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KMID : 1059519890330040388
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Journal of the Korean Chemical Society
1989 Volume.33 No. 4 p.388 ~ p.398
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Gas-Sensing Membrane Electrodes for the Determination of Dissolved Gases (I). Continuous-Automated Determination of Nitrite Ion Using Tubular PVC Membrane Type of pH Electrode
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Lee Heung-Lark
Yun Jong-Hoon
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Abstract
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A continuous-automated method for the determination of nitrite ion using gas-sensing membrane electrode was developed. The pH electrode of tubular PVC membrane type was used as a detector of this system. The slope of linear response of the electrode measured at optimum conditions for the continuous-automated determination of nitrite ion was 63.5 mV/decade. The concentration range of linear response and detection limit were 2.5 × 10-4 ∼ 7.5 × 10-2M and 8.0 × 10-5M, respectively. This detection system was not only less interfering to acidic gas species than other methods but also less time consumable for determination.
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