Method 2002

Aromatic Amines


This method is for the determination of aromatic amines.  The sample is collected on a silica gel tube.  After collection the sample is desorbed with 95% ethanol and then analyzed by GC/FID (flame ionization detector).  The method states that use of a nitrogen-specific GC detector instead of an FID will greatly increase sensitivity.

Silica gel has reduced capacity for organic compounds at high humidity.

NOTE: This method combines NIOSH Methods S162 (xylidine), S164 (dimethylaniline), S168 (o-toluidine), S310 (aniline), P&CAM 280 (N,N-dimethyl-p-toluidine), and P&CAM 168 (aromatic amines).


(NIOSH Issue 2: 15 August 1994)

Request-A-Quote

No Obligation Quotation for Analytical Services

If you would like us to provide a quote for laboratory analysis, just provide us with as much information as you can about your project (the more, the better) and we'll provide you a quote via email. As you are searching or browsing our Analytical Guide, you'll see the Request-A-Quote icon... just click on it to start the request process.
Request-A-Quote

Method Data

Hold Times, Preservatives, Preps, Collection, Analytical & Documentation
Holding Time:   Aniline, o-toluidine and 2,4-xylidine are stable for at least 7 days from sampling to analysis. Stability data is not noted in the method for N,N-dimethyl-p-toluidine and N,N-dimethylanailine.
Preservatives:   None specified in the method.
Required Preps:   Silica gel tube, 150 mg/75 mg (SKC 226-10)
Collection Method:   Minimum and maximum collection volumes and flow rates vary by analyte. Refer to Table 3 in the method for the appropriate volumes and rates.
Analytical Methodology:   GC/FID
Documentation:   2002

Analyte List*

Analyte Formula CAS Number Detection Limit
Dimethylaniline
C8H11N
121-69-7
0.01
 mg
Aniline
C6H7N
62-53-3
0.01
 mg
o-Toluidine
C7H9N
95-53-4
0.01
 mg
2,4-Dimethylaniline
C8H11N
95-68-1
0.01
 mg
N,N-Dimethyl-p-toluidine
C9H13N
99-97-8
0.01
 mg

* 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.