Summary
Published in Sensors 16(8): 1190. https://doi.org/10.3390/s16081190
The reduction of nitrate leaching to ensure greater protection of groundwater quality has become a global issue. The development of new technologies for more accurate dosing of nitrates helps optimize fertilization programs. This paper presents the practical application of a newly developed electrochemical sensor designed for in situ quantification of nitrate. To our knowledge, this paper is the first to report the use of electrochemical impedance to determine nitrate concentrations in growing media under forest nursery conditions. Using impedance measurements, the sensor has been tested in laboratory and compared to colorimetric measurements of the nitrate. The developed sensor has been used in water-saturated growing medium and showed good correlation to certified methods, even in samples obtained over a multi-ion fertilisation season. A linear and significant relationship was observed between the resistance and the concentration of nitrates (R2 = 0.972), for a range of concentrations of nitrates. We also observed stability of the sensor after exposure of one month to the real environmental conditions of the forest nursery.
Sector(s):
Forests
Categorie(s):
Scientific Article
Theme(s):
Forestry Research, Forests, Seeds and Forest Seedlings Production
Departmental author(s):
Author(s)
CARON, William-Olivier, Mohammed S. LAMHAMEDI, Jeff VIENS and Younès MESSADDEQ
Year of publication :
2016
Format :
PDF available upon request
How to get the publication :
Keywords :
impédance électrochimique, substrat de croissance, nitrates, pépinière forestière, épinette blanche, production de semences et de plants, article scientifique de recherche forestière, Picea glauca, seeds and forest seedlings production, electrochemical impedance, growing media, nitrate, white spruce, forest nursery
