Rapid Determination of Uranium in Water Samples by Adsorptive Cathodic Stripping Voltammetry Using a Tin-Bismuth Alloy Electrode
Rapid Determination of Uranium in Water Samples by Adsorptive Cathodic Stripping Voltammetry Using a Tin-Bismuth Alloy Electrode
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锡铋合金电极吸附阴极溶出伏安法快速测定水样中的铀
DOI：
10.1016/j.electacta.2015.06.087
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发表时间：
2015-08
影响因子：
6.6
通讯作者：
Shi Wei-Qun
中科院分区：
文献类型：
--
作者：
Zhang Li;Wang Cong-Zhi;Tang Hong-Bin;Wang Lin;Liu Yang-Sheng;Zhao Yu-Liang;Chai Zhi-Fang;Shi Wei-Qun
本工作首次采用锡铋合金电极(SnBiE)进行U(VI)浓度测定。与传统的固体电极（玻碳电极和铋块体电极）相比，SnBiE具有更高的氢过电势，这表明锡铋合金可以大大扩展潜在的电极检测系统的应用。结合电化学行为分析、光谱测量以及理论计算方法，揭示了铀-铜铁酮（N-亚硝基苯基羟胺）配合物的几何结构，并提出了更详细的电极机理。电分析结果表明，以二苯胍为辅助试剂可以获得最佳的灵敏度。 U(VI) 定量的校准图在 0.5 nM 至 30 nM 范围内呈线性，相关系数为 0.999。同时，累积时间为 30 s，检测限为 0.24 nM，与汞类似物的检测限相当。 SnBiE的实际应用已初步用于实际水样中UO22+的测定，结果与电感耦合等离子体质谱（ICP-MS）的结果非常一致。建立了一种非常简单、方便且廉价的方法来测定含有表面活性剂的天然水样中的UO22+，而无需进行样品预处理，从而大大缩短了分析时间。
In this work, the tin-bismuth alloy electrode (SnBiE) was used for U(VI) concentration determination for the first time. Compared to the conventional solid electrode (glassy carbon electrode and bismuth bulk electrode), the SnBiE possesses a higher hydrogen overpotential, which indicates that the tin-bismuth alloy can considerably extend the application of potentially available electrode detection systems. Combining with electrochemical behavior analysis and spectrometric measurements as well as theoretical calculation methods, the geometric structures of uranium-cupferron (N-nitrosophenylhydroxylamine) complexes have been revealed and a more detailed electrode mechanism has been proposed. The electroanalysis results show that the optimal sensitivity could be obtained by using diphenylguanidine as the auxiliary reagent. The calibration plot for U(VI) quantification was linear from 0.5 nM to 30 nM with a correlation coefficient of 0.999. In the meanwhile, a detection limit of 0.24 nM was obtained in connection with an accumulation time of 30 s, which is comparable with that of mercury analogues. The practical applications of SnBiE have been tentatively performed for the determination of UO22+in real water samples and the results were well consistent with those by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). A very simple, convenient and cheap approach was established for the determination of UO22+in natural water samples containing surfactants without the otherwise necessity of sample pretreatment, which drastically reduce the analysis time.
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影响因子：
3
作者：
Grabarczyk, Malgorzata;Koper, Anna
通讯作者：
Koper, Anna
影响因子：
3
作者：
Bucková, M;Gründler, P;Flechsig, GU
通讯作者：
Flechsig, GU
DOI：
10.1038/s43586-022-00143-5
发表时间：
2022-08-10
期刊：
NATURE REVIEWS METHODS PRIMERS
影响因子：
--
作者：
Arino，Cristina;Banks，Craig E.;Wang，Joseph
通讯作者：
Wang，Joseph
影响因子：
3
作者：
M. Gholivand;H. R. Nassab
通讯作者：
M. Gholivand;H. R. Nassab
影响因子：
6.2
作者：
Yin, Huanshun;Zhou, Yunlei;Zhu, Lusheng
通讯作者：
Zhu, Lusheng