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阳极溶出伏安法(ASV)测定银具有很高的灵敏度。浸石墨电极和热解石墨电极测定天然水和雨、雪中的银。干扰少,灵敏度达4×10~(-11)mol·dm~(-3)。郭耀基等在0.5mol·dm~(-3)HNO_3-0.002mol·dm~(-3)KCl体系中,测定了水中的痕量银。高蒨等测定了土壤中银,灵敏度达0.02ppb。这些方法均不能直接用于贵金属基体锇、钌中杂质银的测定。有效的富集、分离微量和痕量(ppb及ppt级)元素,一直是分析化学家所关注的重要研究课题。目前有
Anodic stripping voltammetry (ASV) determination of silver with high sensitivity. Baptist graphite electrodes and pyrolytic graphite electrodes determine natural water and rain, silver in snow. Less interference, the sensitivity of 4 × 10 ~ (-11) mol · dm ~ (-3). Guo Yaoji and other 0.5mol · dm ~ (-3) HNO_3-0.002mol · dm ~ (-3) KCl system, the determination of trace silver in water. Goldy so determined soil silver, the sensitivity of 0.02ppb. These methods can not be directly used for the determination of impurity silver in noble metal matrix osmium and ruthenium. Effective enrichment, the separation of trace and trace (ppb and ppt level) elements, has always been an important research topic of analytical chemists. Currently there