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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~(-11)克,镉为1×10~(-11)克。
Trace silver and cadmium (0.0xppm) in geochemical samples Direct determination of silver and cadmium by flameless atomic absorption spectrometry without isolation is difficult. Miyamoto Ip has used dowex1 × 8 anion resin separation and enrichment of silver in electrolytic copper; Liaoning Geological Bureau Central Laboratory 717 anion resin was used to separate and cosmic collection of cadmium in the probe; F. Bea.Barredo and C. Polo polo has used dowex1 × 8 anion resin separation of silicate rocks of gold, silver and cadmium, with flame atomic absorption spectrometry. This work has referred to the work of others, combined with our work, to determine the experimental conditions. The absolute sensitivity of silver is 1.5 × 10 ~ (-11) g, cadmium is 1 × 10 ~ (-11) g.