Determination of hydrazine hydrate based on electrochemiluminescence of Ru(bpy)
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Authors: | Fengyu Liu Wei Li Fusheng Li Shiguo Sun |
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Institution: | 1. School of Chemistry, Dalian University of Technology, 2 Linggong Road, Ganjingzi District, Dalian, 116023, China 2. State Key Laboratory of Fine Chemicals, E 224 West Campus, 2 Linggong Road, Dalian, 116012, China
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Abstract: | Considering of the basic properties and also the two nitrogen atoms in the structure, hydrazine hydrate was employed to be an amine additive candidate, to build a Ru(bpy) 3 2+ /hydrazine electrochemiluminescence (ECL) system, and ECL of Ru(bpy) 3 2+ has been employed for the determination of hydrazine hydrate in the paper. The result demonstrated that the logarithmic ECL increasing (ΔECL?=?ECLafter addition of hydrazine???ECLbefore addition of hydrazine) versus the logarithmic concentration of hydrazine hydrate is linear over a concentration range of 1.0?×?10?9 to 1.0?×?10?5?mol/L, on both glassy carbon and Pt electrodes in a pH 9 phosphate buffer. The hydrazine hydrate detection limit was down to 1.0?×?10?9?mol/L, comparatively lower than other detection methods. To check its applicability, the proposed method was applied to the determination of hydrazine hydrate added into a tap water sample with good reproducibility and stability. All these provide a possibility to develop a novel ECL detection method for hydrazine in water. |
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