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

1
State Key Laboratory of Transducer Technology, Institute of Electrics, Chinese Academy of Sciences, Beijing 100190, China
2
University of Chinese Academy of Sciences, Beijing 100190, China
*
Authors to whom correspondence should be addressed.
Micromachines 2018, 9(4), 150; https://doi.org/10.3390/mi9040150
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)
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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. 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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