简介:2.1 The cyanide, as hydrocyanic acid (HCN), is released from samples containing cyanide
by means of a reflux-distillation operation under acidic conditions and absorbed in a scrubber
containing sodium hydroxide solutio简介:2.1 The cyanide, as hydrocyanic acid (HCN), is released from samples containing cyanide
by means of a reflux-distillation operation under acidic conditions and absorbed in a scrubber
containing sodium hydroxide solution. The cyanide concentration in the absorbing solution is then
determined colorimetrically or titrametrically by Method 9014 or by ion-selective electrode by Method
9213.详细>