| Popis: |
A method is described for the determination of nickel in beryllium or beryllium oxide. Nickel is precipitated with benzotriazole using cadmium as a carrier. A further separation from other elements is made by passing a hydrochloric acid-isopropyl alcohol solution through Dowex-1 anion-exchange resin. If necessary, separation of nickel from manganese is made by chloroform extraction of the nickel dimethylglyoxime complex. Nickel is finally determined as the dimethylglyoxime complex in an aqueous medium. The method is accurate to ±3 % relative or 3 μg of nickel, whichever is greater, and is essentially specific for the determination of nickel. |
