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A New Voltammetric Sensor for Hydrazine Based on Michael Addition Reaction Using 1‐Amino‐2‐naphtol‐4‐sulfonic Acid
Author(s) -
Ojani Reza,
Rahemi Vanoushe,
Raoof JahanBakhsh
Publication year - 2015
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201300551
Subject(s) - chemistry , hydrazine (antidepressant) , chronoamperometry , detection limit , cyclic voltammetry , sulfonic acid , diffusion , electrochemistry , inorganic chemistry , nuclear chemistry , electrode , analytical chemistry (journal) , organic chemistry , chromatography , physics , thermodynamics
In this paper, voltammetric determination of hydrazine was investigated by 1‐amino‐2‐naphtol‐4‐sulfonic acid (ANSA) at the surface of carbon paste electrode (CPE) using cyclic voltammetry (CV) and double potential step chronoamperometry. Results showed that in pH 7.00, hydrazine participates in Michael addition reaction with ANSA and the anodic peak potential of hydrazine shifted to 726 mV less positive than CPE in absence of ANSA, this value is unique compared with other research works. Also, the value of rate constant for the oxidation of hydrazine was calculated 8.3 × 10 4 cm 3 mol ‐1 s ‐1 and the diffusion coefficient of ANSA at the surface of CPE was determined 7.3 × 10 ‐7 cm 2 s ‐1 . A linear correlation between Ip and hydrazine concentration in the ranges, from 5 × 10 ‐5 mol/L to 2.5 × 10 ‐2 mol/L with CV method was obtained and the detection limit was found as 4.3 × 10 ‐5 mol/L.