Next Article in Journal
From Small Molecules toward Whole Cells Detection: Application of Electrochemical Aptasensors in Modern Medical Diagnostics
Previous Article in Journal
High-Precision Lensless Microscope on a Chip Based on In-Line Holographic Imaging
Open AccessLetter

Combined SPRi Sensor for Simultaneous Detection of Nitrate and Ammonium in Wastewater

1
Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic
2
Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic
3
Faculty of Mining and Geology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic
*
Author to whom correspondence should be addressed.
Academic Editor: Venkat R. Bhethanabotla
Sensors 2021, 21(3), 725; https://doi.org/10.3390/s21030725
Received: 10 December 2020 / Revised: 8 January 2021 / Accepted: 16 January 2021 / Published: 21 January 2021
(This article belongs to the Special Issue Plasmonic Biosensors)
Water pollution is a serious problem in modern society. Agriculture, being responsible for the discharge of agrochemicals, organic matter, or drug residues, produces a huge amount of wastewater. Aquaponics has the potential to reduce both water consumption and the impact of water pollution on fish farming and plant production. In the aquatic environment, inorganic nitrogen is mostly present in the form of nitrate and ammonium ions. Nitrate, as a final product of ammonia mineralization, is the most common chemical contaminant in aquifers around the world. For continuous monitoring of nitrogen compounds in wastewater, we propose a sensor for the simultaneous detection of nitrate and ammonium. A surface plasmon resonance imaging method with enzyme-mediated detection was used. Active layers of nitrate reductase and glutamine synthetase were created on the gold surface of a biochip and tested for the sensing of nitrate and ammonium in water from an aquaponic system. The proposed sensor was applied in water samples with a concentration of NO3 and NH4+ in a range between 24–780 mg·L−1 and 0.26–120 mg·L−1, respectively, with minimal pretreatment of a sample by its dilution with a buffer prior to contact on a biochip surface. View Full-Text
Keywords: nitrate; ammonium; surface plasmon resonance; wastewater; aquaponics; sensor nitrate; ammonium; surface plasmon resonance; wastewater; aquaponics; sensor
Show Figures

Figure 1

MDPI and ACS Style

Vráblová, M.; Koutník, I.; Smutná, K.; Marková, D.; Veverková, N. Combined SPRi Sensor for Simultaneous Detection of Nitrate and Ammonium in Wastewater. Sensors 2021, 21, 725. https://doi.org/10.3390/s21030725

AMA Style

Vráblová M, Koutník I, Smutná K, Marková D, Veverková N. Combined SPRi Sensor for Simultaneous Detection of Nitrate and Ammonium in Wastewater. Sensors. 2021; 21(3):725. https://doi.org/10.3390/s21030725

Chicago/Turabian Style

Vráblová, Martina; Koutník, Ivan; Smutná, Kateřina; Marková, Dominika; Veverková, Nikola. 2021. "Combined SPRi Sensor for Simultaneous Detection of Nitrate and Ammonium in Wastewater" Sensors 21, no. 3: 725. https://doi.org/10.3390/s21030725

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop