Journal of Biosystems Engineering

  • 제28권4호
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  • Pages.335-342
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  • 2003
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  • 1738-1266(pISSN)
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  • 2234-1862(eISSN)
한국농업기계학회 (Korean Society for Agricultural Machinery)
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양액의 영양분 분석을 위한 Strip형 이온선택성전극 센서 의 응용 -NO3 이온 분석 -

Application of a. Strip Ion-Selective Electrode Sensor for Hydroponic Nutrient Solution Analysis - NO3 Analysis -

  • 발행 : 2003.08.01
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초록

A simple disposable thick-film potentiometric strip has been developed and evaluated for hydroponics application. The strip consisted of low ion-selective electrodes (ISE) fabricated by screen-printing technology. The electrochemical responses of ion sensors for nitrate, ammonium, potassium, and magnesium were measured with specially designed 16-channel low voltage signal transducers. The analytical characteristics of the sensors were comparable with those of conventional ISE sensors. The thick-film sensors exhibit linear relationships over five concentration decades. The concentration of N $O_3$ - ion in standard solution can be determined by direct potentiometric measurements without any conditioning before measurements. However, measurement of $K^{+}$, N $H_4$$^{+}$, and $Mg^{2+}$ ionic concentrations in nutrient solutions seems not feasible.

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참고문헌

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피인용 문헌

  1. Determination of Inorganic Phosphate in Paprika Hydroponic Solution using a Laboratory-made Automated Test Stand with Cobalt-based Electrodes vol.36, pp.5, 2011, https://doi.org/10.5307/JBE.2011.36.5.326