Determination of Micro 2,4-Dinitrotoluene in Wastewater by Kinetic Spectrophotometry
- VernacularTitle:废水中微量2,4-二硝基甲苯的动力学光度测定法
- Author:
Ningsheng CHEN
;
Xinyuan GUO
;
Moxin YU
- Publication Type:Journal Article
- Keywords:
Laboratory techniques and prcedures;
Sewage;
Dinitrobenzenes;
Kinetic spectropllotometry
- From:
Journal of Environment and Health
1992;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish an easy, rapid and sensitive method for determination of micro 2,4-dinitrotoluene in waste water. Methods Based on the fact that micro 2,4-dinitrotoluene could inhibit the discoloring oxidation reaction of methylene blue by KIO4 in the HC1 solution, micro 2,4-dinitrotoluene was determined using kinetic spectrophotometric method. Results A new kinetic spectrophotometric method for determination of micro 2,4-dinitrotoluene was established. The linear range of the method was 0.20?10~(-5)-1.8?10~(-5) mg/L, the detection limit was 1.7xlO'7 mg/L. When the method was applied to the determination of the 2,4-dinitrotoluene in waste water, its recovery rates in standard addition method were 95.6%-99.1% and the RSDs were 1.5%-2.6%. Conclusion The method was easier to operate and more rapid, which was suitable for the determination of micro 2,4-dinitrtoluene in wastewater.
