TY - JOUR
T1 - A novel analytical approach for the simultaneous measurement of nitrate and dissolved organic carbon in soil water
AU - Yeshno, Elad
AU - Dahan, Ofer
AU - Bernstain, Shoshana
AU - Arnon, Shlomi
N1 - Publisher Copyright:
© 2021 EDP Sciences. All rights reserved.
PY - 2021/4/21
Y1 - 2021/4/21
N2 - In this paper, we present a novel approach, enabling the measurement of nitrate concentrations in natural soil porewater containing natural soil dissolved organic carbon (DOC). The method is based on UV absorbance spectroscopy, combined with fluorescence spectroscopy, for simultaneous analysis of DOC and nitrate concentrations. The analytical procedure involves deduction of the absorption caused by the DOC from the total absorbance in the UV range that is attributed to both DOC and nitrate in the water solution. The analytical concept has been successfully tested in soil water samples obtained from five agricultural sites, as well as in water samples obtained from a commercial humus soil mixture. We believe that the new analytical concept can provide a scientific foundation for developing a sensor for real-time nitrate concentration measurements in agricultural soils. As such, it can play a significant role in reducing nitrate pollution in water resources, optimizing input application in agriculture, and decreasing food production costs.
AB - In this paper, we present a novel approach, enabling the measurement of nitrate concentrations in natural soil porewater containing natural soil dissolved organic carbon (DOC). The method is based on UV absorbance spectroscopy, combined with fluorescence spectroscopy, for simultaneous analysis of DOC and nitrate concentrations. The analytical procedure involves deduction of the absorption caused by the DOC from the total absorbance in the UV range that is attributed to both DOC and nitrate in the water solution. The analytical concept has been successfully tested in soil water samples obtained from five agricultural sites, as well as in water samples obtained from a commercial humus soil mixture. We believe that the new analytical concept can provide a scientific foundation for developing a sensor for real-time nitrate concentration measurements in agricultural soils. As such, it can play a significant role in reducing nitrate pollution in water resources, optimizing input application in agriculture, and decreasing food production costs.
UR - http://www.scopus.com/inward/record.url?scp=85104610812&partnerID=8YFLogxK
U2 - 10.5194/hess-25-2159-2021
DO - 10.5194/hess-25-2159-2021
M3 - Article
AN - SCOPUS:85104610812
SN - 1027-5606
VL - 25
SP - 2159
EP - 2168
JO - Hydrology and Earth System Sciences
JF - Hydrology and Earth System Sciences
IS - 4
ER -