant change in reactivity appeared to be caused by storage for a period of three weeks, and there seems no need to use freshly prepared solutions for analytical work.
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Department of Chemistry, University of Oslo, Oslo 3, Norway.