標題: Rapid and Highly Sensitive Extended Gate FET-Based Sensors for Arsenite Detection Using a Handheld Device
作者: Tatavarthi, Sai Sudheer
Wang, Shin-Li
Wang, Yu-Lin
Chen, Jung-Chih
分子醫學與生物工程研究所
Institute of Molecular Medicine and Bioengineering
關鍵字: Arsenite;Ion selective membrane;Extended gate field effect transistor;Heavy metal ion
公開日期: 12-一月-2020
摘要: Heavy metals are very harmful to the environment and is toxic which affects the human health. Monitoring the heavy metal ion in food and water is necessary. In this research, we developed a FET based ion selective sensor for detecting Arsenite (As(III)) ions by a hand held device. The sensor characteristics are carried out and illustrated. This selective sensor shows higher sensitivity (35.19 mV/log [As3+]) than the ideal Nernstian slope. The dynamic range of the Arsenite based ion sensor is from 10(-10)M to 10(-4)M. The detection limit of this FET based ion selective sensor is below 10(-10)M and is comparable to ICP-MS. The sensor captures the particular target ion and is not affected by the interfering ions such as Cadmium and Lead. The sensitivity and selectivity characteristics are comparatively better than the traditional potentiometric Ion selective electrode (ISE). The sensor has shorter response time and is easy to operate. This sensor is affordable for everyone and convenient to use for monitoring the food and drinking water frequently.
URI: http://dx.doi.org/10.1149/2162-8777/abab18
http://hdl.handle.net/11536/155422
ISSN: 2162-8769
DOI: 10.1149/2162-8777/abab18
期刊: ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
Volume: 9
Issue: 11
起始頁: 0
結束頁: 0
顯示於類別:期刊論文