@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 and
Howlader, M. 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
%A Howlader, M. 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 Pan, M. 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.
