摘要
化探样中的痕量银和镉(0.0xppm)不经分离直接用无火焰原子吸收法测定银和镉是困难的。宫本益夫曾用dowex1×8阴离子树脂分离和富集电解铜中的银;辽宁地质局中心实验室曾用717阴离子树脂分离和宙集化探样中的镉;F.Bea.Barredo和C.Polo polo曾用dowex1×8阴离子树脂分离硅酸盐岩石中的金、银和镉后,用无火焰原子吸收法测定。本工作参考了他人的工作,结合我们的工作情况,确定了实验条件。其绝对灵敏度银为1.5×10克,镉为1×10克。
A method for the determination of Ag and Cd at ppb levels in geochmicel refernce samples by flameless atomic absorption spertrometry after separatiun with an anion-exchange resin was described.The samples are digested with aqua regia.The resultant solutions of 0.6N hydrochloric acid were passed through a column of 717 anion exchange resin,and eluted quantitatively with 30 ml 1.5N nitric acid.The amounts of Ag and Cd in the eluate were determined by flameless absorption spectrometry.
出处
《岩矿测试》
CAS
1982年第4期60-63,共4页
Rock and Mineral Analysis
