Fukao Yuko, Kitazumi Yuki, Kano Kenji, Shirai Osamu
Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University.
Anal Sci. 2018 Dec 10;34(12):1373-1377. doi: 10.2116/analsci.18P333. Epub 2018 Aug 24.
A liquid-membrane type nitrate-selective electrode was constructed, in which the responding membrane contained polyvinylchloride, o-nitrophenyloctylether and tetraheptylammonium nitrate. The NO-selective electrode displayed a linear response to the concentration of NO with a Nernstian slope of -53.3 ± 1.0 mV decade, in the 10 - 10 mol dm (M) NO concentration range. The NO detection limit was about 10 M. The electrochemical response of this electrode was stable for more than 30 days. Measurements performed using the NO-sensor indicated that in the presence of green plants, the concentration of NO in a hydroponic solution decreased from 0.20 to 0.05 mM over a three-day period.
构建了一种液膜型硝酸盐选择性电极，其响应膜包含聚氯乙烯、邻硝基苯基辛基醚和硝酸四庚基铵。该NO选择性电极在10⁻¹⁰至10⁻⁶mol dm⁻³（M）的NO浓度范围内，对NO浓度呈现线性响应，能斯特斜率为-53.3±1.0 mV/十倍浓度变化。NO检测限约为10⁻¹¹M。该电极的电化学响应稳定超过30天。使用NO传感器进行的测量表明，在绿色植物存在的情况下，水培溶液中NO的浓度在三天内从0.20 mM降至0.05 mM。
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