文献类型：期刊文献

英文题名：High Sensitive On-Site Cadmium Sensor Based on AuNPs Amalgam Modified Screen-Printed Carbon Electrodes

作者：Zhang, Lei[1];Li, Da-Wei[1];Song, Wei[1];Shi, Lei[1];Li, Yang[1];Long, Yi-Tao[1]

机构：[1]E China Univ Sci & Technol, Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2010

卷号：10

期号：10

起止页码：1583

外文期刊名：IEEE SENSORS JOURNAL

收录：;EI(收录号：20103213143027);WOS:【SCI-EXPANDED(收录号:WOS:000286311500009)】；

基金：Manuscript received February 01, 2010; revised March 03, 2010; accepted March 03, 2010. Date of publication June 10, 2010; date of current version July 23, 2010. This work was supported in part by the National High Technology Research and Development Program of China (863 Project: 2008AAO6A406). The associate editor coordinating the review of this paper and approving it for publication was Dr. Evgeny Katz.

语种：英文

外文关键词：Cadmium sensor; gold nanoparticles amalgam; on-site environmental monitoring; screen-printed carbon electrode

摘要：A portable analysis system has been successfully developed for on-site heavy metal ion detection in the environment. The disposable Au nanoparticles (AuNPs) amalgam modified screen-printed carbon electrodes (SPCE) are used in this system for the monitoring of Cd2+ in real water samples. The response current is linear to Cd2+ concentration within the range of 8.4 ppb to 500 ppm, with a low detection limit of 2.6 ppb. Meanwhile, the surfaces of SPCE could be regenerated by potentiostatic anodic stripping voltammetry. The relative standard deviation (RSD) of voltammetric measurements is 8.3% for five successive measurements on the same electrode. These AuNPs amalgam film modified SPCE provide an integrated electrochemical sensor with high sensitivity and selectivity for the determination of Cd2+. This analysis system can be broadly applied in on-site environmental monitoring due to its low cost, usability, and feasibility of mass production, especially for heavy metal ion rapid monitoring during the sudden environmental pollution accidents in China.