【摘要】 本文提出碳纤维束电极差分脉冲阳极溶出伏安法直接测定矿物中微量金的方法。较深入地讨论了活化时间,Hg/Au(W/W)对电极响应灵敏度和稳定性的影响,以及富集电位和时间的影响。富集3min,检测下限0.07μg/L;线性范围0.07～30μg/L,测定结果与AAS法基本相符。更多还原

【Abstract】 A method for the direct determination of micro-amount of gold in mineral was described by differential pulse anodic stripping voltammetry on a carbon fibers electrode. The effect of activation time and Hg/ Au(W/W) for sensitivity and stability of electrode response, and deposition potential and time was discussed. The linear response was given over the range of 0. 07-30μg/L . The detection limit was 0. 07μg/L for deposition time of 3 min. The result was in agreement with that obtained AAS.更多还原