火焰原子吸收法测定锡粉中Fe,Cu,Pb,Sb和Ca的含量

Determination of Fe,Cu,Pb,Sb,Ca in tin powder by fire atomic absorption spectrometry

用ＨＣｌＨＮＯ３ 溶解试样，在相同量的试液中，分别加入浓度依次递增的５ 种元素的标准溶液，用空气乙炔火焰原子吸收法测定Ｆｅ，Ｃｕ ，Ｐｂ ，Ｓｂ 和Ｃａ 的含量，建立了优化的测定条件，并对可能存在的元素进行了干扰实验．方法的回收率为９８ ．５ ％ ～１０２ ．０ ％ ，相对标准偏差为１ ．３ ％ ～２ ．８ ％ ．

After dissolved by HCl HNO 3,the same samples were added into the five element standard solutions increasing by concentration degrees,respectively,then the contents of iron,copper,lead,stibium and calcium were determined by air acetylene fire atomic absorption spectrometry (FAAS).The optimum determination conditions have been established.The interference tests for other elements that probably exist have been conducted.The rate of recovery is 98.5%～102.0%,the RSD is 1.3%～2.8%.