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Published on: April 26, 2016
Kinetic fluorimetric measurement of trace resorcinol in phenol mixtures
Jing Fan1, Tao Zhang, Jianhui Sun
1School of Chemical and Environmental Science, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang, 453007 Henan, People's Republic of China. fanjing@henannu.edu.cn
Abstract:
A kinetic spectrofluorimetric method was studied to measure the concentration of trace resorcinol. The proposed method is based on the inhibitory effect of resorcinol on the oxidation of rhodamine B by potassium bromate in the medium of dilute sulfuric acid. The detection limit and linear range of the proposed resorcinol measurement method are 12 microg L(-1) and 24 approximately 280 microg L(-1), respectively. Relative standard derivations of eleven measurements for 80 microg L(-1) and 200 microg L(-1) resorcinol solutions are 2.12% and 1.08%, respectively. The trace of resorcinol can be determined directly by the proposed method without any pre-separation process when phenol and many other phenolic compounds are present.
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