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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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双向溶出伏安法同时检测金和铜
, PP. 339-344
Keywords: 双向溶出伏安法,修饰电极,碳糊电极
Abstract:
本文首次提出双向溶出伏安法,并将该方法用于同时检测水溶液中的Au(Ⅲ)和Cu(Ⅱ).采用细菌修饰的碳糊电极做工作电极,于阳极富集,阴极溶出测定Au(Ⅲ),同时在碳糊电极上再修饰上一层超细微粒金膜.然后,在金电极上进行阴极富集,阳极溶出检测Cu(Ⅱ).该法仪器设备简单、操作简便.Au(Ⅲ)与Cu(Ⅱ)的检测信号分别在阴极、阳极两个方向显示,分辨率高.Au(Ⅲ)在0.2～1μg/mL、Cu(Ⅱ)在2～10ng/mL浓度范围内,均有良好线性关系,其检测限依次为20ng/mL和0.5ng/mL,8次平行测定RSD小于3%
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