INTEGRATED PHOSPHATE AND PH SENSING SYSTEM FOR WATER QUALITY MONITORING

被引：0
|
作者：
Bowrothu, Renuka [1 ]
Schumann, Todd [1 ]
Kim, Haein [1 ]
Kim, Kyoung Tae [2 ]
Hwang, Sunghyun [1 ]
Lee, Yoonseok [1 ]
Yoon, Yong Kyu [1 ]
机构：
[1] Univ Florida, Gainesville, FL 32611 USA
[2] Univ Washington, Bothell, WA USA
来源：
2020 33RD IEEE INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL SYSTEMS (MEMS 2020) | 2020年
关键词：
Antimony (Sb); Cobalt (Co); ion selective electrode (ISE); phosphate; pH; sensor; wireless module; Internet of Things (IoT);
D O I：
10.1109/mems46641.2020.9056230
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Cobalt (Co) ion selective electrode (ISE) has been studied for selective phosphate detection. As the electromotive force (EMF) response of this electrode to phosphate is affected by surrounding pH conditions, it has not been readily utilized for in-situ monitoring. In this work, we present an integrated Co based phosphate and antimony (Sb) based pH sensing system, which enables us to monitor precise phosphorous concentration taking into account a local pH level in aqueous solution. Platinum is used as the reference electrode. An extremely broad sensing range of phosphate concentration with 9 orders of magnitude concentration ranging between 5x10(-3) to 5x10(-12) M is reported. The sensing sensitive of 5 pM is one of the best reported in this kind of sensors in literature. Also, simultaneous detection of pH and phosphate concentration is presented using integrated wireless Bluetooth module. The total area of the fabricated sensor is 4 cm(2).
引用
收藏
页码：713 / 716
页数：4
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