Studies on Polarographic Adsorption Wave of Mn(Ⅱ)-PAR Complex and Its Analytical Application

Abstract

Abstract: In Na₂B4O₇(0.08 mol/L)-NaOHmedium at pH12.5, the complex compound of Mn (Ⅱ)-4-(2-pyridyazo)-resorcinol (PAR) gives a sensitive polarographic adsorption wave with relation to the concentration of Mn(Ⅱ) at -0.94 V(vs.SCE) in single-sweep oscillopolarograph, on the basis of which a new sensitive method for the determination of manganese by this polarographic adsorptive wave is established.There is a good linear relationship between the peak height of this wave and the concentration of Mn(Ⅱ) in the range of 4.0×10^-8 ~ 5.2×10^-6 mol/Land the detection limit is 1.0×10^-8 mol Mn(Ⅱ)/L.

Key words: Manganese, 4-(2-Pyridylazo)-resorcinol(PAR), Polarographic adsorption wave

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CAI Qian-tao, SHI Wen-zhao, LI Ao, LUO Xiao-Ian, WU Ming-jian . Studies on Polarographic Adsorption Wave of Mn(Ⅱ)-PAR Complex and Its Analytical Application[J]. Chem. J. Chinese Universities, 1992, 13(1): 42.

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Studies on Polarographic Adsorption Wave of Mn(Ⅱ)-PAR Complex and Its Analytical Application

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