电化学-分光光度法联用技术检测水样中Cu(Ⅱ)  

Determination of Cu(Ⅱ) in Water Samples Based on Combination of Electrochemistry and Spectrophotometry

作　　者：陆妍 韩海涛[1] 王晨晨[1] 潘大为[1,2] LU Yan;HAN Hai-tao;WANG Chen-chen;PAN Da-wei(Key Laboratory of Coastal Environmental Processes and Ecological Remediation ,Yantai Institute of Coastal Zone Research , Chinese Academy of Sciences ,Yantai 264003;University of Chinese Academy of Sciences ,Beijing 100049)

机构地区：[1]中国科学院海岸带环境过程与生态修复重点实验室中国科学院烟台海岸带研究所,山东烟台264003 [2]中国科学院大学,北京100049

出　　处：《分析科学学报》2018年第3期347-351,共5页Journal of Analytical Science

基　　金：中国科学院科研装备研制项目(No.YZ201558);中国科学院青年创新促进会项目(No.2011170)

摘　　要：本文利用电化学-分光光度法联用技术检测水样中Cu(Ⅱ)。电化学过程作为介质转换的预处理步骤,而光度法用于Cu(Ⅱ)的定量分析,这种结合有助于克服水体颜色或浊度的干扰。通过对实验参数,沉积液pH值、沉积电位、Cu(Ⅱ)的沉积时间、清洗时间和显色时间等的优化,对国标法(HJ 485-2009)检测水体中Cu(Ⅱ)的前处理步骤进行了改进。这种联用方法有良好的重现性和选择性,并应用于多种实际水样的检测,获得较好结果。In this paper,electrochemistry and UV-Vis spectrophotometry method were combined to detect Cu（Ⅱ）in water samples.The electrochemical process served as medium shift pretreatment step while the spectrophotometric analysis was in charge of the quantitative analysis.This combination gives the chance to overcome the interferences of turbidity,color or high salinity during the determination of Cu（Ⅱ）in real water samples due to the advantages of electrochemical process.The experimental parameters such as pH values of the deposition solution,deposition potential,deposition time,cleansing time of Cu（Ⅱ）and coloration time were optimized.The pretreatment process of National Environmental Protection Standard of Water quality for copper determination in China（HJ 485-2009）was improved.This method had excellent reproducibility and selectivity and was applied to the determination of Cu（Ⅱ）in waste waters,coastal river water and coastal sea water with satisfactory results.

关 键 词：电化学 分光光度法 介质转换 Cu(Ⅱ) 

分 类 号：O657[理学—分析化学]