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Soil Calcium and pH Monitoring Sensor System

Lemos, Sherlan G ; Nogueira, Ana Rita A ; Torre-Neto, André ; Parra, Aleix ; Alonso, Julian

Journal of agricultural and food chemistry, 2007-06, Vol.55 (12), p.4658-4663 [Periódico revisado por pares]

Washington, DC: American Chemical Society

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Título:
Soil Calcium and pH Monitoring Sensor System
Autor: Lemos, Sherlan G ; Nogueira, Ana Rita A ; Torre-Neto, André ; Parra, Aleix ; Alonso, Julian
Assuntos: Biological and medical sciences ; buffering capacity ; calcium ; Calcium - analysis ; Calibration ; Food industries ; Fundamental and applied biological sciences. Psychology ; Hydrogen-Ion Concentration ; Kinetics ; mineral content ; monitoring ; Potentiometry ; sensors ; Soil - analysis ; soil chemical properties ; soil depth ; soil fertility ; soil pH ; soil temperature ; soil water content ; Temperature ; Water - analysis
É parte de: Journal of agricultural and food chemistry, 2007-06, Vol.55 (12), p.4658-4663
Notas: http://dx.doi.org/10.1021/jf063746a S0021-8561(06)03746-0
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Descrição: An agrarian sensorial system based on temperature, moisture, and all solid-state ion-selective potentiometric sensors was developed with the objective of monitoring the behavior of H+ and Ca2+ ions in soil and in real conditions, contributing with a new tool that tries to complement the current precision agriculture technology. The evaluation of the sensorial system to pH monitoring presented a good correlation between the results obtained by the system and the standard methodology, allowing us to notice the soil buffer capacity at different soil depths. With regard to calcium, the sensor system also presented an agreement between its results and those obtained by flame atomic absorption spectrometry, using a calibration model based on multiple linear regressions that allows the correct determination of Ca2+ concentrations in soil depths where the relative moisture is different. In this way, using well-known potentiometric sensors in a complex, discontinued, and heterogeneous matrix, such as soil, the sensorial system proved to be a useful task for agrochemical field applications. Keywords: pH; calcium; in situ soil analysis; potentiometric sensor; precision agriculture
Editor: Washington, DC: American Chemical Society
Idioma: Inglês

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Soil Calcium and pH Monitoring Sensor System

Lemos, Sherlan G ; Nogueira, Ana Rita A ; Torre-Neto, André ; Parra, Aleix ; Alonso, Julian

Washington, DC: American Chemical Society

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