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Paper-Based Sensor Chip for Heavy Metal Ion Detection by SWSV

State Key Laboratory of Transducer Technology, Institute of Electrics, Chinese Academy of Sciences, Beijing 100190, China
University of Chinese Academy of Sciences, Beijing 100190, China
Authors to whom correspondence should be addressed.
Micromachines 2018, 9(4), 150;
Received: 26 February 2018 / Revised: 24 March 2018 / Accepted: 26 March 2018 / Published: 27 March 2018
(This article belongs to the Special Issue Paper-Based Transducers and Electronics)
PDF [13104 KB, uploaded 3 May 2018]


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. View Full-Text
Keywords: paper-based sensor; magnetron sputtering; SWSV; heavy metal ions paper-based sensor; magnetron sputtering; SWSV; heavy metal ions

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Wang, X.; Sun, J.; Tong, J.; Guan, X.; Bian, C.; Xia, S. Paper-Based Sensor Chip for Heavy Metal Ion Detection by SWSV. Micromachines 2018, 9, 150.

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