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- Title
Paper-Based Sensor Chip for Heavy Metal Ion Detection by SWSV.
- Authors
Sun, Jizhou; Tong, Jianhua; Guan, Xin; Bian, Chao; Xia, Shanhong; Wang, Xiaoqing
- 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.
- Subjects
DETECTORS; MAGNETRON sputtering; METAL ions
- Publication
Micromachines, 2018, Vol 9, Issue 4, p150
- ISSN
2072-666X
- Publication type
Article
- DOI
10.3390/mi9040150