Voltammetric sensor for uranium based on the propyl gallate- modified carbon paste electrode
Voltammetric sensor for uranium based on the propyl gallate- modified carbon paste electrode
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DOI：
10.1002/elan.1140070308
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发表时间：
1995-03
期刊：
影响因子：
3
通讯作者：
Joseph Wang;Jianmin Lu;D. Larson;K. Olsen
中科院分区：
文献类型：
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作者：
Joseph Wang;Jianmin Lu;D. Larson;K. Olsen
介绍了一种用没食子酸丙酯修饰的碳糊电极用于低浓度铀的富集/伏安法测定。由此产生的预浓缩电极提供了许多有吸引力的属性，现场感测铀，包括高灵敏度和选择性，自清洁能力，和使用非脱气静态解决方案。该响应的特征在于相对于糊剂组合物，预浓缩期，溶液和差分脉冲条件，和其他变量。该传感器具有高稳定性，可重复使用，无需再生。当连接到100英尺（30.5米）长的屏蔽电缆时，电极提供了遥感能力，如地下水中铀的测定所示。
A carbon paste electrode modified with the ligand propyl gallate is introduced for preconcentration/voltammetric measurements of low levels of uranium. The resulting preconcentrating electrode offers many attractive properties for on-site sensing of uranium, including high sensitivity and selectivity, self-cleaning capability, and use of nondeaerated quiescent solutions. The response is characterized with respect to the paste composition, preconcentration period, solution and differential pulse conditions, and other variables. The sensor displays high stability, and can be used repeatedly without regeneration. When coupled to a 100-ft (30.5-m) long shielded cable, the electrode offers a remote sensing capability, as illustrated in the determination of uranium in groundwater.