This method describes the sample collection and analysis of n-isopropylamine and diphenylamine. Samples are collected closed-face by drawing known volumes of air through sampling devices consisting of three-piece cassettes, each containing two sulfuric acid-treated glass fiber filters separated by a spacer. Analysis is performed by extracting the filters with methyl alcohol and analyzing the free amines by high-performance liquid chromatography using an ultraviolet detector. Diphenylamine samples should be refrigerated until analyzed to help minimize loss of analyte during storage.
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: | At least 15 days. |
| Preservatives: | Diphenylamine samples should be refrigerated until analyzed to help minimize loss of analyte during storage. |
| Required Preps: | Two sulfuric-acid treated 37-mm Gelman type A/E glass fiber filters contained in a three-piece cassette. |
| Collection Method: | Treated glass fiber filter: 100 L at 1 L/min. |
| Analytical Methodology: | HPLC/UV. |
| Documentation: | 
078
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Diphenylamine | C12H11N |
122-39-4 |
1 |
µg |
| N-Isopropylaniline | C9H13N |
768-52-5 |
1 |
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.