A portable and low-cost parallel-plate capacitor sensor for alkali and heavy metal ions detection

A portable and low-cost design of parallel-plate capacitor sensor is proposed and investigated for detection of heavy and alkali metal ions concentration in liquid solution. The application of a thin and long-sided parallel PCB plate allows one to measure the dielectric response of each sample throu...

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Main Authors: Septia Kholimatussadiah, Tri Anggono Prijo
Format: Article
Language:English
Published: World Scientific Publishing 2018-08-01
Series:Journal of Advanced Dielectrics
Subjects:
Online Access:http://www.worldscientific.com/doi/pdf/10.1142/S2010135X18500261
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author Septia Kholimatussadiah
Tri Anggono Prijo
author_facet Septia Kholimatussadiah
Tri Anggono Prijo
author_sort Septia Kholimatussadiah
collection DOAJ
description A portable and low-cost design of parallel-plate capacitor sensor is proposed and investigated for detection of heavy and alkali metal ions concentration in liquid solution. The application of a thin and long-sided parallel PCB plate allows one to measure the dielectric response of each sample through capacitive sensing technique. The measurements were based on the peak output voltage corresponding to the capacitance of the output measured by an oscilloscope with metal ions concentration of the solution varying from 0 to 10ppm and input frequency ranging from 1kHz to 10MHz. The ICF of Li, Na and K in chloride solution was 2.4, 2.1 and 1.9MHz, respectively. The ICF of Na and K in hydroxide solution was 1.5MHz and 1.1MHz, respectively, while the ICF of Pb(NO3)2 was 490kHz. The detected ICF was applied to further construct the portable sensor system, which is simple in design, low-cost in fabrication and easy to operate. The finding of ICF of each chemical element is necessary to solve the selectivity challenge of the capacitance-based sensor, which will be appropriate for chemical, environmental and engineering applications.
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spelling doaj.art-8eb33bbd433f4fdeaf352796431825392022-12-22T01:06:03ZengWorld Scientific PublishingJournal of Advanced Dielectrics2010-135X2010-13682018-08-01841850026-11850026-710.1142/S2010135X1850026110.1142/S2010135X18500261A portable and low-cost parallel-plate capacitor sensor for alkali and heavy metal ions detectionSeptia Kholimatussadiah0Tri Anggono Prijo1Department of Physics, Faculty of Science and Technology, Universitas Airlangga, Surabaya, IndonesiaDepartment of Physics, Faculty of Science and Technology, Universitas Airlangga, Surabaya, IndonesiaA portable and low-cost design of parallel-plate capacitor sensor is proposed and investigated for detection of heavy and alkali metal ions concentration in liquid solution. The application of a thin and long-sided parallel PCB plate allows one to measure the dielectric response of each sample through capacitive sensing technique. The measurements were based on the peak output voltage corresponding to the capacitance of the output measured by an oscilloscope with metal ions concentration of the solution varying from 0 to 10ppm and input frequency ranging from 1kHz to 10MHz. The ICF of Li, Na and K in chloride solution was 2.4, 2.1 and 1.9MHz, respectively. The ICF of Na and K in hydroxide solution was 1.5MHz and 1.1MHz, respectively, while the ICF of Pb(NO3)2 was 490kHz. The detected ICF was applied to further construct the portable sensor system, which is simple in design, low-cost in fabrication and easy to operate. The finding of ICF of each chemical element is necessary to solve the selectivity challenge of the capacitance-based sensor, which will be appropriate for chemical, environmental and engineering applications.http://www.worldscientific.com/doi/pdf/10.1142/S2010135X18500261Capacitive sensingcapacitor sensorcharacteristic frequencymetal ions detectionparallel-plate capacitor
spellingShingle Septia Kholimatussadiah
Tri Anggono Prijo
A portable and low-cost parallel-plate capacitor sensor for alkali and heavy metal ions detection
Journal of Advanced Dielectrics
Capacitive sensing
capacitor sensor
characteristic frequency
metal ions detection
parallel-plate capacitor
title A portable and low-cost parallel-plate capacitor sensor for alkali and heavy metal ions detection
title_full A portable and low-cost parallel-plate capacitor sensor for alkali and heavy metal ions detection
title_fullStr A portable and low-cost parallel-plate capacitor sensor for alkali and heavy metal ions detection
title_full_unstemmed A portable and low-cost parallel-plate capacitor sensor for alkali and heavy metal ions detection
title_short A portable and low-cost parallel-plate capacitor sensor for alkali and heavy metal ions detection
title_sort portable and low cost parallel plate capacitor sensor for alkali and heavy metal ions detection
topic Capacitive sensing
capacitor sensor
characteristic frequency
metal ions detection
parallel-plate capacitor
url http://www.worldscientific.com/doi/pdf/10.1142/S2010135X18500261
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