Inhibitory Kinetic-Spectrophotometric Determination of Trace o-dinitrobenzene
- VernacularTitle:阻抑动力学光度法测定痕量邻二硝基苯
- Author:
Qinwe LIU
;
Guoshu CHEN
- Publication Type:Journal Article
- From:
Chinese Journal of Analytical Chemistry
2001;29(3):258-261
- CountryChina
- Language:Chinese
-
Abstract:
In HCl medium,trace o-dinitrobenzene can sensitively inhibit the discoloration reaction of neutral red oxidized by KIO4. The optimum neagent is 0.55 mL neutral red, 0.60 mL HCl, 0.6 mL KIO4, respectively. The neaction ttmperatune is 80℃， neaction time is 6 min. The optimum condition and kinetic parameters are investigated in detail,a new method for determination of trace o-dinitrobenzene is proposed. The detection limit is 7.7×10-7 g/L and the linear range is 0.0～4.0 μg/L o-dinitrobenzene. It has been applied to the determination of trace o-dinitrobenzene in environmental water sample with satisfactory results.
