A New Method For the Determination of Aniline by Polarography and the Studies of Its Mechanism

Abstract

Abstract: Anew method was developed for the determination of aniline in waste water.Aniline can react with sodium nitrite in the acid medium.Its diazonium products can react continually with sodlum sulfite and formaldehyde.The last reaction products can reduce at the mercury electrode with a sensitive adsorptive wave (E_p=-O.72 V, vs.SCE).The concentration of aniline is linear with peak current in the range of 1.00×10^－7 ～ 5.00× 10^－4mol/L.The detection limit is 5.00×10^-8 mol/L.The behaviour of polarographic wave was studied and the mechanism of electrode reaction was explored.

Key words: Aniline, Diazonium, Polarographic analysis

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WEI Jin-Bao, WANG Yu-Bin, TANG Zhi-Yong, XIAO Mei, ZHANG Lin. A New Method For the Determination of Aniline by Polarography and the Studies of Its Mechanism[J]. Chem. J. Chinese Universities, 1997, 18(3): 388.

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A New Method For the Determination of Aniline by Polarography and the Studies of Its Mechanism

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