Use of Dielectric Spectroscopy for the Study of Concentration of Glyphosate in Distilled Water
Keywords:dielectric spectroscopy, glyphosate, interdigital capacitor, microwave, sensor, water
In this paper, the capability of sensing low concentrations of glyphosate in water of two interdigital capacitive transducers are analyzed using numerical simulations and measurements. Each microwave sensor is analyzed using the surface electric field produced at the resonance frequency. In addition, the reflection coefficient of each transducer submerged in water with glyphosate is measured and compared with distilled water. Prepared samples with concentrations of 1ppm/L (1 part per million over a liter of distilled water) are used for the experimental tests.
K. Kupner, Electromagnetic Aquametry. Belin: Springer, 2005.
O. Korostynska, A. Mason, and A. I. Al-Shamma’a, “Flexible microwave sensors for real-time analysis of water contaminants,” J. of Electromag. Waves and Applications, vol. 27, no. 16, pp. 20752089, 2013. DOI: 10.1080/09205071.2013.832393
L. Mamy, B. Gabrielle, and E. Barriuso, “Comparative environmental impacts of glyphosate and conventional herbicides when used with glyphosate-tolerant and non-tolerant crops,” Environmental Pollution, vol. 158, no. 10, pp. 3172-3178, 2010.