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Determination of Butylated Hydroxyanisole by Briggs‐Rauscher Oscillating Reaction Catalyzed by a Macrocyclic Nickel (II) Complex
Author(s) -
Hu Juanjuan,
Hu Gang,
Song Jimei,
Fang Zhaohui,
Shen Xiaofeng,
Hu Lin
Publication year - 2016
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.201600037
Subject(s) - chemistry , butylated hydroxyanisole , briggs–rauscher reaction , catalysis , nickel , detection limit , analytical chemistry (journal) , medicinal chemistry , chromatography , organic chemistry , antioxidant
A novel analytical approach for quantitative measurement of butylated hydroxyanisole (BHA) is dis‐ cussed in this paper. Such a method depends on the inhibitory effect of BHA on a Briggs‐Rauscher (B‐R) oscillating reaction. Unlike the classical B‐R system which involves Mn 2+ as the catalyst, such a B‐R sys‐ tem is catalyzed by a macrocyclic nickel (II) complex [NiL](ClO 4 ) 2 , where L in the complex is an unsatu‐ rated ligand 5,7,7,12,14,14‐hexemethyl‐1,4,8,11‐tetraazacyclotetradeca‐4,11‐diene. By perturbation of BHA on the system, the oscillation was inhibited in the presence trace amounts of BHA and the inhibition time was found to be proportional to the concentration of BHA over the range 1.00×10 −7 –1.20×10 −4 mol/L. Two calibration curves were obtained: the first linear regression is over the range of 1.00×10 −7 –2.00×10 −6 mol/L, and the second linear regression is over the range between 2.00×10 −6 and 1.20×10 −4 mol/L, with a lowest limit of detection of 4.00×10 −8 mol/L. UV spectra measurements were employed to clarify the possible perturbation mechanism caused by BHA on the B‐R oscillating reaction.