After the sample of silver alloy is dissolved in dilute HNO 3 solution,AgCl is then put into the so lution,thus formed for separation of silver from it by precipitation.

• 银合金试样用稀硝酸溶解,用氯化银沉淀法分离大量基体银,然后在3mol/LHCl介质中以Sn2+将Te4+还原成单体进行目视比浊或分光光度法测定。