Paper-Based Sensor Chip for Heavy Metal Ion Detection by SWSV
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Updated: Feb 2, 2026

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae
Published on: July 10, 2015
Xiaoqing Wang1,2, Jizhou Sun3, Jianhua Tong4
1State Key Laboratory of Transducer Technology, Institute of Electrics, Chinese Academy of Sciences, Beijing 100190, China. wangxiaoqing15@mails.ucas.edu.cn.
Abstract:
Heavy metal ion pollution problems have had a terrible influence on human health and the environment. Therefore, the monitoring of heavy metal ions is of great practical significance. In this paper, an electrochemical three-electrode system was fabricated and integrated on nitrocellulose membrane (NC) by the use of magnetron sputtering technology, which exhibited a uniform arrangement of porous structure without further film modification. This paper-based sensor chip was used for Cu2+ detection by square-wave stripping voltammetry (SWSV). Within the ranges of 5~200 μg·L-1 and 200~1000 μg·L-1, it showed good linearity of 99.58% and 98.87%, respectively. The limit of detection was 2 μg·L-1. On the basis of satisfying the detection requirements (10 μg·L-1), the integrated sensor was small in size and inexpensive in cost. Zn2+, Cd2+, Pb2+ and Bi3+ were also detected by this paper-based sensor chip with good linearity.
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