This method is for the collection and analysis for monmethylaniline from workplace air. The sample is collected using a midget impinger train. The impingers are filled with 10mLs of 0.05 M sulfuric acid. After collection an aliquot of the impinger solution is neutralized with 4M NaOH and analyzed by GC/FID (flame ionization detector).
The working range of the method is 0.2 to 7 ppm (1 to 30 mg/m3) for a 100L air sample.
NOTE: This method revised Method S153.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | The method says the samples are stable for at least 7 days if kept at 25°C. |
| Preservatives: | Keep samples at 25°C. |
| Required Preps: | 4M NaOH impinger solution. |
| Collection Method: | The method recommends a 0.2 - 1.0 L/min. flow rate with a 11L to 100L sample collection volume. |
| Analytical Methodology: | GC/FID |
| Documentation: | 
3511
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Monomethylaniline | C7H9N |
100-61-8 |
8 |
µg |
* The analytes and detection limits listed for each method represent the typical detection limits and analytes reported for that particular method. Keep in mind that analyte lists may vary from laboratory to laboratory. Detection limits may also vary from lab to lab and are dependent upon the sample size, matrix, and any interferences that may be present in the sample.