A new electrochemical analyser for nitric oxide and nitrogen dioxide

Amperometric NO gas sensor in the presence of diffusion barrier: selectivity, mass transfer of NO and effect of temperature

“…The relationship of the bulk diffusivity and the temperature can be expressed as [23] ðD NO Þ b / T 3=2 (9) and the Knudsen diffusivity is proportional to T 1/2 [23]. According to Eq.…”

“…6 is caused by the oxidation of NO 2 on the working electrode. The interference from the presence of NO 2 can be reduced by passing inlet gas through triethanolamine to adsorb NO 2 before the gas flows into the NO gas sensor [9].…”

“…The experimental results reveal that the electrochemical activity is affected by the presence of SO 2 . The interference from the presence of SO 2 can be reduced by the adsorption of SO 2 for passing inlet of gas through mercuric salts before the gas flows into the NO gas sensor [9].…”

“…Hence, it is very important for the environmental conservation to monitor the level of nitric oxide in the atmosphere. The chemiluminescene method [1] and electrochemical sensors [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] can monitor the concentration of nitric oxide in the gas phase.…”

“…Three types of electrochemical methods are used to monitor the concentration of nitric oxide: the conductimetric [2,3,15], potentiometric [4,15] and amperometric [5][6][7][8][9][10][11][12][13][14][15][16][17] gas sensors. Au/solid polymer electrolyte (Au/SPE) prepared by the chemical plating method is used as a working electrode for assembling the amperometric nitric oxide gas sensor [16].…”