An environmental monitoring system for trace metals using stripping voltammetry
An environmental monitoring system for trace metals using stripping voltammetry
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DOI：
10.1016/s0925-4005(98)00078-1
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发表时间：
1998-05-30
影响因子：
8.4
通讯作者：
Glennon, JD
中科院分区：
文献类型：
--
作者：
Desmond, D;Lane, B;Glennon, JD
工业和监管机构面临越来越大的压力，要求其监测微量金属向水生环境的排放。在丝网印刷电极上使用阳极溶出伏安法（ASV），使用NMRC恒电位仪结合软件控制，可以实现痕量金属的测定，达到十亿分之一（ppb）的水平。一次性测试头由廉价的材料组成，并允许在批量过程中进行低成本生产。伏安法（测量电流作为电位的函数）分析方法对于铜、镉、铅和锌的测定是有吸引力的。在碳电极上的汞膜的制备和随后的阳极溶出伏安检测步骤中都使用了三电极装置。本文研究了参比电极、丝网印刷碳电极和基于FPGA的单元的性能。(C)1998年Elsevier Science S.A. All rights reserved.
There is increasing pressure on industry and regulatory bodies to monitor the discharge of trace metals into the aquatic environment. The determination of trace metals can be.achieved to parts per billion (ppb) levels using anodic stripping voltammetry (ASV) at screen printed electrodes, controlled using an NMRC potentiostat coupled with software control. The disposable testheads consist of inexpensive materials and allow for low-cost production in batch processes. Voltammetric (the measurement of current as a function of potential) methods of analysis are attractive for the determination of copper, cadmium, lead and zinc. A three electrode set-up is used both in the preparation of the mercury film on a carbon electrode and in the subsequent anodic stripping voltammetric detection step. The performances of the reference electrodes, the screen-printed carbon and the FPGA based unit have been investigated in this paper. (C) 1998 Elsevier Science S.A. All rights reserved.