Beryllium Be

A review of the basic methods for determining beryllium with the aid of EDTA reagent, which masks the ions of Al and many other elements is presented. When Be is extracted together with acetylacetone, >=0.25 μg of Be can be determined spectrophotometrically with an error of +-5%. The determination is hindered by citrate-ions. It is suggested to gravimetrically determine Be in ores with the aid of 2,2-dimethylhexanedion-3,5 (DMH) and in alloys as well as beryll concentrates with the aid of hexammine cobalt chloride. DMH reagent is used in bromatometric titration in the presence of methyl red. The method has been used in determining 4 to 10% Be in alloys. The arsenate titrametric method is applicable in determination of Be in minerals and concentrates, while amperometric titration with the aid of uramil-N,N-diacetic acid is recommended for analysis of Be-Al-Mg-Zn alloys containing from 0.8 to 1.7% Be. It is also suggested to determine Be photometrically with the aid of aluminon (in Nb alloys; calcium, strontium and barium carbonates in bronze) and with the aid of beryllon-4 in aluminum alloys. In minerals, Be can be determined fluorimetrically with the aid of morin