Method 6010 is for the collection and analysis of hydrogen cyanide. The sample is collected on a soda lime sorbent tube. After collection, the sample is desorbed in 10mL of deionized wate and analyzed by visible absorption spectrophotometry.
The working range of the method is 0.3 to 235 ppm (3 to 260 mg/m³) for a 3-L air sample. Particulate cyanides are trapped by the initial glass fiber membrane disk. This method is more sensitive and subject to fewer interferences than NIOSH Method 7904 which uses an ion specific electrode for analysis.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | Samples are stable for at least 2 weeks if kept at 25°C. |
| Preservatives: | Store samples at 25°C. |
| Required Preps: | Soda lime tube, 200/600mg (SKC 226-28) |
| Collection Method: | The method recommends a 0.05 - 0.1 L/min. flow rate and a 2 - 90L sample collection volume. |
| Analytical Methodology: | Visible absorption spectrophotometry |
| Documentation: | 
6010
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Hydrogen cyanide | HCN |
74-90-8 |
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.