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A chemiluminescence method to detect hydroquinone with water‐soluble sulphonato‐(salen)manganese(III) complex as catalyst
Author(s) -
Zhang Guangbin,
Tang Yuhai,
Sun Yang,
Yu Hua,
Du Wei,
Fu Qiang
Publication year - 2016
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2945
Subject(s) - chemiluminescence , hydroquinone , hydrogen peroxide , luminol , chemistry , detection limit , manganese , catalysis , linear range , photochemistry , peroxide , inorganic chemistry , nuclear chemistry , chromatography , organic chemistry
Abstract A water‐soluble sulphonato‐(salen)manganese(III) complex with excellent catalytic properties was synthesized and demonstrated to greatly enhance the chemiluminescence signal of the hydrogen peroxide − luminol reaction. Coupled with flow‐injection technique, a simple and sensitive chemiluminescence method was first developed to detect hydroquinone based on the chemiluminescence system of the hydrogen peroxide–luminol–sulphonato‐(salen)manganese(III) complex. Under optimal conditions, the assay exhibited a wide linear range from 0.1 to 10 ng mL –1 with a detection limit of 0.05 ng mL –1 for hydroquinone. The method was applied successfully to detect hydroquinone in tap‐water and mineral‐water, with a sampling frequency of 120 times per hour. The relative standard deviation for determination of hydroquinone was less than 5.6%, and the recoveries ranged from 96.8 to 103.0%. The ultraviolet spectra, chemiluminescence spectra, and the reaction kinetics for the peroxide–luminol–sulphonato‐(salen)manganese(III) complex system were employed to study the possible chemiluminescence mechanism. The proposed chemiluminescence analysis technique is rapid and sensitive, with low cost, and could be easily extended and applied to other compounds. Copyright © 2015 John Wiley & Sons, Ltd.