This method is used for the determination of benzidine and 3,3'-dichlorobenzidine. The sample is collected on a glass filter, desorbed with 0.17% (v/v) triethylaminine in methanol, and then analyzed by HPLC and UV detection. The working range is 4 to 200 mg/m³ for a 50 L air sample. NOTE: This combines and replaces P&CAM 243 and P&CAM 246.
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.
| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | 12 days at 23 °C (11 days at -15 °C for benzidine) |
| Preservatives: | Dry Ice |
| Required Preps: | 13-mm Glass fiber filter |
| Collection Method: | Filter: 20 L- 100 L @ 0.2 L/min. |
| Analytical Methodology: | HPLU, UV detection |
| Documentation: | 
5509
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| 3,3'-Dichlorobenzidine | C12H10Cl2N2 |
91-94-1 |
0.05 |
µg |
| Benzidine | C12H12N2 |
92-87-5 |
0.05 |
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.