Ethanol liquid (98%, purity) was used as a solvent and iron (III) nitrate as a precursor of iron nanoparticles and
selenium dioxide (Se[O.sub.2]) was used as source of selenium ions in the water.
Other selenium compounds, such as
selenium dioxide (reduced by trialkyl borohydrides) [16] or selenium tetrachloride [17], are less commonly used.
For example, there's downeyite, a transparent crystalline form of
selenium dioxide. The mineral was discover at vents above a coal fire near Glen Lyon, Pa., and named for Wayne F.
In the Wenmec selenium roasting furnace, the selenium which is present in the anode slimes is oxidised to
selenium dioxide. The temperature in the furnace is more than 400 [degrees] C, which means that the Se[O.sub.2] formed sublimates and mixes with other gases present.