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LIJUN LI1, CONGYING JIA1, PENG WANG2, XIAOLEI LIU1, TIANZONG XU1, JIAHUI HUANG1, QIAN MA1, YINMING LIU3,*
- College of Electric and Information Engineering, Shandong University of Science and Technology, Shandong Qingdao, 266590, China
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Shandong Qingdao, 266590, China
- Library, Shandong University of Science and Technology, Shandong Qingdao, 266590, China
An optical fiber interferometric sensor for heavy metal ions in water is composed with tribond bridged bipyridine complex L coating Mach-Zehnder refractometer. Many heavy metals, include Zn2+, Mn2+, Co2+, Ni2+, Cd2+, and Cu2+ are investigated. The sensing performance of copper (II) ions is particularly studied. In 0 μM~25 μΜ, sensitivity of the sensor is 16.5 pm/μM with 99.6% linearity, and 3.03 μM limit of detection (LOD). In 25 μM ~250 μM, the sensitivity is 1.2 pm/μM with 41.67 μM LOD. The response time of the sensor is 101.97 s, 182.62 s, and 253.05 s of 20 μM, 200 μM, and 300 μM Cu2+ concentrations, respectively..
Optical fiber interferometric sensor, Mach-Zehnder refractometer, Heavy metal ion, Coating, Water.
Submitted at: Sept. 28, 2021
Accepted at: Aug. 10, 2023
LIJUN LI, CONGYING JIA, PENG WANG, XIAOLEI LIU, TIANZONG XU, JIAHUI HUANG, QIAN MA, YINMING LIU, Tribond bridged bipyridine complex-functionalized all-fiber interferometric sensor for heavy metal ions in water, Journal of Optoelectronics and Advanced Materials Vol. 25, Iss. 7-8, pp. 387-394 (2023)
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