The results showed that Ag~+ and Pd~(2+) can be replaced by Fe in the presence of certain amount of Fe~(2+).

• 结果表明,在一定浓度的Fe~(2+)存在时铁能定量置换出溶液中的Ag~+、Pd~(2+)等金属离子,而Cd~(2+)在此条件下不被置换;