Wireless water quality monitoring and spatial mapping with disposable whole-copper electrochemical sensors and a smartphone
Wireless water quality monitoring and spatial mapping with disposable whole-copper electrochemical sensors and a smartphone
复制标题
使用一次性全铜电化学传感器和智能手机进行无线水质监测和空间测绘
DOI：
10.1016/j.snb.2019.127557
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发表时间：
2020-03-01
影响因子：
8.4
通讯作者：
Lin, Shiwei
中科院分区：
文献类型：
--
作者：
Liao, Jianjun;Chang, Feng;Lin, Shiwei
便携式、快速、经济有效的环境污染检测仍然是水质分析领域的一个重要挑战。在此，我们描述了一种基于智能手机的水质监测系统，该系统可以在准确的位置对Pb2+离子和化学需氧量(COD)进行量化。该系统由四个主要部分组成：(I)全铜电化学传感器，(Ii)手持检测器，(Iii)安装了定制应用程序的智能手机，和(Iv)云地图网站。传感器芯片由低成本的铜制成，包括微细加工的铜工作电极、铜对电极和铜/氯化铜参比电极。手持式检测器(类似于50g)可以执行几种类型的电分析技术，包括计时电流法、循环伏安法、线性扫描伏安法和方波伏安法。通过一个应用程序(App)，智能手机被用来控制检测器并实时可视化检测结果。使用云地图网站接收和显示污染物浓度和地理位置，供公众共享和查看。由于基于智能手机的系统具有成本效益、体积小、现场便携和完全无线的特点，它在资源有限的环境中显示出巨大的应用潜力。
Portable, rapid, and cost-effective detection of environmental contamination remains an important challenge in the field of water quality analysis. Herein, we described a smartphone-based water quality monitoring system that allowed for the quantification of Pb2+ ions and chemical oxygen demand (COD) at an exact location. The system was composed of four main parts: (i) a whole-copper electrochemical sensor, (ii) a hand-held detector, (iii) a smartphone installed with a custom application program, and (iv) a Cloud map website. The sensor chips were made of low-cost copper, including microfabricated Cu working electrodes, Cu counter electrodes, and Cu/CuCl2 reference electrodes. The hand-held detector ( similar to 50 g) can perform several types of electroanalytical techniques, including chronoamperometry, cyclic voltammetry, linear sweep voltammetry, and square wave voltammetry. With an Application (App), the smartphone was used to control the detector and visualize the testing results in real time. A Cloud map website was used to receive and display the contamination concentrations and geographic locations for public sharing and viewing. Since the smartphone-based system is cost-effective, small in size, field-portable, and fully wireless, it shows great potential for applications in resource-limited settings.