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制备NO_x气敏电极的专利国外早已报导,并用于环境大气中NO_x、污水和海水中硝酸盐等的测定。国内尚未见报导。我们利用自行研制的氨气敏电极改装成NO_x气敏电极,本文报导用该电极进行实验探讨及其初步应用的结果。实验 (一)主要试剂和仪器 1.NO_2~-标准溶液:称取干燥的NaNO_21.500克溶于1000ml水中,得1000ppmNO_2~-标准溶液。其他标准溶液由此稀释而成。
Patents for preparing NO_x gas sensing electrodes have already been reported abroad and used for determination of NO_x, sewage and seawater nitrates in the atmospheric environment. Not yet reported in China. We use self-developed ammonia gas sensing electrode converted into NO_x gas sensing electrode, this paper reports the experimental study of the electrode and the results of its initial application. Experiment (A) of the main reagents and equipment 1.NO_2 ~ - standard solution: Weigh dry NaNO_21.500 grams dissolved in 1000ml of water, 1000ppmNO_2 ~ - standard solution. The other standard solution is thus diluted.