@article{Qin-2018-Integrated,
title = "Integrated water quality monitoring system with pH, free chlorine, and temperature sensors",
author = "Qin, Yiheng and
Alam, Arif Ul and
Pan, Si Hui and
Howlader, Matiar M. R. and
Ghosh, Raja and
Hu, Nan‐Xing and
Jin, Hao and
Dong, Shurong and
Chen, Chih‐Hung and
Deen, M. Jamal",
journal = "Sensors and Actuators B: Chemical, Volume 255",
volume = "255",
year = "2018",
publisher = "Elsevier BV",
url = "https://gwf-uwaterloo.github.io/gwf-publications/G18-104001",
doi = "10.1016/j.snb.2017.07.188",
pages = "781--790",
abstract = "Abstract Accurate, efficient, inexpensive, and multi-parameter monitoring of water quality parameters is critical for continued water safety from developed urban regions to resource-limited or sparsely populated areas. This study describes an integrated sensing system with solution-processed pH, free chlorine, and temperature sensors on a common glass substrate. The pH and temperature sensors are fabricated by low-cost inkjet printing of palladium/palladium oxide and silver. The potentiometric pH sensor has a high sensitivity of 60.6~mV/pH and a fast response of 15~s. The Wheatstone-bridge-based temperature sensor shows an immediate response of 3.35~mV/{\mbox{$^\circ$}}C towards temperature change. The free chlorine sensor is based on an electrochemically modified pencil lead, which exhibits a stable and reproducible sensitivity of 342~nA/ppm for hypochlorous acid. Such a free chlorine sensor is potentiostat-free and calibration-free, so it is easy-to-use. The three sensors are connected to a field-programmable gate array board for data collection, analysis and display, with real-time pH and temperature compensation for free chlorine sensing. The developed sensing system is user-friendly, cost-effective, and can monitor water samples in real-time with an accuracy of {\textgreater}82{\%}. This platform enables water quality monitoring by nonprofessionals in a simple manner.",
}
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<abstract>Abstract Accurate, efficient, inexpensive, and multi-parameter monitoring of water quality parameters is critical for continued water safety from developed urban regions to resource-limited or sparsely populated areas. This study describes an integrated sensing system with solution-processed pH, free chlorine, and temperature sensors on a common glass substrate. The pH and temperature sensors are fabricated by low-cost inkjet printing of palladium/palladium oxide and silver. The potentiometric pH sensor has a high sensitivity of 60.6 mV/pH and a fast response of 15 s. The Wheatstone-bridge-based temperature sensor shows an immediate response of 3.35 mV/°C towards temperature change. The free chlorine sensor is based on an electrochemically modified pencil lead, which exhibits a stable and reproducible sensitivity of 342 nA/ppm for hypochlorous acid. Such a free chlorine sensor is potentiostat-free and calibration-free, so it is easy-to-use. The three sensors are connected to a field-programmable gate array board for data collection, analysis and display, with real-time pH and temperature compensation for free chlorine sensing. The developed sensing system is user-friendly, cost-effective, and can monitor water samples in real-time with an accuracy of \textgreater82%. This platform enables water quality monitoring by nonprofessionals in a simple manner.</abstract>
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%0 Journal Article
%T Integrated water quality monitoring system with pH, free chlorine, and temperature sensors
%A Qin, Yiheng
%A Alam, Arif Ul
%A Pan, Si Hui
%A Howlader, Matiar M. R.
%A Ghosh, Raja
%A Hu, Nan‐Xing
%A Jin, Hao
%A Dong, Shurong
%A Chen, Chih‐Hung
%A Deen, M. Jamal
%J Sensors and Actuators B: Chemical, Volume 255
%D 2018
%V 255
%I Elsevier BV
%F Qin-2018-Integrated
%X Abstract Accurate, efficient, inexpensive, and multi-parameter monitoring of water quality parameters is critical for continued water safety from developed urban regions to resource-limited or sparsely populated areas. This study describes an integrated sensing system with solution-processed pH, free chlorine, and temperature sensors on a common glass substrate. The pH and temperature sensors are fabricated by low-cost inkjet printing of palladium/palladium oxide and silver. The potentiometric pH sensor has a high sensitivity of 60.6 mV/pH and a fast response of 15 s. The Wheatstone-bridge-based temperature sensor shows an immediate response of 3.35 mV/°C towards temperature change. The free chlorine sensor is based on an electrochemically modified pencil lead, which exhibits a stable and reproducible sensitivity of 342 nA/ppm for hypochlorous acid. Such a free chlorine sensor is potentiostat-free and calibration-free, so it is easy-to-use. The three sensors are connected to a field-programmable gate array board for data collection, analysis and display, with real-time pH and temperature compensation for free chlorine sensing. The developed sensing system is user-friendly, cost-effective, and can monitor water samples in real-time with an accuracy of \textgreater82%. This platform enables water quality monitoring by nonprofessionals in a simple manner.
%R 10.1016/j.snb.2017.07.188
%U https://gwf-uwaterloo.github.io/gwf-publications/G18-104001
%U https://doi.org/10.1016/j.snb.2017.07.188
%P 781-790
Markdown (Informal)
[Integrated water quality monitoring system with pH, free chlorine, and temperature sensors](https://gwf-uwaterloo.github.io/gwf-publications/G18-104001) (Qin et al., GWF 2018)
ACL
- Yiheng Qin, Arif Ul Alam, Si Hui Pan, Matiar M. R. Howlader, Raja Ghosh, Nan‐Xing Hu, Hao Jin, Shurong Dong, Chih‐Hung Chen, and M. Jamal Deen. 2018. Integrated water quality monitoring system with pH, free chlorine, and temperature sensors. Sensors and Actuators B: Chemical, Volume 255, 255:781–790.
