Analytical method for the determination of dinitrotoluenes
Translation of DGUV Information 213-560 (former BGI 505-60 or ZH1/120.60)
| Chemical name | IUPAC name | CAS Number |
|---|---|---|
| 2,3-Dinitrotoluene | 1-Methyl-2,3-dinitrobenzene | 602-01-7 |
| 2,4-Dinitrotoluene | 1-Methyl-2,4-dinitrobenzene | 121-14-2 |
| 2,6-Dinitrotoluene | 1-Methyl-2,6-dinitrobenzene | 606-20-2 |
| 3,4-Dinitrotoluene | 1-Methyl-3,4-dinitrobenzene | 610-39-9 |
| 3,5-Dinitrotoluene | 1-Methyl-3,5-dinitrobenzene | 618-85-9 |
| Dinitrotoluene (technical mixture of isomers) | 25321-14-6 |
Method 01 – GC – limited suitability: category E3
Sampling with a pump and adsorption on Tenax, gas chromatography after desorption.
This method permits the determination of isomeric dinitrotoluenes (DNT) concentrations in working areas averaged over the sampling time after personal or stationary sampling.
Principle
With a pump a measured air volume is drawn through a Tenax tube. The dinitrotoluenes are solids at room temperature. For this reason the definition of inhalable dust fraction must be taken into account during sampling. The adsorbed dinitrotoluenes are desorbed with acetone and determined by gas chromatography.
Limit of quantification (LOQ)
Absolute: 12 pg for each dinitrotoluene isomer.
Relative: 1 µg/m3 of each dinitrotoluene isomer for 60 L air sample, 5 mL desorption solution and 1 µL injection volume.
Issue
February 1996
The measuring method is of limited suitability (E3).
The complete measuring method is available in the Wiley Online Library: Method for the determination of dinitrotoluenes (Analyses of Hazardous Substances in Air, Volume 5, 2002).
You can reach the German-language version of the article with a single click on the flag-symbol.
