Minimalizing Non-point Source Pollution Using a Cooperative Ion-Selective Electrode System for Estimating Nitrate Nitrogen in Soil.

Autor:	Su R; Department of Electrical Engineering, Henan Agricultural University, Zhengzhou, China.; Henan International Joint Laboratory of Laser Technology in Agriculture Sciences, Zhengzhou, China.; State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China., Wu J; Department of Electrical Engineering, Henan Agricultural University, Zhengzhou, China., Hu J; Department of Electrical Engineering, Henan Agricultural University, Zhengzhou, China.; Henan International Joint Laboratory of Laser Technology in Agriculture Sciences, Zhengzhou, China.; State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China., Ma L; Department of Electrical Engineering, Henan Agricultural University, Zhengzhou, China.; Henan International Joint Laboratory of Laser Technology in Agriculture Sciences, Zhengzhou, China.; State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China., Ahmed S; Department of Electrical Engineering, Henan Agricultural University, Zhengzhou, China.; Henan International Joint Laboratory of Laser Technology in Agriculture Sciences, Zhengzhou, China.; State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China., Zhang Y; Department of Electrical Engineering, Henan Agricultural University, Zhengzhou, China.; Henan International Joint Laboratory of Laser Technology in Agriculture Sciences, Zhengzhou, China.; State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China., Abdulraheem MI; Department of Electrical Engineering, Henan Agricultural University, Zhengzhou, China.; Henan International Joint Laboratory of Laser Technology in Agriculture Sciences, Zhengzhou, China.; State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China.; Department of Agricultural Science Education, Oyo State College of Education, Lanlate, Nigeria., Birech Z; Department of Physics, University of Nairobi, Nairobi, Kenya., Li L; Department of Electrical Engineering, Henan Agricultural University, Zhengzhou, China.; Henan International Joint Laboratory of Laser Technology in Agriculture Sciences, Zhengzhou, China.; State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China., Li C; Department of Electrical Engineering, Henan Agricultural University, Zhengzhou, China.; Henan International Joint Laboratory of Laser Technology in Agriculture Sciences, Zhengzhou, China.; State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China., Wei W; Department of Electrical Engineering, Henan Agricultural University, Zhengzhou, China.; Henan International Joint Laboratory of Laser Technology in Agriculture Sciences, Zhengzhou, China.; State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China.
Jazyk:	angličtina
Zdroj:	Frontiers in plant science [Front Plant Sci] 2022 Jan 12; Vol. 12, pp. 810214. Date of Electronic Publication: 2022 Jan 12 (Print Publication: 2021).
DOI:	10.3389/fpls.2021.810214
Abstrakt:	Nitrate nitrogen ( NO 3 - -N) in the soil is one of the important nutrients for growing crops. During the period of precipitation or irrigation, an excessive NO 3 - -N readily causes its leaching or runoff from the soil surface to rivers due to inaccurate fertilization and water management, leading to non-point source pollution. In general, the measurement of the NO 3 - -N relies upon the laboratory-based absorbance, which is often time-consuming, therefore not suitable for the rapid measurements in the field directly. Ion-selective electrodes (ISEs) support the possibility of NO 3 - -N measurement by measuring the nitrate ( NO 3 - ) ions in soil quickly and accurately due to the high water solubility and mobility of NO 3 - ions. However, such a method suffers from a complicated calibration to remove the influences caused by both temperature and other ions in the measured solution, thus limiting field use. In this study, a kind of all-solid ISE system combined with a temperature sensor and a pH electrode is proposed to automatically measure the concentrations of the NO 3 - -N. In this study, a soil water content calibration function was established, which significantly reduces a relative error (RE) by 13.09%. The experimental results showed that the stabilization time of this electrode system was less than 15 s with a slope of -51.63 mV/decade in the linear range of 10 -5 -10 -2.2 mol/L. Both the limit of detection of 0.5 ppm of the NO 3 - -N and a relative SD of less than 3% were obtained together with the recovery rate of 90-110%. Compared with the UV-Vis spectroscopy method, a correlation coefficient ( R 2 ) of 0.9952 was obtained. The performances of this all-solid ISE system are satisfied for measuring the NO 3 - -N in the field. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2022 Su, Wu, Hu, Ma, Ahmed, Zhang, Abdulraheem, Birech, Li, Li and Wei.)
Databáze:	MEDLINE
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