Study and Application of New Analytical Methods Based on Metal Nanoparticles for Copper Ion

铜（Cu）是生物体的必需微量元素。然而，Cu的过量摄入会引发人体疾病和生物死亡。因此，检测水和食物中的Cu具有重要意义。Cu的经典检测方法如原子光谱法和质谱法的选择性强、灵敏度高、准确度好，但需要昂贵且笨重的仪器和配套实验设备，运行成本高，不宜在现场应用。相较而言，分光光度法和电化学法具有简单、轻便、成本低、易操作等优点，可应用于Cu的现场、快速检测。纳米金属粒子凭借其独特的物理和化学性质，已逐渐成为分光光度法和电化学法测定Cu的有效试剂。目前已报道的使用金属纳米粒子检测Cu的方法还有一些不足之处，如金属纳米粒子制备方法复杂、检测灵敏度较低、检测速度慢、难以应用于现场分析等。因此，使用金属纳米...Copper (Cu) is an essential trace element for living organisms. However, intake of an excess amount of Cu will cause human diseases and death of some organisms. Therefore, detection of Cu in water and food is of great significance. Classical methods for determination of Cu, such as atomic spectrometries and mass spectrometry, are highly selective, sensitive and accurate. However, they are also exp...学位：理学硕士院系专业：环境与生态学院_环境科学学号：3312014115169

基于电化学方法测定饮用水源水中的痕量铜离子（英文）

本文建立了一种饮用水源水中痕量溶解态铜离子(Cu2+)的定性和定量电化学检测方法.该方法首先通过电化学循环伏安法于玻碳电极表面制备粒径约为70 nm的金纳米粒子（Au NPs）,然后采用方波阳极溶出伏安法进行待测水样中Cu2+的定性定量分析.研究结果表明,对于标准溶液,方法的检出限为1.3μg·L-1,线性范围在2～50μg·L-1之间,常见重金属离子对其定性定量分析几无影响.在此基础上,将该方法应用于福建省重要的饮用水源水———闽江中游水样中Cu2+的含量分析,所得测试结果与国家标准方法（石墨炉原子吸收光谱法）无显著性差异,标准偏差在20%以内.本方法具有电极制备简单、测定成本低以及分析快速等优点,进一步优化电极制备方法以提高方法的重现性和定量准确度,将可望用于现场测定各种饮用水源水中的痕量溶解态Cu2+

Electrochemical Determination of Trace Copper ions in Drinking Water Source

 本文建立了一种饮用水源水中痕量溶解态铜离子（Cu2+）的定性和定量电化学检测方法. 该方法首先通过电化学循环伏安法于玻碳电极表面制备粒径约为70 nm的金纳米粒子（Au NPs），然后采用方波阳极溶出伏安法进行待测水样中Cu2+的定性定量分析. 研究结果表明，对于标准溶液，方法的检出限为1.3 μg·L-1，线性范围在2 ~ 50 μg·L-1之间，常见重金属离子对其定性定量分析几无影响. 在此基础上，将该方法应用于福建省重要的饮用水源水——闽江中游水样中Cu2+的含量分析，所得测试结果与国家标准方法（石墨炉原子吸收光谱法）无显著性差异，标准偏差在20%以内. 本方法具有电极制备简单、测定成本低以及分析快速等优点，进一步优化电极制备方法以提高方法的重现性和定量准确度，将可望用于现场测定各种饮用水源水中的痕量溶解态Cu2+.Aiming at the on-site and quick safety evaluation of the dissolved trace copper ions (Cu2+) in drinking water source, an electrochemical detection platform was developed on the basis of the square wave anodic stripping voltammetry using the gold nanoparticles (Au NPs) modified glassy carbon electrode, where Au NPs were deposited via electrochemical cyclic voltammetry. The proposed method displayed the limit of detection as low as 1.3 μg·L-1 in the linear range of 2 ~ 50 μg·L-1. The proposed method was applied to the determination of Cu2+ in the midstream of Minjiang River, one of the most important drinking water sources in Fujian province, China. The results were nearly identical to that obtained by the standard method quantitatively with a deviation less than 20%. Furthermore, the proposed electrochemical method is simple, economical and fast, and has the potential for the field determination of trace dissolved Cu2+ in various drinking water sources facilitated with the portable potentiostat.国家自然科学基金项目（No. 21473140）、福建省产学研合作项目（No. 2016Y4012）和中央高校基本科研业务费专项资金（No. 20720160113）资助This work was financially supported by the Natural Science Foundation of China (No. 21473140), the Collaboration Project between Industry and University in Fujian Province (No. 2016Y4012), and the Fundamental Research Funds for the Central Universities (No. 2072016011).作者联系地址：1. 近海海洋环境科学国家重点实验室, 厦门大学环境与生态学院， 福建 厦门 361102；2. 固体表面物理化学国家重点实验室, 厦门大学化学化工学院， 福建 厦门 361005Author's Address: 1. State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology,Xiamen University, Xiamen 361102, Fujian, China; 2. State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China通讯作者E-mail：[email protected], [email protected]