同时溶解和ICP-AES同时测定焊锡材料中的铅、锡和银

Simultaneous Dissolution of Tin,Silver and Lead in Tin-Lead Solder Alloy and Their Determinations by ICP-AES

提出了简单和快速地同时溶解及测定铅锡银合金中铅锡银的新方法。合金样品经5mL浓硝酸、5mL过氧化氢和I mL氢氟酸溶解后，加入5％硼酸掩蔽过量的氟离子。用电感耦合等离子体原子发射光谱法（ICP—AES）同时测定溶液中的铅、锡和银。加标回收率为98％-102％，RSD为2．1％～5.7％．

A new method for the simultaneous dissolution and determination of Lead, Tin and Silver in Tin - Lead solder alloy was reported. The sample was dissolved with 5 mL nitric acid, 5 mL hydrogen peroxide and lmL hydrofluoric acid, followed by the addition of 10 mL 5% boric acid to mask the excess fluorie ion. Lead, Tin and Silver were then simultaneously determined by ICP - AES. The recoveries of the elements were in the range of 98% -102% , and the RSD 2.1% -5.7%.