锌锭样品用盐酸溶解后,在氨性介质中加入Al3+,锡铅锑铋离子与氢氧化铝共沉淀后,用盐酸(2+98)溶解沉淀,氢化物发生-原子荧光光谱法测定锡铅锑铋.选择0.10 mol/L的Al3+加入量为4.0～5.0 mL,共沉淀时间为30 min,用10 mL 0.1 mol/L的氨水洗涤沉淀符合共沉淀要求且不会造成沉淀损失.基体锌及试液中引入的Al3+对测定均不产生干扰.方法用于锡铅锑铋的质量分数大于0.001%的锌锭中几种离子的测定,结果满足分析要求.
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