TY - JOUR
T1 - A temperature-compensated graphene sensor for nitrate monitoring in real-time application
AU - Alahi, Md Eshrat E
AU - Nag, Anindya
AU - Mukhopadhyay, Subhas Chandra
AU - Burkitt, Lucy
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Low-cost nitrate-N sensors and smart sensing systems are necessary to develop a distributed network to monitor the quality of water in real time. This paper presents the fabrication process of carbon printed sensors and the advantage of using a graphene sensor to measure the concentration of nitrate-N in water. The sensor was characterized at different temperatures and with different nitrate-N concentrations in water. Electrochemical Impedance Spectroscopy (EIS) was employed to characterize the developed sensors. The calibration standard with the temperature compensation is also explained. UV-Spectrometry was used to validate all the results and the range of concentrations was 1–70 ppm. The sensing system has WiFi connectivity to transfer the data to a cloud server to monitor the data in real time. The sensor has shown good performance during measurements and the developed sensing system has very good potential to be a part of a distributed sensing network to monitor the data in real time.
AB - Low-cost nitrate-N sensors and smart sensing systems are necessary to develop a distributed network to monitor the quality of water in real time. This paper presents the fabrication process of carbon printed sensors and the advantage of using a graphene sensor to measure the concentration of nitrate-N in water. The sensor was characterized at different temperatures and with different nitrate-N concentrations in water. Electrochemical Impedance Spectroscopy (EIS) was employed to characterize the developed sensors. The calibration standard with the temperature compensation is also explained. UV-Spectrometry was used to validate all the results and the range of concentrations was 1–70 ppm. The sensing system has WiFi connectivity to transfer the data to a cloud server to monitor the data in real time. The sensor has shown good performance during measurements and the developed sensing system has very good potential to be a part of a distributed sensing network to monitor the data in real time.
KW - graphene sensor
KW - nitrate monitoring
KW - printed sensor
KW - temperature compensation
KW - smart sensing system
KW - internet of things (IoT)
UR - http://www.scopus.com/inward/record.url?scp=85033495407&partnerID=8YFLogxK
U2 - 10.1016/j.sna.2017.11.022
DO - 10.1016/j.sna.2017.11.022
M3 - Article
SN - 0924-4247
VL - 269
SP - 79
EP - 90
JO - Sensors and Actuators, A: Physical
JF - Sensors and Actuators, A: Physical
ER -