This method is for the collection and analysis of hydrazine from workplace air. The sample is collected on 3-piece cassette containing two sulfuric acid treated glass fiber filters. After collection, the filters are extracted with a buffered ETA disodium solution, derivitized with a benzaldehyde solution to form benzalazine which is anlayzed by HPLC with a UV detector.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | The recovery of the analyte remained above 78% when spiked at 10ppb and aobve 96% when spiked at 1ppm when kept at ambient temperatures. |
| Preservatives: | Store samples at ambient or refrigerated temperatures. |
| Required Preps: | Two sulfuric acid treated 37-mm glass fiber filters (SKC 225-9012) |
| Collection Method: | The method recommends a 1.0 L/min. flow rate with a 240L sample collection volume. |
| Analytical Methodology: | HPLC/UV |
| Documentation: | 
108
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Hydrazine | H4N2 |
302-01-2 |
18.3 |
ng |
* 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.