2009•Journal of environmental healthRequires access
Determination of Trace Catechol in Waste Water by Kinetic Fluorimetry
Chen Lan-hu
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Abstract
Objective To establish a new kinetic fluorimetry method for the determination of trace catechol in waste water. Methods Trace catechol inhibited the catalytic oxidation of pyronine Y by potassium periodate in the presence of vanadium(the catalyst) in H2SO4 medium. A linear relation appeared between the concentration of catachol and the changing of catalyzed reaction speed. A new inhibitory kinetic fluorimetry method for the determination of trace catechol in waste water was established. Results The linear range of determination was 10.0-1 500.0 μg/L,and the detection limit was 7.8 μg/L. The RSDs and recovery rates of the method were 2.42%-2.71%,and 98.3%-103.3% respectively. Conclusion This method is simple and sensitive for the determination of trace catechol in waste water with satisfactory results.